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Heating furnace temperature controller design method based on improved Dahlin algorithm

A technology of temperature controllers and design methods, applied in the direction of general control systems, control/regulation systems, instruments, etc., capable of solving problems such as inability to respond and solve problems, research, etc.

Inactive Publication Date: 2016-07-27
CENT SOUTH UNIV
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Problems solved by technology

Since it only builds a simulation system in simulink, it cannot reflect and solve problems encountered in practical applications
On June 3, 2015, the application number "CN:201310625793:A" is "a temperature control system based on the Dalin algorithm". The temperature control system is designed based on the Dalin algorithm. This invention just applies the traditional Dalin algorithm to the control In the design of the controller, there is no in-depth study on the shortcomings in the control

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  • Heating furnace temperature controller design method based on improved Dahlin algorithm
  • Heating furnace temperature controller design method based on improved Dahlin algorithm
  • Heating furnace temperature controller design method based on improved Dahlin algorithm

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Embodiment Construction

[0032] The controlled object heating furnace structure of the present invention is as follows: figure 1As shown, port 1 is connected to AC220V, port 2 is connected to the control variable u, 3 is a voltage regulator (model LSA-2P16YB), 4 is the resistance wire of the heating furnace, and 5 is the furnace body of the heating furnace (length 8cm, width 3cm, height 2cm ), 6 is the Pt100 temperature transmitter, and port 7 is the output end of the heating furnace temperature. The working process of the heating furnace temperature monitoring system adopted in the present invention is: Pt100 converts the collected temperature signal (0-200°C) into a corresponding current signal (4-20mA), and uses it as the analog input of S7-300PLC; S7-300PLC calculates the control signal u by the internal control algorithm according to the temperature signal, and sends it to the voltage regulator through the analog output port, and then controls the resistance wire of the heating furnace. Data exc...

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Abstract

The invention discloses a heating furnace temperature controller design method based on an improved Dahlin algorithm.For the nonlinear characteristic of a heating furnace, according to the heating furnace temperature controller design method, different temperature set value jump intervals are set according to the size differences of temperature difference jump values of set target temperature and initial temperature, and different expected closed loop transfer functions are set in all the intervals to design a temperature controller.When heating furnace temperature controller design is conducted, the problems that for a traditional Dahlin algorithm temperature controller, the adjusting time is long, and steady state error elimination is slow are considered, the Dahlin algorithm is combined with integral control, special processing is conducted on control quantity limitation, the steady state error is further eliminated, the adjusting time is further shortened, and control over the heating furnace temperature can be achieved more rapidly and accurately.

Description

technical field [0001] The invention relates to the technical field of automatic control, and relates to a design method of a heating furnace temperature controller based on the improved Dalin algorithm. Background technique [0002] In metallurgical industry, chemical industry, agriculture, light industry and other manufacturing industries, heating furnace is one of the important production equipment widely used, and plays an important role in the industrial production process. Fast and accurate control of the furnace temperature is not only related to the quality of the product, but also improves production efficiency. Therefore, inventing a controller design method that can quickly and accurately control the temperature of the heating furnace has important practical significance and broad application prospects. [0003] At present, the classic PID controller still occupies an important position in the furnace temperature control system due to its advantages of small calc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B17/02
CPCG05B17/02
Inventor 彭辉田晓盈罗旭光聂仕媛程琢曾灿张天周锋
Owner CENT SOUTH UNIV
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