Sampled data control of large space structures using constant gain velocity feedback: A negative view

A framework is developed for sampled data control of large space structures, in terms of discrete time recursive equations in second order form. This framework is used to analyze the simplest control scheme where the loop is closed using constant gain output velocity feedback. It is shown that the closed loop is stable if the feedback gain is positive definite and not too large, and if the output velocity feedback is properly specified. Properties of such a stabilizing controller establish the advantage of analog control of the form considered.