Mechatronics: Electronic Control Systems In Mechanical and Electrical Engineering, 7th Edition by Pearson

Chapter nine

Electrical actuation systems

Objectives

The objectives of this chapter are that, after studying it, the reader should be able to:

• Evaluate the operational characteristics of electrical actuation systems: relays, solid-state switches (thyristors, bipolar transistors and MOSFETs), solenoids, d.c. motors, a.c. motors and steppers.
• Explain the principles of d.c. motors, including the d.c. permanent magnet motor and how it can have its speed controlled.
• Explain the principle of the brushless permanent magnet d.c. motor.
• Explain the principles of the variable reluctance, permanent magnet, hybrid forms of stepper motor and how step sequences can be generated, and d.c. servomotors.
• Explain the requirements in selecting motors of inertia ...