Frequency characteristic test of electro-hydraulic servo mechanism based on ADSTK

摘要

Electro-hydraulic servo mechanism is the actuator of the missile to adjust the implementing agencies, the frequency characteristic test is important content in the test. In order to reduce the dependency of the filter on the statistical characteristics of the noise during the testing process, an improved adaptive strong tracking filter (ADSTK) is proposed to suppress the noise in the frequency characteristic test. With ADSTK, the time-varying process noise and measurement noise were estimated online and filtered, and dependence of noise prior statistical properties was reduced. By the simulation, anti-interference ability of the system was improved and the effectiveness of the algorithm was verified.