Hydraulic-pump flow-rate calibration system

A hydraulic-pump flow-rate calibration system, comprising:

• a first hydraulic pump of a variable capacitance type that is connected to a hydraulic actuator and supplies an operating fluid to the hydraulic actuator, the hydraulic actuator operating at a speed corresponding to a flow rate of the operating fluid supplied to the hydraulic actuator;
• a second hydraulic pump that is connected to the hydraulic actuator and supplies the operating fluid to the hydraulic actuator;
• a first regulator that changes a dispense flow rate of the first hydraulic pump according to a first flow rate command signal input to the first regulator;
• a switch valve that is connected to the first hydraulic pump, the second hydraulic pump, and the hydraulic actuator and connects one of the first hydraulic pump and the second hydraulic pump to the hydraulic actuator;
• a flow rate detection device that detects the flow rate of the operating fluid to be supplied to the hydraulic actuator;
• a control device that outputs, to the first regulator, the first flow rate command signal calculated based on a first reference characteristic, to control the first regulator;
• and
• a calibration device that calculates a first actual measurement characteristic indicating the dispense flow rate of the first hydraulic pump for the first flow rate command signal, and performs, on the first reference characteristic, calibration based on the first actual measurement characteristic, wherein
• the first actual measurement characteristic is calculated based on the flow rate detected, as a result of the first hydraulic pump and the hydraulic actuator being connected by the switch valve and the flow rate of the operating fluid to be supplied to the hydraulic actuator being detected by the flow rate detection device during output of a predetermined first flow rate command signal from the control device to the first regulator, and
• the control device outputs, to the first regulator, the first flow rate command signal calculated based on the first reference characteristic calibrated based on the first actual measurement characteristic, to control the dispense flow rate of the first hydraulic pump.