Control method and control mechanism for throttle motor of excavator

Abstract

The invention discloses a method for controlling a throttle motor of an excavator. A control mechanism mainly comprises a throttle control turn button detection circuit, an ARM controller, a throttle motor with position feedback and a throttle motor drive circuit, wherein the ARM controller controls the position of the turn button through a detection throttle, and two complementary PWM signal and turning control signals are generated therein to control the clockwise and counterclockwise turning and rotating speed of the throttle motor. Oil supply amount of an engine is controlled through a stay wire of the throttle motor to control the rotating speed of the engine. A triode circuit is added in the drive circuit of the throttle motor. The turning direction of the throttle motor can be immediately completed without time delay, and the control means is simple.

Description

technical field [0001] The invention relates to a control method and a control mechanism of an excavator, in particular to a driving control and a control mechanism for an accelerator motor of the excavator, so as to achieve the purpose of controlling the engine speed. Background technique [0002] At present, most domestic excavators use imported throttle controllers, which are costly, difficult to maintain, and the accuracy of throttle control is not high. The DC motor has good speed regulation performance and a wide speed regulation range, and can quickly and accurately pull the throttle to the target position to achieve precise and fast speed control. Conventional excavator throttle motor adopts 2-way PWM control, its principle is as follows figure 1 shown. [0003] The technical problem existing in the prior art: the forward and reverse switching process and control mode of the throttle motor are complicated. [0004] For the convenience of analysis, we first define ...

AI Technical Summary

Problems solved by technology

[0003]Technical problems existing in the prior art: the forward and reverse switching process of the accelerator motor and the control method are complex

When switching the forward and reverse of the throttle motor, the working mode configuration of the ARM needs to be changed, and the new mode configuration will not take effect until the ARM outputs a complete PWM waveform. There is a delay when the throttle motor is switched between the forward and reverse directions.

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