Fault Tolerance for Active Surface System with Actuator Faults

Table 3

Comparison of the main reflector rms after adopting fault-tolerant method.

Elevation angle (deg)	0	20	35	70
Surface error when ASAS disabled (mm rms)	0.5300	0.3797	0.3300	0.4355
Surface error with no-faulty actuators (ideal) when ASAS enabled (mm rms)	0	0	0	0
Surface error with faulty actuators when ASAS enabled (mm rms)	0.2588	0.2819	0.2178	0.2834
Surface error with fault-tolerant when ASAS enabled by proposed method (mm rms)	0.0701	0.1552	0.1332	0.2237