Automatic control experiment teaching device and method

Abstract

The invention discloses an automatic control experiment teaching device and method and belongs to the field of teaching. The device comprises a controlled object unit, a sensor unit, an actuator unit,a controller unit and a computer unit. The controlled object unit comprises a hot heat exchanger, a primary side water loop, a secondary side water loop, two electric control valves, three electric valves, two water pumps, a cold water tank, a hot water tank, a hot water tank electric heater and a fan coil. The man-machine interaction software controls the operation of the system through the function module. The function module comprises a communication module, a storage module, a real-time control algorithm module and a data analysis module. By setting a control target and performance indexes, students can distinguish the dynamic characteristics of the system and practice various control algorithms on the platform system. Customization of the algorithm module enables students to debug any analysis code and control algorithm over the first-hand data. According to the experiment teaching system, students can explore variable rules and establish models by themselves, and organic combination of control theories and experiment practices is achieved by reconstructing a knowledge system in experiments.

Description

technical field [0001] The invention belongs to the fields of research, experiment and teaching of automatic control technology, and specifically relates to an automatic control experiment teaching device and method, which can be widely used in teaching experiments of energy majors, chemical engineering majors and metallurgy majors in various schools. Background technique [0002] Automatic control is a highly practical subject. In automatic control experiment teaching, system modeling, model verification, model parameter identification and control theory verification build a complete automatic control knowledge framework for students. [0003] The existing automatic control experiment system has the following problems: (1) Students usually use software for system modeling and control system simulation, and rarely carry out modeling, model verification, and control theory verification of physical systems. The experience and method of the pure software system are difficult to...

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Problems solved by technology

[0003]The existing automatic control experiment system has the following problems: (1) Students usually use software for system modeling and control system simulation, and rarely build physical systems However, the experience and methods obtained from real systems cannot be replaced by pure software systems; (2) students usually carry out the measurement of steady-state systems and the verification of the balance of conservation characteristics, and rarely carry out Transient measurement, time-domain dynamic model verification and analysis under excitation, students' lack of understanding of system dynamic performance will make it difficult for students to apply the control system to the actual system organically; (3) Although a small number of schools follow the actual The industrial environment sets up a process control system for experiments, but such a system costs a lot, and the teaching objectives are unclear and the knowledge points are fragmented. It is difficult for students to control the entire system and build a complete knowledge system from it; (4) Most of the experimental platforms in schools Use general-purpose commercial configuration software, and the openness of such software is usually relatively low. Many students in the experiment just adjust parameters, and it is difficult to freely adjust and combine control schemes, and it is difficult to practice advanced algorithms.

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