Novel lightweight direct drainage servo system and device

The invention provides a novel lightweight direct drainage servo system and device. Comprising a constant-value pressure reducing valve, a one-way valve, a high-pressure safety valve, an essential oil filter, a servo valve, a hydraulic control one-way valve, a hydraulic cylinder, a displacement sensor, a pressure accumulator, an electromagnetic directional valve, an energy selection valve, a high-pressure test hose, a low-pressure test hose, a high-pressure self-sealing joint, a low-pressure self-sealing joint and a logic control algorithm, the energy redundancy module and the ground test energy module share the high-pressure test hose, and the system is provided with the temporary ejection zero setting control function module under the condition of no motor pump test energy, so that the power density ratio and the reliability of the servo mechanism are improved. 本发明提供了一种新型轻质化直接引流伺服系统和装置，包括定值减压阀、单向阀、高压安全阀、精油滤、伺服阀、液控单向阀、液压缸、位移传感器、蓄压器、电磁换向阀、能源选择阀、高压测试软管、低压测试软管、高压自封接头、低压自封接头和逻辑控制算法，不仅实现了能源冗余模块与地面测试能源模块共用高压测试软管，而