Valve hysteresis compensation method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention discloses a valve hysteresis compensation method and device, electronic equipment and a storage medium, wherein the method comprises the steps: obtaining an input current, a circuit model and a mechanical fluid model of a valve, determining a target pressure according to the input current, determining a predicted pressure according to the input current and the mechanical fluid model, determining a first control current according to the target pressure and the predicted pressure, determining a second control current according to the input current and the circuit model, and determining a compensated input current input valve according to the first control current and the second control current. According to the method, the compensation precision is improved, meanwhile, the method is more suitable for the dynamic change condition, the stability is improved, and the requirement for a sensor is reduced, so that the cost is reduced, the dynamic and static response characteristics of the valve are improved, the influence caused by nonlinearity is eliminated, the repeatability is improved, the response time lag is reduced, and thus the performance of the valve is improved.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a valve hysteresis compensation method, device, electronic equipment and storage medium. Background technique [0002] At present, there is a nonlinear relationship between the input and output of the valve, and there are different deviations between the output outlet pressure value and the ideal curve under the same input current under different conditions, and the repeatability is poor. In terms of timing, it is manifested as the lag of the overall system response, which not only affects the operator's work experience, but also affects the overall work efficiency of the excavator. The hysteresis not only affects the outlet pressure output, but also affects the subsequent flow output pump valve matching. Moreover, the nonlinear characteristics of different valves are different, and it is urgent to eliminate the differences. In order to improve the response of the valve, reduc...

AI Technical Summary

Problems solved by technology

Feedback compensation requires sensors on each valve, high cost, low stability and not suitable for all situations

At present, many solutions for hysteresis compensation of pressure reducing valves are still in the laboratory research stage, and it is difficult to implement them.

Images