Hard Disk Drive Servo Systems, 2nd Edition (Advances in Industrial Control)

✍ Scribed by Ben M. Chen, Tong H. Lee, Kemao Peng, Venkatakrishnan Venkataramanan

• Year: 2006
• Tongue: English
• Leaves: 320
• Edition: 2nd
• Category: Library

✦ Synopsis

The second edition of this monograph provides a systematic treatment of the design of hard disk drive servo systems updated to reflect recent improvements in spindle speed and bit density and other changes in this fast-moving field. In particular, it focuses on the applications of some newly developed results in control theory, i.e., robust and perfect tracking control and composite non-linear feedback control which are suitable for track following and seeking respectively. Emphasis is placed on hard disk drive servo systems with single- or dual-stage actuation using a voice-coil-motor actuator enhanced in the latter case by the addition of a micro-actuator providing faster responses and therefore higher bandwidth in track following. Modeling and compensation of nonlinearities and friction in microdrives, disturbance rejection and resonance compensation are also addressed. The Linear Systems and CNF MATLAB® toolkits used to develop many of the results can be downloaded from the book's website.

✦ Table of Contents

Contents......Page 13
Notation......Page 17
Part I: Introduction and Background Material......Page 19
1.1 Introduction......Page 20
1.2 Historical Development......Page 22
1.3 Overview of HDD Servo Systems......Page 26
1.4 Implementation Setup......Page 34
1.5 Preview of Each Chapter......Page 35
2.1 Introduction......Page 38
2.2 Time-domain Methods......Page 39
2.3 Frequency-domain Methods......Page 43
2.4 Physical Effect Approach with Monte Carlo Estimations......Page 49
3.1 Introduction......Page 53
3.2 Structural Decomposition of Linear Systems......Page 54
3.3 PID Control......Page 63
3.4 H[sub(2)] Optimal Control......Page 65
3.5 H[sub(∞)] Control and Disturbance Decoupling......Page 84
3.6 Robust and Perfect Tracking Control......Page 92
3.7 Loop Transfer Recovery Technique......Page 104
4.1 Introduction......Page 111
4.2 Time-optimal Control......Page 112
4.3 Proximate Time-optimal Servomechanism......Page 117
4.4 Mode-switching Control......Page 120
5.1 Introduction......Page 134
5.2 Continuous-time Systems......Page 135
5.3 Discrete-time Systems......Page 157
5.4 Can We Beat Time-optimal Control?......Page 177
5.5 CNF Control Software Toolkit......Page 179
Part II: HDD Servo Systems Design......Page 191
6.1 Introduction......Page 192
6.2 VCM Actuator Model......Page 193
6.3 Track-following Controller Design......Page 194
6.4 Simulation and Implementation Results......Page 201
7.1 Introduction......Page 214
7.2 Track Seeking with PTOS Control......Page 215
7.3 Track-seeking with MSC......Page 216
7.4 Track Seeking with CNF Control......Page 218
7.5 Simulation and Implementation Results......Page 219
8.1 Introduction......Page 229
8.2 Modeling of a Dual-stage Actuator......Page 230
8.3 Dual-stage Servo System Design......Page 232
8.4 Simulation and Implementation Results......Page 236
9.1 Introduction......Page 255
9.2 Modeling of the Microdrive Actuator......Page 257
9.3 Microdrive Servo System Design......Page 267
9.4 Simulation and Implementation Results......Page 271
10.1 Introduction......Page 280
10.2 Linearization of Nonlinear Hysteretic Dynamics......Page 283
10.3 Almost Disturbance Decoupling Controller Design......Page 286
10.4 Final Controller and Simulation Results......Page 291
11 A Benchmark Problem......Page 301
References......Page 307
G......Page 317
L......Page 318
R......Page 319
Z......Page 320