Patent ID: 11933327
Assignee: SHANDONG UNIVERSITY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 15:
16. A drive system for a hydraulic actuator with no friction and zero leakage, comprising a controller, a hydraulic pump, a proportional valve, a relief valve, a plurality of pressure sensors, and a plurality of hydraulic actuators with no friction and zero leakage according to claim 15;
the hydraulic pump is connected with an oil inlet of the proportional valve, and an oil outlet of the proportional valve is connected with the drive oil access holes of the plurality of hydraulic actuators with no friction and zero leakage,
the relief valves are set on a connection pipeline between the hydraulic pump and the oil inlet, and a connection pipeline between the oil outlet and the drive oil access hole;
the plurality of pressure sensors are configured to obtain a pressure in the control cavity of each of the plurality of hydraulic actuators with no friction and zero leakage;
the controller is configured to calculate an output displacement of the plurality of hydraulic actuators with no friction and zero leakage according to the pressure in the control cavity; and
the output displacement is compared with a commanded displacement to obtain a control signal, and the proportional valve is controlled by the control signal.