Online Monitoring Technique of Power Condition for Inverter-Fed Motor Driven Hydraulic System

Figure 5

(a) Schematic diagram of experiment platform. 1-variable frequency motor, 2/7-torque and speed sensors, 3-variable piston pump, 4-slippage pump, 5-safety valve, 6-variable piston motor, 8-gear pump, 9-proportional relief valve, 10/14-globe valve, 11/15/17-filter, 12-relief valve, 13/19/22-pressure sensor, 16-radiator, 18-tank, 20-temperature sensor, and 21-flow meter. (b) Hydromechatronics test platform. (c) Wiring diagram of three-phase electric parameter acquisition.

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