Flexible switching device and method for automated experiment platform with time-delay configuration function

Abstract

The invention provides an automatic experimental platform flexible switching device and method with a time delay configuration function. The device comprises a control system side I / O board, a controlled object side I / O board card and a switching computer system. A set of flexible switching devices is established between different control systems and a controlled object with no need for changing of hard wire connection, flexible switching between different control systems can be achieved only through the operation of flexible switching software in the switching computer system, in the same control system, flexible switching of different channels is performed also in the same type of the board card through software, the time delay size of the controlled object is configured at will to obtain the generalized controlled object with any time delay size to make the research experiment and the teaching experiment of industrial process control smoothly complete with no need for replacement ofthe control system and repeated connection each time so as to save a lot of experiment time and have high necessity.

Description

technical field [0001] The invention belongs to the field of research, experiment and teaching of industrial automation and process control technology, and in particular relates to a flexible switching device and method of an automatic experiment platform with a time-delay configuration function. Background technique [0002] Industrial automation and process control are highly practical disciplines oriented to actual industrial processes. In order to meet the research, experiment and teaching needs of industrial automation and process control technology, it is necessary to establish a laboratory environment that is highly consistent with the on-site industrial environment. Industrial process automation experiment platform. The industrial process automation experiment platform is mainly composed of the controlled object and the control system. The controlled object includes: the controlled process, the testing instrument and the actuator. At present, in the industrial field...

AI Technical Summary

Problems solved by technology

If it is necessary to rewire between different control systems, actuators, and testing instruments every time an experiment is done, it will inevitably increase the time of the experiment, the risk of the equipment and the risk of the experiment, and greatly increase the maintenance cost. Obviously, it is not feasible of

[0004] On the other hand, the time-delay characteristic generally exists in the industrial production process. The typical production process includes but not limited to the pipeline transportation process, the belt transportation process and many thermal processes, etc. Many control schemes are proposed for the time-delay problem of the controlled object. Therefore, in this type of control algorithm experiments, such as Smith predictive control, minimum variance control, generalized minimum variance control, feedforward control, zero-pole configuration control, self-tuning control, etc., the controlled object of the experimental platform is required It should be able to simulate corresponding characteristics such as large time delay, variable time delay, and unknown time delay. Once the general physical process is determined, its time delay will also be determined, and it is difficult to change it according to experimental requirements.

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