Fault Detection and Isolation of a segmented telescope testbed

Fault Detection and Isolation is one of the necessary requirements to guarantee the stability and performance of a control system under fault conditions. This scope of this paper will focus on the methods used to identify sensor and actuator failures. An observer based approach is used in conjunction with a sensor relationship on a segmented primary dish telescope testbed located at the NASA sponsored Structures Pointing And Control Engineering (SPACE) laboratory at California State University, Los Angeles. The use of a sensor relationship that is not dependent on the input of the system allows for a differentiation between actuator and sensor faults.