Eigenstructure Control Algorithms: Applications to aircraft / rotorcraft handling qualities design

✍ Scribed by S. Srinathkumar

• Publisher: The Institution of Engineering and Technology
• Year: 2011
• Tongue: English
• Leaves: 304
• Series: IET Control Engineering Series 74
• Category: Library

✦ Synopsis

Uniquely covers both theoretical development and detailed flight control application examples-Of interest to both control and aeronautical engineers as well as being of use to doctoral students and flight control researchers in universities. Contents: Eigenstructure assignment characterisation. Eigenstructure synthesis algorithm. Eigenstructure assignment by output feedback. Robust Eigenstructure assignment. Modal canonical observers. Model following control systems. Flight control system design guidelines. Aircraft lateral-directional handling qualities design. Aircraft longitudinal handling qualities design. Rotorcraft handling qualities design. Aircraft flutter control system design. Relevant flight mechanics models. F-8C Aircraft state variable models. BO - 105 Helicopter state variable models. Properties of singular matrix pencils. Conversion of FPS units to SI units.

✦ Table of Contents

Eigenstructure Control Algorithms: Applications to aircraft/rotorcraft handling qualities design......Page 4
Contents......Page 8
Preface......Page 14
Acknowledgements......Page 17
1.1 Multivariable system synthesis......Page 18
1.2 Eigenstructure assignment formulations......Page 19
1.4 Flight control system design......Page 21
1.5 Flight vehicle handling qualities design......Page 22
1.6 Flight control law design process......Page 24
References......Page 25
2.1 Definitions......Page 28
2.2 Introduction......Page 29
2.3 State feedback design......Page 30
2.4 Examples......Page 33
References......Page 36
3.1 Introduction......Page 38
3.2 Eigenstructure synthesis......Page 39
3.3 Example......Page 42
3.6 Summary......Page 45
Reference......Page 46
4.1 Introduction......Page 48
4.2.1 Assignment of max(m,r) eigenvalues......Page 49
4.2.2 Assignment of (m+r−1) eigenvalues......Page 51
4.3 Eigenstructure assignment for systems with proper outputs......Page 54
4.4 Eigenstructure assignment with dynamic output feedback......Page 55
4.5 Examples......Page 56
References......Page 60
5.2 Robustness metrics......Page 62
5.3 Robust eigenstructure characterisation......Page 64
5.4 Robust eigenstructure assignment......Page 66
5.5 Examples......Page 67
5.6 Summary......Page 70
References......Page 71
6.1 Introduction......Page 72
6.2 Problem formulation......Page 73
6.3 Unknown input observer with mixed outputs......Page 74
6.3.1 Necessary conditions for the existence of the observer......Page 77
6.4 Unknown input observers with strictly proper outputs......Page 79
6.5 Known input observer......Page 82
6.6 Examples......Page 83
6.7 Summary......Page 89
References......Page 90
7.1 Introduction......Page 92
7.2 Command generator tracker......Page 93
7.4 Explicit and implicit model following control......Page 96
7.5 Perfect implicit model following control......Page 97
7.6 Examples......Page 99
References......Page 108
8.1 Introduction......Page 110
8.2 Flight vehicle handling qualities requirements......Page 111
8.3 Lateral–directional aircraft handling qualities requirements......Page 112
8.4 Longitudinal aircraft handling qualities requirements......Page 114
8.4.2 Control anticipation parameter......Page 115
8.4.3 Bandwidth criterion......Page 116
8.4.4 Gibson’s longitudinal handling qualities criteria......Page 117
8.5 Rotorcraft handling qualities requirements......Page 120
8.6.1 Single-loop stability margins......Page 122
8.6.2 Multivariable stability margins......Page 123
8.6.5 Allowable feedback gain magnitudes......Page 124
References......Page 125
9.1 Introduction......Page 128
9.2 Control problem formulation......Page 129
9.3 Feedback sensor considerations......Page 130
9.4 Aircraft eigenstructure assignment......Page 131
9.4.1 Synthesis of mode decoupled eigenvectors......Page 132
9.4.1.1 Roll mode modification......Page 133
9.4.1.3 Dutch roll mode modification......Page 134
9.5 Aircraft eigenstructure optimisation......Page 137
9.5.1 State feedback design......Page 138
9.5.2 Dynamic output feedback design......Page 142
9.6 Aircraft performance assessment......Page 143
9.6.1 Feedback design characteristics......Page 144
9.6.2 Handling qualities performance......Page 149
9.6.3 Departure resistance characteristics......Page 151
9.6.4 Single-loop stability margins......Page 152
9.6.5 Multivariable stability margins......Page 153
9.6.6 Gibson’s PIO resistance criterion......Page 155
9.6.7 Turbulence response......Page 157
9.7 Roll/yaw damper design......Page 158
References......Page 167
10.2.1 Short-period model and time response......Page 170
10.2.3 Estimation of angle of attack and angle of attack rate signals......Page 173
10.3 Aircraft model for design studies......Page 174
10.4 Control of relaxed static stability aircraft......Page 175
10.5.1 Feedback design......Page 176
10.5.2 Command filter design......Page 177
10.6 Superaugmented controller design......Page 178
10.7.1 Control law performance analysis......Page 179
10.7.2 Handling qualities characteristics......Page 183
10.7.4 Stability margins......Page 190
10.8 Implicit model following control design......Page 191
10.8.2 Handling qualities characteristics......Page 195
10.9 Pitch pointing mode controller design......Page 202
10.10 Summary......Page 206
References......Page 207
11.1 Introduction......Page 210
11.3 BO-105 helicopter model......Page 211
11.4.2 Pitch–roll cross coupling......Page 215
11.4.3 State feedback control law design......Page 216
11.4.4 Functional observer design......Page 217
11.5 Feedback controller performance analysis......Page 218
11.5.1 Eigenvector decoupling characteristics......Page 219
11.5.2 Dynamic stability and bandwidth......Page 221
11.5.4 Stability margins......Page 223
11.6 Command path controller......Page 228
References......Page 235
12.2.1 Wind tunnel model......Page 238
12.2.2 Mathematical model......Page 239
12.3 Flutter mechanism......Page 241
12.4.1 Design objectives and specifications......Page 242
12.4.2 Feedback controller evolution......Page 243
12.4.4 Flutter filter controller......Page 247
12.4.5 Eigenstructure controller......Page 249
12.5 Controller performance assessment......Page 251
12.5.1 System robustness......Page 253
12.5.2 Wind tunnel turbulence response......Page 256
12.6.1 Test objectives......Page 257
12.7 Multiple flutter mode suppression......Page 258
12.8 Summary......Page 261
References......Page 262
A.1 Aircraft lateral–directional state variable model......Page 264
A.2.1 Dutch roll mode contamination in roll rate response......Page 265
A.3 Aircraft response to turbulence disturbance......Page 266
References......Page 268
B.1 F-8C aircraft rigid body models......Page 270
B.2 Lateral–directional design model......Page 271
B.3 Truth model for lateral–directional control design......Page 272
References......Page 274
C.2 Rotor model......Page 276
C.4 Truth model......Page 278
References......Page 280
D.1 Introduction......Page 282
D.2 Kronecker canonical form of a matrix pencil (KCF)......Page 283
D.3 Staircase canonical form of a matrix pencil (SCF)......Page 284
D.5 Example......Page 285
References......Page 287
Appendix E: Conversion of FPS units to SI units......Page 288
Epilogue......Page 290
Reference......Page 293
Bibliography......Page 294
Index......Page 296

✦ Subjects

Транспорт;Авиационная техника;