Research Article

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

Figure 2

The hydraulic schematic diagram of hydraulic actuator. 1: hydraulic differential cylinder; 2: displacement sensor; 3: pressure sensor; 4: bidirectional quantitative gear pump; 5: two-phase hybrid stepping motor; 6: oil tank; 7: temperature sensor; 8: electric control system; 9: hand pump; DC1 and DC2: solenoid valves; YL1: relief valve; YL2: overflow valve; YL3: counterbalance valve; YDF: pilot operated check valve; DF1, DF2, DF3, and DF4: check valves; S1 and S2: quick-change connector; KB: pressure joints; Y1: filter.