Method for simulating dynamic characteristic of controlled object and measuring and transducing process

A simulation method and technology of dynamic characteristics, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of laboratory crowding, large device footprint, large influence between groups, etc., and achieve a simple device structure. , the footprint is reduced, and the effect is easy to achieve

Inactive Publication Date: 2013-01-23
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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Problems solved by technology

The device occupies a large area, and when there are many sets of devices (generally more than ten sets), the laboratory is very crowded, and the influence between groups is large

Method used

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  • Method for simulating dynamic characteristic of controlled object and measuring and transducing process

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Embodiment Construction

[0020] The present invention will be described in detail below with reference to the accompanying drawings.

[0021] The invention is based on the theory of process dynamics. The mathematical expression form is the same as or similar to the theory and fluid dynamics principle. For the controlled process of production, the distributed parameters are processed by the set-accelerated method to obtain the concentrated parameter mathematical model, which can be used for teaching experiments or research. The present invention uses a transparent plastic water tank with an equal-area opening and a square bottom with holes as a basic unit to realize the partial realization of a mathematical model. The effective volume of the water tank represents the "capacity" in the process mechanism, and the size of the lower outlet aperture represents the "resistance". A water tank is a "resistance-capacity" link, and its transfer function is the first-order characteristic K / (TS+1 ). Inlet water ...

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Abstract

The invention relates to a method for simulating dynamic characteristics of a controlled object and a measuring and transducing process, which is used for obtaining a concentration parameter mathematical model by using a centralized processing method of distributed parameters for a production controlled technical process or a teaching experiment. The invention comprises the following methods of: a simulating method for establishing dynamic characteristics of a fluid technical process in a large chemical industry and a dynamic fluid transparent water tank which refers to a black box; a method for simulating purely retarding characteristics of a technical process; a method for simulating nonlinear characteristics of the technical process; a method for simulating unstable characteristics of an open loop of the technical process; a method for simulating multivariable coupling dynamic characteristics of the technical process; a method for simulating dynamic characteristics of a random process; and a method for simulating signal transmission process delay of a parameter measuring and transducing unit of the technical process. The technology of the invention can be used for physically simulating the technical process and the dynamic characteristics of production equirement, devices, machines, and the like of the liquid technology of the large chemical industry and can form an experiment which has various flexible and convenient object characteristics and can realize various object characteristics and control schemes with a single variable and multi-variables.

Description

technical field [0001] The invention relates to a method for realizing the dynamic characteristics for control, in particular to a method for simulating the dynamic characteristics of the controlled object and the measurement and transmission process in a process control experiment device. It can simulate the fluid process in large chemical production. Background technique [0002] At present, most of the process control experimental devices use water or water tanks, electric boilers, heat exchangers, etc., and electric energy as medium simulation methods. There are pipelines and fractional distributions between the simulation units, which occupy a large area and have few types of dynamic characteristics. At the same time, the number of controlled objects is difficult to achieve multi-input-multiple-output process and experiment with meeting process, which is not easy to meet the scientific research experiments of graduate students and teachers. Some of the characteristics ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
Inventor 纪兴权
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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