Rent 9781439818084 | Piezoelectric Actuators : Control Applications of Smart Materials

Summary Table of Contents

Currently, many smart materials exhibit one or multifunctional capabilities that are being effectively exploited in various engineering applications, but these are only a hint of what is possible. Newer classes of smart materials are beginning to display the capacity for self-repair, self-diagnosis, self-multiplication, and self-degradation. Ultimately, what will make them practical and commercially viable are control devices that provide sufficient speed and sensitivity. While there are other candidates, piezoelectric actuators and sensors are proving to be the best choice. Piezoelectric Actuators: Control Applications of Smart Materials details the authors' cutting-edge research and development in this burgeoning area. It presents their insights into optimal control strategies, reflecting their latest collection of refereed international papers written for a number of prestigious journals.Piezoelectric materials are incorporated in devices used to control vibration in flexible structures. Applications include beams, plates, and shells; sensors and actuators for cabin noise control; and position controllers for structural systems such as the flexible manipulator, engine mount, ski, snowboard, robot gripper, ultrasonic motors, and various type of sensors including accelerometer, strain gage, and sound pressure gages.The contents and design of this book make it useful as a professional reference for scientists and practical engineers who would like to create new machines or devices featuring smart material actuators and sensors integrated with piezoelectric materials. With that goal in mind, this book:Describes the piezoelectric effect from a microscopic point of viewAddresses vibration control for flexible structures and other methods that use active mountCovers control of flexible robotic manipulatorsDiscusses application to fine-motion and hydraulic control systemsExplores piezoelectric shunt technologyThis book is exceptionally valuable as a reference for professional engineers working at the forefront of numerous industries. With its balanced presentation of theory and application, it will also be of special interest to graduate students studying control methodology.

Preface	p. ix
Authors	p. xiii
Introduction	p. 1
Piezoelectric Effect	p. 1
General Requirements for Control Devices	p. 3
Control Strategies	p. 7
Introduction	p. 7
PID Control	p. 7
LQ Control	p. 8
Sliding Mode Control	p. 11
H Control	p. 13
QFT Control	p.... MORE 16
Inverse Model Control	p. 19
References	p. 22
Vibration Control of Flexible Structure	p. 23
Vibration Control of Beam Structures	p. 23
Introduction	p. 23
Dynamic Modeling	p. 24
Controller Formulation	p. 27
General Formulation	p. 27
Application to the Structure	p. 29
Control Results	p. 32
Some Final Thoughts	p. 36
Vibration Control of Hull Structures	p. 37
Introduction	p. 37
Dynamic Modeling	p. 39
Modal Analysis	p. 41
Controller Formulation	p. 44
Control Results	p. 45
Some Final Thoughts	p. 48
Vibration Control Using Piezostack Mount	p. 49
Introduction	p. 49
Mount Design	p. 50
System Modeling and Analysis	p. 51
Controller Formulation	p. 53
Control Results	p. 57
Some Concluding Comments	p. 60
References	p. 62
Vibration Control Using Active Mount	p. 65
One-Axis Active Mount	p. 65
Introduction	p. 65
Design and Modeling	p. 66
Controller Formulation	p. 76
Control Results	p. 78
Some Concluding Comments	p. 83
Three-Axis Active Mount	p. 83
Introduction	p. 83
Parameter Identification	p. 85
The Rubber Element	p. 85
The Piezoelectric Actuator	p. 86
Dynamic Modeling	p. 88
Controller Formulation and Results	p. 93
Some Concluding Comments	p. 100
References	p. 102
Control of Flexible Robotic Manipulators	p. 105
Two-Link Flexible Manipulator	p. 105
Introduction	p. 105
Dynamic Modeling	p. 106
Controller Formulation	p. 110
Sliding Mode Controller	p. 110
Constant Amplitude Controller	p. 111
Control Responses	p. 113
Some Final Thoughts	p. 116
Flexible Gantry Robot	p. 117
Introduction	p. 117
System Modeling	p. 118
Bidirectional ER Clutch Actuator	p. 118
Modeling of Flexible Gantry Robort System	p. 121
Controller Formulation	p. 125
Control Responses	p. 129
Some Final Thoughts	p. 131
References	p. 135
Application to Fine Motion Control System	p. 137
Optical Pickup Device	p. 137
Introduction	p. 137
Modeling and Mechanism Design	p. 138
Controller Formulation	p. 141
Control Results	p. 145
Some Concluding Comments	p. 147
Dual-Servo Stage	p. 147
Introduction	p. 147
Modeling and Mechanism Design	p. 151
Coarse Motion Stage	p. 151
Fine Motion Stage	p. 155
Controller Formulation	p. 158
Control Results	p. 162
Some Concluding Comments	p. 165
References	p. 167
Application to Hydraulic Control System	p. 171
Piezoactuator-Driven Pump	p. 171
Introduction	p. 171
Pump Design and Analysis	p. 172
Controller Formulation	p. 176
Control Results	p. 179
Some Concluding Comments	p. 181
Piezoactuator-Driven Jetting Dispenser	p. 182
Introduction	p. 182
Mechanism Design	p. 184
Dynamic Modeling	p. 185
Controller Formulation and Responses	p. 195
Some Concluding Comments	p. 203
References	p. 203
Piezoelectric Shunt Technology	p. 205
Vibration Control of CD-ROM Devices	p. 205
Introduction	p. 205
Shunt Circuit Design	p. 206
Implementation and Analysis	p. 210
Dynamic Characteristics of the CD-ROM Drive Base	p. 210
Admittance Analysis of the CD-ROM Drive Base with Piezoelectric Patches	p. 212
Shunt Responses	p. 216
Some Final Thoughts	p. 218
Vibration Control of the HDD Disk-Spindle System	p. 221
Introduction	p. 221
Modal Analysis	p. 225
Shunt Circuit Design	p. 230
Analysis and Optimization	p. 240
Admittance Analysis	p. 240
Sensitivity Analysis for Optimal Design	p. 243
Implementation and Results	p. 247
Some Final Thoughts	p. 252
References	p. 253
Index	p. 257
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