Abstract
Power match control of hydraulic power systems involves continuous control of the output power of the hydraulic pump so as to agree with the power of the load actuator. In a previous report, we investigated the dynamic performance of pressure match control, employing an electrohydraulic power match system driven by the differential-PWM method. The result showed that the system had good control performance. The feature of this system is different from that of a conventional type ; that is, pressure, flow rate or power of the load actuator can be controlled without the need for any control valves such as a load-sensing valve and a flow control valve. In this report, the performance of flow rate match control is evaluated by experiment and computer simulation. It is verified that the system has good control performance.
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