Teaching aid based on PID (proportional-integral-derivative) control system and control method thereof

Abstract

The invention belongs to the technical field of teaching aids and particularly relates to a teaching aid based on a PID (proportional-integral-derivative) control system and a control method thereof.The teaching aid comprises a spring weight system, a PLC (programmable logic controller) control circuit module to control the spring weight system to run and a human-machine interaction device connected with the PLC control circuit module. The spring weight system is internally provided with a plurality of weights and a motor to drive the weights to rotate; the weights are sequentially connectedvia springs; an analog detection module feeds detection data back to the PLC control circuit module; the detection data that is processed is displayed in the human-machine interaction device. The invention is intended to provide the teaching aid based on the and the control method thereof in order to provide PLC application teaching based on student-written programs, and students may gain a deep understanding of the application of a PLC in a control system through the simple PID control system teaching aid.

Description

technical field [0001] The invention belongs to the technical field of teaching aids, in particular to a teaching aid and a control method based on a PID control system. Background technique [0002] Since the world's first PLC was developed by the American Digital Equipment Corporation in 1969, PLC has been widely used in steel, Various industries such as petroleum, chemical industry, electric power, building materials, machinery manufacturing, automobile, textile, transportation, environmental protection, culture and entertainment, etc. However, at present, in the teaching process of courses involving electromechanical transmission control, robot control and mechanical engineering control, colleges and universities still pay more attention to theoretical teaching than practical operation ability, and cannot effectively express automation-related control theories more concretely in the teaching process. It is relatively abstract in the learning process, and it is difficult...

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Problems solved by technology

However, at present, in the teaching process of courses involving electromechanical transmission control, robot control and mechanical engineering control, colleges and universities still pay more attention to theoretical teaching than practical operation ability, and cannot effectively express automation-related control theories more concretely in the teaching process. It is relatively abstract in the learning process, and it is difficult to understand how to apply the relevant control theory knowledge learned in books to practical projects. Therefore, it is very necessary to add relevant actual control object platforms in the course teaching process, based on microprocessors such as PLC and single chip microcomputer. Apply the relevant knowledge of control theory to the control of actual objects, strengthen the practical teaching link, improve students' practical ability, and lay a teaching foundation for cultivating students with "theory + practice" compound ability

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