Electric Drives and Electromechanical Systems: Applications and Control

✍ Scribed by Richard Crowder

• Publisher: Butterworth-Heinemann
• Year: 2019
• Tongue: English
• Leaves: 309
• Edition: 2
• Category: Library

✦ Synopsis

Electric Drives and Electromechanical Devices: Applications and Control, Second Edition, presents a unified approach to the design and application of modern drive system. It explores problems involved in assembling complete, modern electric drive systems involving mechanical, electrical, and electronic elements. This book provides a global overview of design, specification applications, important design information, and methodologies. This new edition has been restructured to present a seamless, logical discussion on a wide range of topical problems relating to the design and specification of the complete motor-drive system. It is organised to establish immediate solutions to specific application problem. Subsidiary issues that have a considerable impact on the overall performance and reliability, including environmental protection and costs, energy efficiency, and cyber security, are also considered.

• Presents a comprehensive consideration of electromechanical systems with insights into the complete drive system, including required sensors and mechanical components
• Features in-depth discussion of control schemes, particularly focusing on practical operation
• Includes extensive references to modern application domains and real-world case studies, such as electric vehicles
• Considers the cyber aspects of drives, including networking and security

✦ Table of Contents

Cover
Electric Drives and Electromechanical Systems: Applications and Control
Copyright
Preface
List of principal symbols
1 -
Electromechanical systems
1.1 Principles of automation
1.2 Machine tools
1.2.1 Conventional subtractive machining processes
1.2.2 Non-conventional subtractive machining processes
1.2.3 Additive manufacturing processes
1.2.4 Machining centres
1.3 Robotics
1.3.1 Industrial robotics
1.3.2 Robotic end effectors
1.3.3 Mobile and swarm robotics
1.3.4 Walking robots
1.4 Automotive applications
1.4.1 Conventional vehicles
1.4.2 Electric vehicles
1.5 Aerospace applications
1.6 Motion-control systems
1.7 Summary
References
2. Analysing a drive system
2.1 Rotary systems
2.1.1 Fundamental relationships
2.1.2 Torque considerations
2.1.3 Gear ratios
2.1.4 Acceleration without an external load
2.1.5 Acceleration with an applied external load
2.1.6 Accelerating a load with variable inertia
2.2 Linear systems
2.3 Wheeled systems
2.4 Force based systems
2.5 Friction
2.6 Motion trajectories
2.7 Assessment of a motor-drive system
2.7.1 Mechanical compatibility
2.7.2 Electromagnetic compatibility
2.7.3 Wiring considerations
2.7.4 Supply considerations
2.7.5 Protection from the environment
2.7.6 Hazards and risk
2.8 Summary
References
3 -
Power transmission and sizing
3.1 Gearboxes
3.1.1 Conventional gears
3.1.2 Planetary gearbox
3.1.3 Harmonic gearbox
3.1.4 Cycloid gearbox
3.2 Lead and ball screws
3.3 Belt drives
3.4 Bearings
3.4.1 Conventional bearings
3.4.2 Conventional linear bearings
3.4.3 Friction in conventional bearings
3.4.4 Air bearings
3.4.5 Magnetic bearings
3.5 Couplings
3.6 Shafts
3.7 Linear drive considerations
3.8 Review of motor-drive sizing
3.8.1 Continuous duty
3.8.2 Intermittent duty
3.8.3 Inability to meet both the speed and the torque requirements
3.8.4 Linear motor sizing
3.9 Summary
Reference
4 -
Velocity and position transducers
4.1 The performance of measurement systems
4.1.1 Random errors
4.1.2 Systematic errors
4.1.3 Digital-system errors
4.1.4 Analogue-digital and digital-analogue conversion errors
4.1.5 Dynamic performance
4.1.6 Errors introduced by the process
4.2 Rotating velocity transducers
4.2.1 Brushed d.c. tachogenerators
4.2.2 Brushless d.c. tachogenerators
4.2.3 Incremental systems
4.2.4 Electromechanical pulse encoders
4.3 Position transducers
4.3.1 Brushed potentiometers
4.3.2 Linear variable differential transformers - LVDT
4.3.3 Resolvers
4.3.4 Inductosyn
4.3.5 Optical position sensors
4.4 Installation considerations for position and velocity transducers
4.4.1 Mechanical installation
4.4.2 Electrical interconnection
4.4.3 Determination of datum position
4.5 Summary
References
5 -
Brushed direct-current motors
5.1 Review of motor theory
5.2 Direct-current motors
5.2.1 Ironless-rotor motors
5.2.2 Iron-rotor motors
5.2.3 Torque motors
5.2.4 Printed-circuit motors
5.3 Drives for d.c. brushed motors
5.3.1 Linear amplifiers
5.3.2 Pulse width modulated servo drives
5.3.3 Analysis of the bipolar PWM amplifier
5.3.4 PWM amplifiers
5.4 Regeneration
5.5 Summary
Reference
6 -
Brushless motors
6.1 The brushless d.c. motor
6.1.1 Torque-speed characteristics
6.1.2 Brushless d.c. motor controllers
6.1.3 Rotor-position measurement
6.1.4 Commutation logic
6.1.5 Controller
6.1.6 Sensorless control
6.2 Sinewave-wound brushless motors
6.2.1 Torque characteristics
6.2.2 Voltage characteristics
6.2.3 Torque-speed characteristics
6.2.4 Control of sinewave-wound brushless motors
6.3 Linear motors
6.4 Summary
References
7 -
Induction motors
7.1 Induction motor characteristics
7.2 Scalar control
7.3 Vector control
7.3.1 Vector control principles
7.3.2 Implementation of vector control
7.3.3 Vector control using sensors
7.3.4 Sensorless vector control
7.4 Matrix converter
7.5 Summary
References
8 -
Stepper motors
8.1 Principles of stepper-motor operation
8.1.1 Multistack variable-reluctance motors
8.1.2 Single-stack variable-reluctance motors
8.1.3 Hybrid stepper motors
8.1.4 Linear stepper motor
8.1.5 Comparison of motor types
8.2 Static-position accuracy
8.3 Torque-speed characteristics
8.4 Control of stepper motors
8.4.1 Open-loop control
8.4.2 Translators and drive circuits
8.5 Summary
References
9 -
Related motors and actuators
9.1 Voice coils
9.2 Limited-angle torque motors
9.3 Piezoelectric motors
9.4 Shape-memory alloy
9.5 Switched reluctance motors
9.6 Summary
References
10 -
Controllers for automation
10.1 Servo control
10.1.1 Digital controllers
10.1.2 Advanced control systems
10.2 Simulation of drives and controllers
10.3 Motion controllers
10.3.1 Axis controllers
10.3.2 Machine tool controllers
10.4 Programmable logic controllers
10.4.1 Combinational logic programming
10.4.2 Sequential logic programming
10.5 Summary
References
11 -
Cyber Physical systems and security
11.1 Conventional networks
11.1.1 Networking
11.1.2 Network topology
11.1.3 OSI and TCP/IP model
11.1.4 Industrial specific networking
11.2 Supervisory control and data acquisition
11.3 Industry 4.0
11.3.1 Internet of things
11.3.2 Cloud computing and manufacturing
11.3.3 Manufacturing and big data
11.4 Risks due to the convergence IT and IACS systems
11.5 Cybersecurity
11.6 Concluding comments
References
Appendix
1: Units and conversion factors
Index
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
Y
Z
Back Cover