Control method based on engine cylinder cover lifting mechanism

Abstract

The invention discloses a control method based on an engine cylinder cover lifting mechanism, relates to the technical field of lifting mechanism control, and solves the technical problem that the lifting mechanism is not stable in the process of high-speed low-speed switching. According to the method, the running track of the lifting mechanism is divided into a plurality of operation intervals, and the acceleration corresponding to each operation interval is set; and the current position numerical value of the lifting mechanism is acquired in real time, the operation interval where the lifting mechanism belongs is determined by comparing a comparison array with the numerical value, and the lifting mechanism is operated at the acceleration corresponding to the operation interval where thelifting mechanism belongs through a motor frequency conversion control mode. The control method realizes stable switching of the lifting mechanism during high-speed and low-speed switching, reduces the shaking of the cylinder cover in the lifting process, reduces the occurrence rate of faults such as mechanical impact, equipment shaking, motor hard internal contracting brake and the like, is highin safety coefficient, reliable in operation and high in efficiency, and greatly meets the circulation beat of the engine production line.

Description

technical field [0001] The present invention relates to the technical field of lifting mechanism control, more specifically, it relates to a control method based on the engine cylinder head lifting mechanism. Background technique [0002] When the engine cylinder head is subjected to the cold and heat shock cycle test, the cylinder head needs to be lifted by the lifting mechanism and moved in the vertical direction. During the process of lifting the cylinder head by the lifting mechanism, the lifting mechanism usually directly accelerates and then decelerates. However, the maximum operating speed of this control method is generally high, and usually the impact force is relatively large when switching between high and low speeds due to excessive high speed, which can easily cause the lifting mechanism to stumble or produce abnormal noise due to impact during braking and deceleration. In severe cases, it will lead to crashing into dead gears, damage to equipment, and failure ...

AI Technical Summary

Problems solved by technology

However, the maximum operating speed of this control method is generally high, and the impact force is relatively large when switching between high and low speeds due to the high speed, which can easily cause the lifting mechanism to fumble when braking and decelerate or cause abnormal noise due to impact. In severe cases, it will lead to crashing dead gears, damage to equipment, failure of motor brakes, etc.

This control method makes the cylinder head very unstable during the lifting process, easy to shake, and serious production accidents such as cylinder head falling

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