I. Introduction
Structural flexibility and subsequent difficulties with end effector position control of space-borne flexible robot manipulators present a significant problem in their operation. Minimizing flexural vibration and operating within strict time constraints requires the design of a controller with high tracking precision in fast execution time. This paper presents the identification of a heuristic design ratio for a fuzzy logic system (FLS) controller applied to a two-link flexible robot mounted on a stationary spacecraft. It is an extension to previous work on the development of an adaptive fuzzy controller [1]. A 12.6 × 12.6 m2 square trajectory is tracked to study the control of transient vibrations at direction switches.