A method for linear correction of solenoid valve electric control handle

Abstract

The invention discloses a linear correction device of an electric control handle of a solenoid valve, and a correction method thereof, and belongs to the technical field of linear correction of electric control handles of solenoid valves. The technical problem to be solved is to provide a hardware structure of a linear correction device of an electric control handle of a solenoid valve, and the improvement of a correction method thereof; and the technical solution adopted to solve the technical problem is that the linear correction device comprises a signal correction module and a signal processing module, wherein the signal correction module comprises a Hall sensor, an analog-digital conversion controller, a first controller and a first communication module; the Hall sensor is mounted onthe mobile shaft of the electric control handle, the signal output end of the Hall sensor is connected to the first controller through the analog-digital conversion controller, and the signal output end of the first controller is connected to the first communication module through a wire; the signal processing module comprises a second communication module, a second controller, a signal amplification module and a proportional solenoid; and the second communication module is wirelessly connected to the first communication module through a wireless network. The invention is applied to electric control handles of solenoid valves.

Description

technical field [0001] The invention discloses a method for linear correction of an electric control handle of a solenoid valve, which belongs to the technical field of linear correction of an electric control handle of a solenoid valve. Background technique [0002] The electro-hydraulic control system used in traditional construction machinery is that the driver operates the handle on the solenoid valve, manually controls the opening of the hydraulic proportional valve on the construction machinery itself, drives the actuator to control the equipment to complete the corresponding action, and at the same time controls the speed of the action. For example, control the loading and unloading of the excavator's mechanical arm, the lifting of the boom, and the lowering of the boom. [0003] In the remote control system of construction machinery, the traditional hydraulic proportional valve will be replaced by a proportional solenoid valve, and the opening of the solenoid valve i...

AI Technical Summary

Problems solved by technology

[0004] At present, in the control system of the electromagnetic valve of construction machinery, the remote control transmitting unit is used to send the signal of the electric control handle on the device in different positions to the vehicle-mounted wireless receiving unit of the construction machinery itself, and the programmable logic controller PLC on the vehicle-mounted receiving unit Or the main controller unit MCU outputs a pulse width modulated PWM signal with a duty cycle of 0%-100% according to the received electric control handle position signal, and controls the opening of the proportional solenoid valve linearly through this signal; however, due to the proportional The solenoid valve is a nonlinear device, so there is a nonlinear problem in the hydraulic action output of the control, which is manifested in the output of some hydraulic actions is too fast, and the output of some hydraulic actions is too slow, or in the same control action, the action output of the handle in different areas The speed and feel are also different, making it difficult to accurately control the action position of mechanical equipment, resulting in repeated adjustments, poor control accuracy, and low control efficiency

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