Curriculum Vitae (CV) | M.Sc. in Mechatronics Engineering

“Nothing in life is to be feared, it is only to be understood” and “I was taught that the way of progress was neither swift nor easy” Professor Maria Skłodowska-Curie said which is the fact that I have experienced throughout my life. I am ambitious in that challenge myself, push myself to broaden my horizons or achieve a difficult goal. Also being at the interface between Mechanics, Mechatronics and Control is amazing, dealing with a live challenge! I am interested in learning and using mechanics, mathematics, and physics to describe and deal with the natural world and robots. In this regard, I enjoy both computational science and experimental methods. More specifically, my interests include:

  •  Modelling, Integrated/Mechanical Designing, Analysis and Optimization Systems
  •  Control Systems Design, Optimization and Developing Algorithm and Simulation
  •  Nonlinear System Identification, Nonlinear Control and Realtime Process Optimisation
  •  Embedded, Robotics, Autonomous, Mechatronics, Cyber-Physical, Biomedical and Transportation Systems

Furthermore, I benefit from programming experience in Matlab and C++ and experience in prototyping some robotic system. I’m able to work at the intersection of several research domains (mechanical designing, control, mechatronics, aerodynamics, biology and artificial intelligence).

As in my whole life, during my graduate researches, I tried to do my best. Along with some other honors and awards.

Please do not hesitate to contact me if you think either I can help you in a case or we can have a research collaboration.

 

 

Education:

  • M.Sc. in Mechatronics Engineering (2013 - 2016) (EQF level 7)
    K.N. Toosi University of Technology (KNTU), Tehran (Iran)
    • Supervisor: Prof. S. Ali. A. Moosavian
    • Cumulative GPA: 4.0 of 4.0 (32 credits, Top Student)
    • Thesis: Multiple Impedance Control of Hybrid Parallel-Serial Manipulator for Object Manipulation Task
      • Proposing a Hybrid Cable Parallel-Serial Manipulator for Object Manipulation
      • Inverse, Forward Kinematic, Velocity, Acceleration, Workspace, Dynamic Mathematical Modelling and Validation by SimMechanics Virtual Software Model of Hybride System and Cable
      • Redundancy Resolution Algorithm and Reduce Cable Redundancy by Mechanical Novelty
      • Dynamic Modelling, Redundancy Resolution Algorithm, Reduce Cable Redundancy by Mechanical Novelty and Dynamic Modelling of Cable
      • Optimization of Structural Design of a Constraint and Suspended Parallel Robot according to Stiffness, Sensitivity, Singularity, Workspace Volume Analysis by Genetic Algorithm
      • Proposing Algorithm and Implementation of Serial and Parallel Multiple Impedance Control for Object Manipulation, Optimization of Impedance Coefficients to Manage Interaction of Human-Robot Force/Moment
      • Design and Manufacturing of 8 Cable Constraint Parallel Robot, Image Processing (Vision) + IMU for Position/Orientation Feedback, Proposing Algorithm in Shortage of Rotary Winch Sensor, Nonlinear Position Control of Platform

 

  • B.Sc. in Mechanical Engineering (2009 – 2013) (EQF level 6)
    Isfahan University of Technology (IUT), Isfahan (Iran)

 

  • Certificate in Mathematics and Physics (2008 - 2009) (EQF level 4)
    Imam Mohammad Bagher College Preparatory School, Isfahan (Iran)

    • Cumulative GPA: 4.0 of 4.0

 

  • High School Diploma in Mathematics and Physics (2005 - 2008) (EQF level 3)
    Imam Mohammad Bagher High-School, Isfahan (Iran)

    • Cumulative GPA: 4.0 of 4.0

 

 

Work Experiences:

  • Research Assistant (Sep 2014– now)
    Prof. S. Ali A. Moosavian
    Center of Excellence in Robotics and Control, Advanced Robotics and Automated Systems (ARAS) Lab., Tehran (Iran)
    • Modelling and Validation of a Spatial 8 Cable-Driven Parallel Robot Equipped with a 6 DoF Serial Manipulator
    • Implementing Different Control Method on Virtual Dynamic Model for Object Manipulation in Present of External Force
    • Shape Designing and Manufacturing Winch, Frame and Platform by Considering Kinematic and Dynamic Constraint
    • Calibrating Actuator, Providing Sensor and Actuator Connection, and Preparing Hardware in Loop Control System
    • Testing and Implementation Position Control, Modification Control Coefficient and Trajectory Planning and Decision Making in Different Maneuvers
    • Sub-Superviser and Consultor
      • Control of Cable Driven Redundant Parallel Manipulator, Master Thesis, Mohammad Reza Moosavi
      • Optimal Motion Planning for Cable Robots with Uncertain Jacobian, Master Thesis, Masoud Ghanbari
      • Automated Ball Tracking Camera Manipulated by Cable Parallel Robot, Bachelour Project, Nima Arteghzadeh and Maryam Sadat Nabipour

 

  • Research Assistant (Feb 2015 - Nov 2016)
    Dr. Mohammad Danesh
    Department of Mechanical Engineering, Isfahan University of Technology (IUT), Isfahan (Iran)
    • Task 1: Modelling, Designing, Manufacturing and Controlling an Industrial 6 DoF Serial Robotic Arm
      • Kinematic, Dynamic Modeling, Stiffness, Workspace, Dexterity and Manipulability Analysis
      • Design, Finite Element Analysis and Manufacturing Mechanical Parts, Links and Gripper
      • Calibration of DC Motor Actuator, Providing Sensor Connection and Preparing Hardware in Loop Control System by LabVIEW and Matlab
      • PID Control and Modification Control Coefficient in Different Maneuvers
      • Trajectory Planning and Decision Making by Programming a ARM-Controller
    • Task 2: Design and Control Analysis of Cable Parallel Robot Simulator
      • Inverse Kinematic, Dynamic Modelling and Preparing SimMechanics Validation of Spatial 8 Cable-Driven Parallel Robot Equipped with a 6 DoF Serial Manipulator
      • Mechanical Modelling Winch, Frame and Platform by considering Kinematic and Dynamic Model
      • Simulation PD Partial, Feed-Forward, Modern, Feedback Linearization, Robust and Adaptive Control for Object Manipulation and Simulation Maneuvers in Present of Noise and Disturbance

 

 

Teaching Experiences:

 

 

Technical Skills:

Computer Tools:

  • Mathematics Software: MATLAB (Professional), Simulink (Professional), SimMechics & Simscape Multibody, Mathematica (Basic), Minitab (Basic)

  • Mechanical Software: CATIA (Professional at Sketcher, Part Design, Assembly, Drafting), ABAQUS, SolidWorks (Basic), Inventor (Basic)

  • Electrical Software: LabVIEW, Codevision, ePLAN, 20-Sim, Simatic Manager (Basic), Xilinx ISE (Basic)

  • General Software: Latex, Microsoft Office (Word, Excel, PowerPoint), Adobe Photoshop, Camtasia

  • Operating Systems: Windows, MacOS, Linux

Programming:

  • Language: C/C++ (Professional), Python, Ladder logic

  • Controller: AVR (Arduino), FPGA (Basic), PLC (Siemens, Delta and Vigor)

Languages:

  • Native: Persian

  • English: IELTS 6.5 (Listening: C1, Reading: C1, Speaking: C1, Writing: B2)

 

 

Honors & Awards:

  • Paper Sub-Reviewer at the 4th RSI International Conference on Robotics and Mechatronics (ICROM), 2016
  • Research Grants Awarded by Iran's National Elites Foundation (INEF), 2016
  • Awarded member of the Iran's National Elites Foundation (INEF) According to the High Academic Criteria, 2016
  • Top Student of Mechatronics Groups at the Department of Electrical Engineering of K.N. Toosi University of Technology (KNTU), 2016
  • Awarded Creative Contest Scholarships at the Creativity Exhibition of the 3rd International Conference on Robotics and Mechatronics (ICROM), 2015
  • Research Scholarship Awarded by K.N. Toosi University of Technology (KNTU), 2014
  • Ranked 1st in Fast CAD Designing Competition, Isfahan University of Technology, 2013
  • Ranked 2nd in the Regional National Olympiad Skills in Mechatronic filed (Qualification of the International "WorldSkills Competition", Sãu Paulo 2015, Brazil), 2013
  • Ranked 1st among 110 student teams and Innovation Award at Egg Savior Competition of Payame Noor University, 2010
  • B.Sc. Scholarship awarded by Isfahan University of Technology (IUT), 2009
  • Ranked in the first 0.5% of Iranian University Entrance Exam, 2009.

 

 

Publications:

Conference Paper

Journal Paper

 

 

Projects:

Thesis
Multiple Impedance Control of Hybrid Parallel-Serial Manipulator for Object Manipulation Task, (Prof. S. Ali. A. Moosavian)

One of the widely used of industrial robots is object manipulation (OM). Cable driven parallel robot (CDPR) has a very large workspace suitable for this application. However, there are possible cable collisions with the environment. Therefore, use of a Serial Manipulator (SM) recommended penetrating the blind spots. Thus, the combination of CDPR-SM is recommended for OM. The tasks of OM, welding, surface finishing, cleaning, etc. need algorithms capable of determining the interaction force and position control. In addition, constrained and suspended structure of CDPR is evaluated and the best structure for the control and construction is selected.

2016
Joint Space Energy Optimization of Tethered Space Robot for End-Effector Optimal Path, (Dr. Mahdi Keshmiri)

Tethered satellites systems have been studied for several decades from which the concept of tether-connected space manipulators developed. The advantages of such robots derive from the extensive reach that can be provided by the tether. This would benefit applications such as satellite repair and space debris removal. 

2013
Scientific Project
Design and Control Analysis of Cable Parallel Robot Simulator, (Prof. S. Ali A. Moosavian)
  • Task:
    • Inverse Kinematic, Dynamic Modelling and Preparing SimMechanics Validation of Spatial 8 Cable-Driven Parallel Robot Equipped with a 6 DoF Serial Manipulator
    • Mechanical Modelling Winch, Frame and Platform by considering Kinematic and Dynamic Model
    • Simulation PD Partial, Feed-Forward, Modern, Feedback Linearization, Robust and Adaptive Control for Object Manipulation and Simulation Maneuvers in Present of Noise and Disturbance
2015
Modelling, Designing, Manufacturing and Controlling an Industrial 6 DoF Serial Robotic Arm, (Dr. Mohammad Danesh)

Serial Manipulators are the most common industrial robots. They are designed as a series of links connected by motor-actuated joints that extend from a base to an end-effector. Often they have an anthropomorphic arm structure described as having a "shoulder", an "elbow", and a "wrist".

Serial robots usually have six joints, because it requires at least six degrees of freedom to place a manipulated object in an arbitrary position and orientation in the workspace of the robot.

2015
Course Project
Linear, Nonlinear, Robust and Adaptive Control of a 3 DoF Cable Driven Parallel Robots, (Dr. Shahram Azadi)

Dynamic analysis of cable robots is not the same as that of other parallel robots because cables can only pull an object but they cannot push. Therefore, the manipulator is able to perform a task only if the force in all cables are non-negative. Accordingly, the workspace of cable robots is defined as a region in space where the end-effector is able to exert the required wrench (force and moment vectors) to the surroundings while all cables are in tension (non-negative forces). Many research works have focused on workspace analysis and optimization of cable robots. Workspace and controllability of cable robots can be enhanced by adding cables to structure of the robot.

2014
Kinematics and Dynamics of a 4 DoF Cable Driven Parallel Robot

Cable driven robots (called as cable-suspended robots and wire-driven robots as well) are a type of parallel manipulators in which flexible cables are used as actuators. One end of each cable is reeled around a rotor twisted by a motor, and the other end is connected to the end-effector. One famous example of cable robots is SKYCAM which is used to move a suspended camera in stadiums. Cables are much lighter than rigid linkages of a serial or parallel robot, and very long cables can be used without making the mechanism massive. As a result, the end-effector of a cable robot can achieve high accelerations and velocities and work in a very large workspace (e.g.

2015
Kinematics, Dynamics and Control of a 7 DoF Serial Manipulator, (Prof. S. Ali A. Moosavian)

Serial manipulators are the most common industrial robots. They are designed as a series of links connected by motor-actuated joints that extend from a base to an end-effector. Often they have an anthropomorphic arm structure described as having a "shoulder", an "elbow", and a "wrist".

Serial robots usually have six joints, because it requires at least six degrees of freedom to place a manipulated object in an arbitrary position and orientation in the workspace of the robot.

2014
Kinematics, Dynamics and Control of a 6RUS Parallel Robot, (Prof. HamidReza Dokht Taghirad)

A Stewart platform is a type of parallel robot that incorporates six prismatic actuators, commonly hydraulic jacks. These actuators are mounted in pairs to the mechanism's base, crossing over to three mounting points on a top plate. Devices placed on the top plate can be moved in the six degrees of freedom in which it is possible for a freely-suspended body to move. These are the three linear movements x, y, z (lateral, longitudinal and vertical), and the three rotations pitch, roll, & yaw. The term "six-axis" platform is also used.

2014
Modern Control the Airplane Angle, (Prof. Hamid Reza Dokht Taghirad)

In fluid dynamics, angle of attack (AOA, or \alpha (Greek letter alpha)) is the angle between a reference line on a body (often the chord line of an airfoil) and the vector representing the relative motion between the body and the fluid through which it is moving. Angle of attack is the angle between the body's reference line and the oncoming flow. This article focuses on the most common application, the angle of attack of a wing or airfoil moving through air.

2015
Simulation a Stewart Platform in Simulink

A Stewart platform is a type of parallel robot that incorporates six prismatic actuators, commonly hydraulic jacks. These actuators are mounted in pairs to the mechanism's base, crossing over to three mounting points on a top plate. Devices placed on the top plate can be moved in the six degrees of freedom in which it is possible for a freely-suspended body to move. These are the three linear movements x, y, z (lateral, longitudinal and vertical), and the three rotations pitch, roll, & yaw. The term "six-axis" platform is also used.

2014
Fuzzy Temperature Control in a Shower, (Dr. Ali Ghaffari)

This is an implementation of a water temperature and flow controller for use in shower and sinks. The domain of facts considered are flow and temperature and the domain of actions that corresponds to these are control actions to achieve a given goal. A rule base is formed using these facts and control actions. This rule base is evaluated using the actual fuzzified goal computed with the existing conditions. Applicable rules are filed and a conclusion is drawn. The max-prod method is used to scale the conclusion and the mean of maxima method is used for defuzzification. The fuzzy system is able to achieve a specified temperature and flow in most cases.

2014
Double Pendulum Simulation Inverse Double Pendulum with Lack of Operator

In physics and mathematics, in the area of dynamical systems, a double pendulum is a pendulum with another pendulum attached to its end, and is a simple physical system that exhibits rich dynamic behavior with a strong sensitivity to initial conditions. The motion of a double pendulum is governed by a set of coupled ordinary differential equations. For certain energies its motion is chaotic.

2014
Surgical Robot Arm Kinematic and Dynamic Analysis of a Surgical Robot Arm, (Dr. S. Hossein Sadati)

Robotic surgery, computer-assisted surgery, and robotically-assisted surgery are terms for technological developments that use robotic systems to aid in surgical procedures. Robotically-assisted surgery was developed to overcome the limitations of minimally-invasive surgery and to enhance the capabilities of surgeons performing open surgery.

2014
Fuzzy Control Parking Truck-Trailer Fuzzy Control Auto Parking Truck-Trailer in the Presence of Obstacles, (Prof. Ali Ghaffari)

For articulated vehicles met in robotics and transportation fields, even for an experienced operator, backing-up leads usually to jack-knifing. This paper presents a fuzzy logic controller for back-driving a truck-trailer vehicle into a predefined parking task. The truck-trailer link system is equipped with a kingpin sliding mechanism acting as an anti-jackknife excitation input. By applying fuzzy logic control techniques, precise system model is not required. 

2013
Control 3 DOF Robot with 2 Method of Communication

A robot is a mechanical or virtual agent, usually an electro-mechanical machine that is guided by a computer program or electronic circuitry. Robots can be autonomous or semi-autonomous and range from humanoids such as Honda's Advanced Step in Innovative Mobility (ASIMO) and Tosy's TOSY Ping Pong Playing Robot (TOPIO) to industrial robots, collectively programmed 'swarm' robots, and even microscopic nano robots. By mimicking a lifelike appearance or automating movements, a robot may convey a sense of intelligence or thought of its own.

2013
Hydraulic Circuit and Control System Design for Ring Rolling Machine

Ring rolling is a specialized type of hot rolling that increases the diameter of a ring. The starting material is a thick-walled ring. This workpiece is placed between two rolls an idler roll, while another roll, called the driven roll, presses the ring from the outside. As the rolling occurs the wall thickness decreases as the diameter increases. The rolls may be shaped to form various cross-sectional shapes. The resulting grain structure is circumferential, which gives better mechanical properties. Diameters can be as large as 8 m (26 ft) and face heights as tall as 2 m (79 in).

2013
Control System Design for Nonlinear Inverted Pendulum System

An inverted pendulum is a pendulum which has its center of mass above its pivot point. It is often implemented with the pivot point mounted on a cart that can move horizontally and may be called a cart and pole. Most applications limit the pendulum to 1 degree of freedom by affixing the pole to an axis of rotation.

2013
Simultaneously Controlling 3 Stepper Motor with Lab-VIEW Software for Simulation Control of CNC and Making Driver, (Dr. Mohammad Danesh)

A stepper motor (or step motor) is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application.

2013
Stable Path Planning for Two Legged Robot (biped) and Analysis of Effect of Body Angle Parameter on Robot Stability, (Dr. Mohammad Jafar Sadigh)

Two-legged robots (bipeds) are better than other robots to move progressive capabilities, but have the problem of instability. For the robot is able to walk stable in different environments, it is necessary that the contact constraints, are satisfied by moving the legs.

2012
Design gearboxes of Grain silo, (Dr. Mohsen Badrossamay)

A machine consists of a power source and a power transmission system, which provides controlled application of the power. An assembly of parts including the speed-changing gears and the propeller shaft by which the power is transmitted from an engine to a live axle. Often transmission refers simply to the gearbox that uses gears and gear trains to provide speed and torque conversions from a rotating power source to another device.

2012
Analysis and Path Planning for 5 DOF Robot, (Dr. Mohammad Jafar Sadigh)

Path planning is an important issue as it allows a robot to get from point A to point B. In this project, first, the robot has been analyzed with Lagrange methods. Then the desired path designed. For defining the path, we used some of differential geometry concepts such as curvatures of the curves. Finally, with numerical methods, especially Euler method, the equations of degrees of freedom were solved.

2012
Design elements of gear shaft, (Dr. Saleh Akbarzadeh)

A drive shaft, driveshaft, driving shaft, propeller shaft (prop shaft), or Cardan shaft is a mechanical component for transmitting torque and rotation, usually used to connect other components of a drive train that cannot be connected directly because of distance or the need to allow for relative movement between them.

Drive shafts are carriers of torque: they are subject to torsion and shear stress, equivalent to the difference between the input torque and the load. They must therefore be strong enough to bear the stress, whilst avoiding too much additional weight as that would in turn increase their inertia.

2011
Presentation
Presentation about "Coriolis Effect", (Professor S. Ali A. Moosavian)

In physics, the Coriolis effect is a deflection of moving objects when they are viewed in a rotating reference frame. In a reference frame with clockwise rotation, the deflection is to the left of the motion of the object; in one with counter-clockwise rotation, the deflection is to the right. Although recognized previously by others, the mathematical expression for the Coriolis force appeared in an 1835 paper by French scientist Gaspard-Gustave Coriolis, in connection with the theory of water wheels. Early in the 20th century, the term Coriolis force began to be used in connection with meteorology.

2013
Research in Hydraulic Variable Displacement Pump and Fluid

A variable displacement pump is a device that converts mechanical energy to hydraulic (fluid) energy. The displacement, or amount of fluid pumped per revolution of the pump's input shaft can be varied while the pump is running.

Many variable displacement pumps are "reversible", meaning that they can act as a hydraulic motor and convert fluid energy into mechanical energy.

2013
Presentation about "Plastics engineering", (Dr. Alireza Fadaie Tehrani)

Plastics engineering encompasses the processing, design, development, and manufacture of plastics products. A plastic is a polymeric material that is in a semi-liquid state, having the property of plasticity and exhibiting flow. Plastics engineering encompasses plastics material and plastic machinery. Plastic Machinery is the general term for all types of machinery and devices used in the plastics processing industry. The nature of plastic materials poses unique challenges to an engineer. Mechanical properties of plastics are often difficult to quantify, and the plastics engineer has to design a product that meets certain specifications while keeping costs to a minimum.

2013
Introducing Gerotor Pump, (Dr. Mohammad Reza Forouzan)

A gerotor is a positive displacement pump. The name gerotor is derived from "Generated Rotor". A gerotor unit consists of an inner and outer rotor. The inner rotor has N teeth, and the outer rotor has N+1 teeth. The inner rotor is located off-center and both rotors rotate. The geometry of the two rotors partitions the volume between them into N different dynamically-changing volumes. During the assembly's rotation cycle, each of these volumes changes continuously, so any given volume first increases, and then decreases. An increase creates a vacuum. This vacuum creates suction, and hence, this part of the cycle is where the intake is located.

2013
Presentation about "Balancing of Flexible Rotors", (Prof. Saeed Ziaei-Rad)

Rotor unbalance is a basic concern in the design and operation of machinery because it is a major cause of excessive vibration. An early flexible- rotor balancing technique, was based on mode shapes (modal method). Moore demonstrated the practical application of the method to heavy rotating equipment. The controversy between modal and influence coefficient methods began with Goodman's formulation in 1962 of the influence coefficient methods Thearle for flexible rotors.

2012
Design, Analysis and Manufacture of UGV Robot, (Dr. Saleh Akbarzadeh)

An unmanned ground vehicle (UGV) is a vehicle that operates while in contact with the ground and without an onboard human presence. UGVs can be used for many applications where it may be inconvenient, dangerous, or impossible to have a human operator present. Generally, the vehicle will have a set of sensors to observe the environment, and will either autonomously make decisions about its behavior or pass the information to a human operator at a different location who will control the vehicle through teleoperation.

2012

 

 

Inventions:

6 DoF Industrial Serial Manipulator

Serial Manipulators are the most common industrial robots. They are designed as a series of links connected by motor-actuated joints that extend from a base to an end-effector. Often they have an anthropomorphic arm structure described as having a "shoulder", an "elbow", and a "wrist".

Serial robots usually have six joints, because it requires at least six degrees of freedom to place a manipulated object in an arbitrary position and orientation in the workspace of the robot.

...
2015
Cable Driven Parallel Robot (RoboCab)

Features:

  • High Acceleration and Dynamic Performances
  • Reduced Mass and Inertia
  • Large Load Carrying Capability to Robot Weight Ratio
  • Large Workspace
  • Easy of Assembly, Disassembly, and Configurability
  • Low Manufacturing, Maintenance Costs, and Price

Application:

2015
Euler Angles Measurement Unit Euler Angles Measurement Unit

An inertial measurement unit, or IMU, is an electronic device that measures and reports on a craft's velocity, orientation, and gravitational forces, using a combination ofaccelerometers and gyroscopes, sometimes also magnetometers. IMUs are typically used to maneuver aircraft, including unmanned aerial vehicles (UAVs), among many others, and spacecraft, including satellites and landers. Recent developments allow for the production of IMU-enabled GPS devices.

2014
Stewart Gough platform Prototype

A Stewart platform is a type of parallel robot that incorporates six prismatic actuators, commonly hydraulic jacks. These actuators are mounted in pairs to the mechanism's base, crossing over to three mounting points on a top plate. Devices placed on the top plate can be moved in the six degrees of freedom in which it is possible for a freely-suspended body to move. These are the three linear movements x, y, z (lateral, longitudinal and vertical), and the three rotations pitch, roll, & yaw. The term "six-axis"...

2014
Taxi-Meter Micro-controller Project Taxi-Meter Module

A taximeter is a mechanical or electronic device installed in taxicabs and auto rickshaws that calculates passenger fares based on a combination of distance travelled and waiting time. It is the shortened form of this word that gives the "taxi" its name.

Taximeters can include several accessories, or act as components in larger dispatching/control systems. Features include:

2014
Robot Controller System

A robot is a mechanical or virtual agent, usually an electro-mechanical machine that is guided by a computer program or electronic circuitry. Robots can be autonomous or semi-autonomous and range from humanoids such as Honda's Advanced Step in Innovative Mobility (ASIMO) and Tosy's TOSY Ping Pong Playing Robot (TOPIO) to industrial robots, collectively programmed 'swarm' robots, and even microscopic nano robots. By mimicking a lifelike appearance or automating movements, a robot may convey a sense of intelligence or thought...

2013
3 Stepper motor drive circuit board

Stepper motor performance is strongly dependent on the drive circuit. Torque curves may be extended to greater speeds if the stator poles can be reversed more quickly, the limiting factor being the winding inductance. To overcome the inductance and switch the windings quickly, one must increase the drive voltage. This leads further to the necessity of limiting the current that these high voltages may otherwise induce. 

L/R drive circuits

2013
KitchenAid (Industrial cooking Mixer)

KitchenAid is an American home appliance brand owned by Whirlpool Corporation. The company was started in 1919 by The Hobart Corporation to produce stand mixers; the "H-5" was the first model introduced. The company faced stiff competition as rivals moved into this emerging market, and introduced its trademarked silhouette in the 1930s with the model "K", the work of designer Egmont Arens. The brand's stand mixers have changed little in design since, and attachments from the model "K" onwards are compatible wit...

2013
Egg Drop Savior for Gravity Challenge

Egg drops are a traditional and popular school project in U.S. public schools. Educators can incorporate new variations on the standard egg drop, which involves dropping an egg from a certain height in a protective outer cover. In addition to the team and competitive functions of the project, other learning outcomes or science knowledge can be built into the activity. In "The Complete Handbook of Science Fair Projects," Julianne Bochinski notes that projects such as the egg drop "allow students to work out a ba...

2010

 

     

    References:

    • Prof. S. Ali A. Moosavian
      Affiliation: Faculty of Mechanical Engineering, K. N. Toosi University of Technology
      Website: wp.kntu.ac.ir/moosavian
      Email: moosavian@kntu.ac.ir
      Tell: +98 21 8406 3238
    • Dr. Mehdi Keshmiri
      Affiliation: Department of Mechanical Engineering, Isfahan University of Technology
      Website: keshmiri.iut.ac.ir
      Email: mehdik@cc.iut.ac.ir
      Tell: +98 31 3391 5217
    • Dr. Mohammad Danesh
      Affiliation: Department of Mechanical Engineering, Isfahan University of Technology
      Website: danesh.iut.ac.ir
      Email: danesh@cc.iut.ac.ir
      Tell: +98 31 33915223
    • Prof. Hamid D. Taghirad
      Affiliation: Faculty of Electrical Engineering, K. N. Toosi University of Technology
      Website: saba.kntu.ac.ir/eecd/taghirad
      Email: Taghirad@kntu.ac.ir
      Tell: +98 21 8846 9084