Double proportional-integral control method for pneumatic clutch

Abstract

The invention relates to a double proportional-integral control method for a pneumatic clutch. The double proportional-integral control method comprises the steps that in the sliding friction stage ofthe clutch, the clutch disengaged target position and the clutch engaged target position are determined through a lookup table algorithm according to the throttle opening degree, the engine rotatingspeed and the gearbox input shaft rotating speed; then an air inlet valve of the clutch and an exhaust valve of the clutch are simultaneously controlled through the proportional-integral control method, the air inlet valve of the clutch and the exhaust valve of the clutch work simultaneously, and thus disengaged and engaged control is simultaneously conducted on the clutch. According to the doubleproportional-integral control method, in the sliding friction stage of the clutch, the air inlet valve of the clutch and the exhaust valve of the clutch work simultaneously, and position adjusting ofthe clutch is quick in response and stable; and when the position of the clutch is adjusted in the sliding friction stage of the clutch, a clutch pressure plate moves stably, the clutch transmits torque change stably, and thus stable starting of vehicles is ensured.

Description

technical field [0001] The invention belongs to the technical field of pneumatic clutch control, and in particular relates to a double proportional integral control method of a pneumatic clutch. Background technique [0002] In the transmission system of a car, the clutch can combine and interrupt the power transmission of the engine, so as to realize the functions of ensuring the smooth start of the car, smooth shifting and limiting the maximum torque borne by the transmission system. In drivetrains with AMT transmissions, clutch disengagement and engagement are usually controlled pneumatically. In the control process of the pneumatic clutch, when the clutch is in the slippery phase, the torque transmitted by the clutch is particularly affected by the displacement of the clutch. Shock and affect the smoothness of vehicle starting and shifting. [0003] Due to the high compressibility of the gas, the pneumatic control has the characteristics of a large time lag, and the ga...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the deficiencies of the above-mentioned prior art, and provides a dual-proportional integral control method for a pneumatic clutch, which is used to solve the problem of ensuring the clutch pressure plate moves smoothly and ensuring the quick response of the clutch position adjustment when the clutch is in the slipping phase, thereby ensuring that the vehicle smooth start

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