ABSTRACT
This chapter discusses only the nodal deflection control problem. The situation in statically indeterminate adaptive structures opens the opportunity of stress and deformation control, but also causes difficulties in nodal deflection control due to alterations in stress and deformation states. The number of primary actuators that one needs to use in an adaptive structure depends on many things. Among them the most important one is the number of response components one would like to control. The actuator placement in statically indeterminate adaptive structures follows procedures similar to those of the actuator placement in statically determinate adaptive structures. The main difference is in the use of secondary actuators in order to prevent stress build-up as a result of controls induced by the primary actuators. The basic philosophy here is to determine the primary actuators first, and then take advantage of the discussions in the previous section to handle the compatibility problem.
