Optimum placement of controls for static deformations of space structures

Many large space structures, such as large antennas, have to maintain a fairly exact shape to operate satisfactorily. Such structures require active and passive controls to maintain their accurate shape under disturbances. The present paper is concerned with optimum placement of controls for correcting static deformations. Both force actuators and heaters are considered for controls. A formulation of design against the worst disturbance is derived. A beam example is employed to demonstrate the procedure.

[1]  C A Primmerman,et al.  Thermal-blooming compensation: experimental observations using a deformable-mirror system. , 1976, Applied optics.

[2]  J. Hedgepeth.  Critical requirements for the design of large space structures , 1981 .

[3]  J. W. Hardy,et al.  Active optics: A new technology for the control of light , 1978, Proceedings of the IEEE.

[4]  P. Hughes,et al.  Errata: Controllability and Observability for Flexible Spacecraft , 1980 .

[5]  David Bushnell,et al.  Control of Surface Configuration of Nonuniformly Heated Shells , 1979 .

[6]  L. A. Schmit,et al.  NEWSUMT: A FORTRAN program for inequality constrained function minimization, users guide , 1979 .

[7]  J. Hedgepeth.  Accuracy potentials for large space antenna reflectors with passive structure , 1982 .

[8]  James E. Pearson,et al.  Experimental studies of a deformable-mirror adaptive optical system* , 1977 .

[9]  M. R. Sullivan,et al.  LSST (Hoop/Column) Maypole Antenna Development Program, phase 1, part 1 , 1982 .

[10]  David Bushnell,et al.  Control of Surface Configuration by Application of Concentrated Loads , 1979 .

[11]  Raphael T. Haftka,et al.  An analytical investigation of shape control of large space structures by applied temperatures , 1985 .

[12]  W. H. Greene.  Effects of random member length errors on the accuracy and internal loads of truss antennas , 1985 .

[13]  T. J. Karr,et al.  Improved Figure Control With Edge Application Of Forces And Moments , 1980, Other Conferences.

[14]  C. J. Weeks,et al.  Shape determination and control for large space structures , 1981 .