OPTIMAL PLACEMENT OF ACTUATORS IN ACTIVELY CONTROLLED STRUCTURES

The paper deals with the influence of actuator/sensor locations and feedback gains on the optimum design of actively controlled structures. Two related problems are addressed. The first is a parametric study dealing with the effect of number and location of actuators on the minimum weight structural design, while satisfying constraints on the closed loop eigenvalues and damping ratios. The second problem addresses the optimal placement of actuators with the damping augmentation provided by the control action being used as the performance criterion. A solution methodology which allows for an integrated determination of feedback gains and actuator/sensor locations while maximizing the energy dissipated by the controller is presented. Since the actuator locations are spatially discrete whereas the feedback gains are continuous, the resulting optimization problem has mixed discrete-continuous design variables. This problem is solved using a hybrid optimization method which is a synergistic blend of artificial...

[1]  Arthur L. Hale,et al.  Optimal simultaneous structural and control design of maneuvering flexible spacecraft , 1985 .

[2]  David E. Goldberg,et al.  Genetic Algorithms in Pipeline Optimization , 1987 .

[3]  John H. Holland,et al.  Adaptation in Natural and Artificial Systems: An Introductory Analysis with Applications to Biology, Control, and Artificial Intelligence , 1992 .

[4]  Singiresu S Rao,et al.  Robust design of actively controlled structures using cooperative fuzzy games , 1992 .

[5]  V. B. Venkayya,et al.  Frequency Control and Its Effect on the Dynamic Response of Flexible Structures , 1985 .

[6]  G. Schulz,et al.  Dislocated actuator/sensor positioning and feedback design for flexible structures , 1983 .

[7]  Singiresu S Rao,et al.  Optimal placement of actuators in actively controlled structures using genetic algorithms , 1991 .

[8]  P. Hajela.  Genetic search - An approach to the nonconvex optimization problem , 1990 .

[9]  R. Haftka,et al.  An approach to structure/control simultaneous optimization for large flexible spacecraft , 1987 .

[10]  Singiresu S. Rao,et al.  Game theory approach for the integrated design of structures and controls , 1988 .

[11]  Ramana V. Grandhi,et al.  EFFECT OF NUMBER OF ACTUATORS ON OPTIMUM ACTIVELY CONTROLLED STRUCTURES , 1992 .

[12]  Gun-Shing Chen,et al.  OPTIMAL PLACEMENT OF ACTIVE/PASSIVE MEMBERS IN TRUSS STRUCTURES USING SIMULATED ANNEALING , 1991 .

[13]  Firdaus E. Udwadia,et al.  Simultaneous optimization of controlled structures , 1988 .

[14]  Carlos S. Kubrusly,et al.  Sensors and controllers location in distributed systems - A survey , 1985, Autom..

[15]  David F. Miller,et al.  Gradient-based combined structural and control optimization , 1987 .

[16]  Huibert Kwakernaak,et al.  Linear Optimal Control Systems , 1972 .

[17]  David E. Goldberg,et al.  Genetic Algorithms in Search Optimization and Machine Learning , 1988 .

[18]  Franklin E. Eastep,et al.  Optimal structural modifications to enhance the active vibration control of flexible structures , 1986 .

[19]  Raphael T. Haftka,et al.  Selection of actuator locations for static shape control of large space structures by heuristic integer programing , 1985 .

[20]  Lawrence Davis,et al.  Job Shop Scheduling with Genetic Algorithms , 1985, ICGA.