Double-air-cylinder synchronous drive control device and method

Abstract

The invention discloses a double-air-cylinder synchronous drive control device and method. The device comprises an air cylinder drive detection part and a control part; two air cylinders are fixed to an experiment table in parallel, a pressure sensor is mounted between a piston rod and a rotating rod to detect pull pressure borne by two ends of the rotating rod, the pull pressure is transmitted to an A / D conversion card, and is input to an industrial control computer through a data collection card, the industrial control computer outputs control instructions according to stress signals, the instructions are output to a gas control unit through a D / A conversion card, and the two air cylinders are controlled to synchronously drive. The characteristics that a pull pressure sensor is high in sampling frequency and high in measuring precision are used, force output by the two air cylinders is monitored in real time, and in combination of control of an air cylinder position inductor over the position of the piston rod and control of a proportional direction control valve over the air amount, through the corresponding algorithm of the industrial control computer, synchronous control over drive of the dual air cylinders is achieved.

Description

technical field [0001] The invention relates to the field of synchronous drive control, in particular to a dual-cylinder synchronous drive control device and method. Background technique [0002] With the development of science and technology, a new impetus has appeared in the development of modern manufacturing industry, which marks more complex production tasks and high-precision production requirements. People have higher and higher requirements on the quality and product performance of mechanical equipment, and in some occasions, controlling a single drive device can no longer meet the work requirements. In the process of equipment control, it is often necessary to coordinate and synchronize control of multiple motion units to meet work requirements. Under the new manufacturing development situation, the synchronous control method of the mechanical system is continuously developed, the scale is continuously expanded, and it is widely used in various fields. Synchroniza...

AI Technical Summary

Problems solved by technology

Among them, the gas-driven system is low cost, easy to maintain, and high power, but due to the complex nonlinear dynamics, the synchronization of the system is a problem

[0003] Existing gas-driven synchronization systems mostly use cylinders to drive mechanical mechanisms to achieve the purpose of synchronization. This can actually be regarded as a mechanically driven synchronization method, but due to the mechanical transmission gap, it is difficult to adjust the transmission ratio. , due to the constraints of the elastic modulus of the total axis, etc., the synchronization accuracy is greatly affected

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