ME 229
Design of Basic Electro-mechanical Devices

Fall Semester 2007

Instructor: 

Professor Dennis K. Lieu
5128 Etcheverry Hall, 642-4014
Office Hours:   TuTh 10-12
dlieu@me.berkeley.edu

Description

Fundamental principles of magnetics, electro-magnetics, and magnetic materials as applied to design and operation of electro-mechanical devices.  Applied magnetic theory:  magnetic motive force, permeance, flux, intensity, leakage.  Properties of magnets and magnetic materials.  Principles of operation of basic electro-mechanical devices and their drivers.  Design of actuators and motors to meet force, torque, back EMF, and capacity requirements.  Type and dimensional synthesis and material specification for custom applications of linear and rotary actuators, stepper motors, synchronous motors, and DC brushless motors.  Specification of poles, phases, winding patterns, and impedance.  3 units.

Lectures:  WF 4:5:30, 3106 Etcheverry Hall
Website: www.me.berkeley.edu/me229/F07

Pre-requisites

EECS 40 or EECS 100 or EECS 104.  Graduate standing in ME or EE, or consent of instructor.

Required Textbook

ME229 Lecture Notes, D.K. Lieu, UC Berkeley Department of Mechanical Engineering, 2007 version. 

Reference Textbooks

Magnetic Fundamentals and Motion Devices, H.D. Chai, Prentice Hall, 1999.

Handbook of Electric Machines, S.A. Nasar; McGraw-Hill

Electro-mechanical Motion Devices, P.C. Krause, O. Wasynczuk; McGraw-Hill

Scoring

               25% HW
               25% Midterm Exam
               50% Final Exam

ME 229   Electro-mechanical Devices, Fall Semester 2007

Week
 Dates Topics
   
1
 Aug 29, 31 Class organization.  Get copy of required course notes.
Review physics E&M and circuits courses.
2
 Sep 5, 7 Review of Basic Electro-magnetic Theory.
Magnetic Properties, Flux, Permeability.
3
 Sep 12, 14 Reluctance Circuits, Inductance, Speedance.
Behavior of Permanent Magnet Materials.
4
 Sep 19, 21 Charging Permanent Magnets.
Permanent Magnet Circuits, Magnetic Operating-Point, Load-line.
5
 Sep 26, 28 Experimental and Analytical Formulation of Magnetic Leakage.
Creation of Magnetic Energy and Force.
6
 Oct 3, 5 Coreless (BIL) Devices,
The Voice Coil Motor.
7
 Oct 10, 12  Midterm Exam.
Review of Midterm Exam.
8
 Oct 17, 19 Kinetic Model of the Voice Coil Motor.
Design Considerations, Configuration, some Non-Linear Effects.
9
 Oct 24, 26  Theory of the Shorted Turn.  Toroid and Slotless Motors.
2-Phase Devices, Cores and Slots, Commutation.
10
 Oct 31, Nov 2  3-Phase Devices, Demagnetization, Torque vs. Motor Constant.
Software for motor design.
11
 Nov 7, 9   Transistors and Diodes, Current Switching, H-bridge.
3-Phase Drivers, Hall Effect Switches, Switch Timing Diagrams.
12
 Nov 14, 16 Thermal Protection of Motors, Insulation Rating, UL Standards.
Stepper Motor Operation, PM Steppers, Hybrid Steppers
13
 Nov 21, 23   Thanksgiving Break
14
 Nov 28, 30  Variable Reluctance (Switched Reluctance) Stepper Motors.
Torque using a Permeance Based Model in Hybrid Steppers.
15
 Dec 5, 7 Torque using a Permeance Based Model in VR Steppers.
Inductance Calculation in Stepper Motors.

Downloads

Ferrite properties
Neodymium properties
Plastiform compression properties
Plastiform flexible properties
Plastiform injection molded properties
Samarium properties
Samarium properties 2


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Last modified October 16, 2007
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