On the placement of active members in adaptive truss structures for vibration control

The problem of optimal placement of active members which are used for vibration control in adaptive truss structures is investigated. The control scheme is based on the method of eigenvalue assignment as a means of shaping the transient response of the controlled adaptive structures, and the minimization of required control action is considered as the optimization criterion. To this end, a performance index which measures the control strokes of active members is formulated in an efficient way. In order to reduce the computation burden, particularly for the case where the locations of active members have to be selected from a large set of available sites, several heuristic searching schemes are proposed for obtaining the near-optimal locations. The proposed schemes significantly reduce the computational complexity of placing multiple active members to the order of that when a single active member is placed.

[1]  J. A. Garba,et al.  Experimental studies of active members in control of large space structures , 1988 .

[2]  Senol Utku,et al.  Control of a slow-moving space crane as an adaptive structure , 1991 .

[3]  Ben K. Wada,et al.  Adaptive structures - An overview , 1990 .

[4]  Senol Utku,et al.  Inverse Dynamics of Adaptive Structures Used as Space Cranes , 1990 .

[5]  K. Miura,et al.  An Adaptive Structure Concept for Future Space Applications , 1988 .

[6]  E. Anderson,et al.  Development of an active member using piezoelectric and electrostrictive actuation for control of precision structures , 1990 .

[7]  M. Pröbster,et al.  Ballistic anomalies in solid rocket motors due to migration effects , 1986 .

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

[9]  Richard W. Longman,et al.  A definition of the degree of controllability - A criterion for actuator placement , 1979 .

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

[11]  Raphael T. Haftka,et al.  Optimum placement of controls for static deformations of space structures , 1984 .

[12]  Harry H. Robertshaw,et al.  A planar comparison of actuators for vibration control of flexible structures , 1989 .

[13]  Senol Utku,et al.  On the Transition Matrix for First Order Systems , 1988 .

[14]  T. Soong,et al.  Optimal controller placement in modal control of complex systems , 1980 .

[15]  M. Salama,et al.  Selection of active member locations in adaptive structures , 1989 .

[16]  H. Baruh,et al.  On the placement of actuators in the control of distributed-parameter systems , 1981 .

[17]  Hiroshi Furuya,et al.  Variable geometry truss and its application to deployable truss and space crane arm , 1985 .

[18]  A. Arbel.  Controllability measures and actuator placement in oscillatory systems , 1981 .