Theoretical and Experimental Analysis of the Hydraulic Actuator Used in the Active Reflector System

Table 1

Step adjustment strategy.

	The judgment criterion		Control Mode
: the response of the system is in the rising phase.	: the output is close to the target.	: the output is close to the target.	rise slowly; to avoid overshoot	1
		: the output slightly exceeds the target.	restrain overshoot	2
	: the output is seriously deviated from the target.	: the output is greatly lower than the target.	rise rapidly; to reduce rise time	-2
		: the output greatly exceeds the target.	down rapidly	3
: the response of the system is in the decline phase.	: the output is close to the target.	: the output slightly exceeds the target.	restrain overshoot	2
		: the output is close to the target.	down slowly; to avoid overshoot	1
	: the output is seriously deviated from the target.	: the output greatly exceeds the target.	rise rapidly	3
		: the output is greatly lower than the target.	down rapidly; to reduce fall time	-2
: the response of the system is in the stationary phase.	--	Constant	keep steady to avoid the static error and oscillation	1