ME 229, Fall 2009

ME 229
Design of Basic Electro-mechanical Devices

Fall Semester 2009

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

GSI: Alex Green
2116 Etcheverry Hall, 643-5281
Office Hours: MW 10:15-11:30
alex_n_green@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:
ThTu 2 - 3:30, 179 Stanley Hall

Website: www.me.berkeley.edu/ME229

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

Homework

Solutions

Exams

Lecture Notes

Announcements:

29 Sep: The Midterm Exam is be on Thursday, 8 October. By class vote, it will be a take-home exam. The exam will be distributed in class, and will be due in my office (5128 Etcheverry Hall) no later than 5:00 PM on Friday, 9 October.
Alex Green's office hours on Wednesdays will be moved to Fridays, 11-1. Location will still be 2116 Etcheverry Hall.
23 Sep: The Lecture scheduled for this Thursday has been moved to Friday, 25 Sep, 9-10 AM, 3110 Etcheverry Hall.

ME 229   Electro-mechanical Devices, Fall Semester 2009

Week
Dates Topics

1
Aug 27 Class organization. Get copy of required course notes.
Review physics E&M and circuits courses.

2
Sep 1, 3 Review of Basic Electro-magnetic Theory.
Magnetic Properties, Flux, Permeability.

3
Sep 8, 10 Reluctance Circuits, Inductance, Speedance.
Behavior of Permanent Magnet Materials.

4
Sep 15, 17 Charging Permanent Magnets.
Permanent Magnet Circuits, Magnetic Operating-Point, Load-line.

5
Sep 22, 24 Experimental and Analytical Formulation of Magnetic Leakage.
Creation of Magnetic Energy and Force.

6
Sep 29, Oct 1 Coreless (BIL) Devices,
The Voice Coil Motor.

7
Oct 6, 8 Midterm Exam.
Review of Midterm Exam.

8
Oct 13 Kinetic Model of the Voice Coil Motor.
Design Considerations, Configuration, some Non-Linear Effects.

9
Oct 20, 22 Theory of the Shorted Turn. Toroid and Slotless Motors.
2-Phase Devices, Cores and Slots, Commutation.

10
Oct 27, 29 3-Phase Devices, Demagnetization, Torque vs. Motor Constant.
Software for motor design.

11
Nov 3, 5 Transistors and Diodes, Current Switching, H-bridge.
3-Phase Drivers, Hall Effect Switches, Switch Timing Diagrams.

12
Nov 10, 12 Thermal Protection of Motors, Insulation Rating, UL Standards.
Stepper Motor Operation, PM Steppers, Hybrid Steppers

13
Nov 17, 19   Variable Reluctance (Switched Reluctance) Stepper Motors.
Torque using a Permeance Based Model in Hybrid Steppers.

14
Nov 28, 30 Thanksgiving Break

15
Dec 1, 3 Torque using a Permeance Based Model in VR Steppers.
Inductance Calculation in Stepper Motors.

Final exam: Exam Group 5, Monday 14 December 2009

Downloads

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

Comments to webmaster@me.berkeley.edu
Last modified October 8, 2009
© UC Regents

Instructor:	Prof. Dennis K. Lieu 5128 Etcheverry Hall, 642-4014 Office Hours: TuTh 10-12 dlieu@me.berkeley.edu
GSI:	Alex Green 2116 Etcheverry Hall, 643-5281 Office Hours: MW 10:15-11:30 alex_n_green@berkeley.edu

Lectures:	ThTu 2 - 3:30, 179 Stanley Hall
Website:	www.me.berkeley.edu/ME229

Week	Dates	Topics

1	Aug 27	Class organization. Get copy of required course notes. Review physics E&M and circuits courses.
2	Sep 1, 3	Review of Basic Electro-magnetic Theory. Magnetic Properties, Flux, Permeability.
3	Sep 8, 10	Reluctance Circuits, Inductance, Speedance. Behavior of Permanent Magnet Materials.
4	Sep 15, 17	Charging Permanent Magnets. Permanent Magnet Circuits, Magnetic Operating-Point, Load-line.
5	Sep 22, 24	Experimental and Analytical Formulation of Magnetic Leakage. Creation of Magnetic Energy and Force.
6	Sep 29, Oct 1	Coreless (BIL) Devices, The Voice Coil Motor.
7	Oct 6, 8	Midterm Exam. Review of Midterm Exam.
8	Oct 13	Kinetic Model of the Voice Coil Motor. Design Considerations, Configuration, some Non-Linear Effects.
9	Oct 20, 22	Theory of the Shorted Turn. Toroid and Slotless Motors. 2-Phase Devices, Cores and Slots, Commutation.
10	Oct 27, 29	3-Phase Devices, Demagnetization, Torque vs. Motor Constant. Software for motor design.
11	Nov 3, 5	Transistors and Diodes, Current Switching, H-bridge. 3-Phase Drivers, Hall Effect Switches, Switch Timing Diagrams.
12	Nov 10, 12	Thermal Protection of Motors, Insulation Rating, UL Standards. Stepper Motor Operation, PM Steppers, Hybrid Steppers
13	Nov 17, 19	Variable Reluctance (Switched Reluctance) Stepper Motors. Torque using a Permeance Based Model in Hybrid Steppers.
14	Nov 28, 30	Thanksgiving Break
15	Dec 1, 3	Torque using a Permeance Based Model in VR Steppers. Inductance Calculation in Stepper Motors.