Page 236 - Servo Motors and Industrial Control Theory -

Index

A Controllability, 56, 61–63
Acceleration feedback, 125, 127, 145, 155, Current feedback, 139, 146, 155, 159
159 Current Source Inverter (CSI), 110
AC servo motors, 106, 113, 144, 148, 150
frequency converter, 101, 108–110, 113 D
mathematical model, 102, 103, 105, 115 Damper constant, 135
principle of operation, 101, 122 Dampers, 131, 133
variable speed AC motors, 101, 102 Damping coefficient, 97
Air-gap field, 102 Damping ratio, 22, 26, 70, 71, 73, 75, 81, 118,
Air-gap flux, 103 129, 138, 145
Amplitude ratio, 36, 120 Data processing technique, 131, 141
Amplitude ratio curve, 36, 37 DC servo motors
Angular rotation, 150, 152, 154 closed loop position control, 72–74
open and closed loop velocity control,
B 68–71
Bode diagram, 36, 37, 46, 75 performance requirment, 74, 75, 77–83
Brushless DC motors, 148, 155, 158 speed torque characteristic, 68
Brushless DC servo motors, 147, 150 type of power supply, 66, 67, 153
Bulk modular, 123 types of, 65
Derivative feedback, 48
C Differential equation, 17, 49, 75
Cage-rotor induction motor, 101 first order, 51, 53, 62, 63
Catch mechanism, 133 Dynamic matrix, 53, 61
Ceramic magnet DC motors, 144, 150 Dynamic observer, 60, 61
Ceramic magnet DC servo motors, 148, 151 Dynamic response time, 146, 147, 150, 151,
Characteristic Equation, 18, 19, 21–23, 25, 27, 154
44, 45, 49, 53, 55, 56, 58, 60, 63,
71, 73, 75, 77, 89, 124, 127, 130 E
Classical Feedback Control Theory See Eigenvalues, 53, 55–59, 61–63, 77, 79, 81
Feedback theory, 89 Eigenvectors, 53, 56, 63
Closed loop frequency response, 37 Electrical stepping servo motors, 91, 148, 151
Closed loop position control, 89 Electrohydraulic servo motor, 115, 124, 129
Closed loop transfer function, 19, 20, 22, 31, Electrohydraulic servo valve, 119–122
32, 43 characteristic of the, 125
Command signal, 51, 56, 70, 145 Electronic transducer, 46, 66
Compensation techniques, 125 Electro-Rheological Fluid (ERF), 131
Compressibility of hydraulic oil, 122 clutch and catch type actuators, 132, 133
Conduction period, 66 flow mode, property of, 134–137, 139

R. Firoozian, Servo Motors and Industrial Control Theory, Mechanical Engineering Series, 235
DOI 10.1007/978-3-319-07275-3, © Springer International Publishing Switzerland 2014