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Baking oven temperature and humidity control system and method based on two-dimensional space 3-D fuzzy control

A humidity control system, temperature and humidity control technology, applied in the direction of temperature control, control/regulation system, non-electric variable control, etc., can solve the problems of not achieving the overall uniform control of the space, poor design, and poor space control effect.

Inactive Publication Date: 2016-02-17
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to a very common problem, that is, the temperature and humidity control effect of the existing oven is good locally, but the control effect for the entire space is relatively poor
All in all, the current temperature and humidity control of the oven is not designed from the perspective of the overall space, and it cannot achieve uniform control over the entire space

Method used

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  • Baking oven temperature and humidity control system and method based on two-dimensional space 3-D fuzzy control
  • Baking oven temperature and humidity control system and method based on two-dimensional space 3-D fuzzy control
  • Baking oven temperature and humidity control system and method based on two-dimensional space 3-D fuzzy control

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: see Figure 1~Figure 4 , the oven temperature and humidity control system based on the two-dimensional space 3-D fuzzy control method, including an oven (1) and a temperature and humidity control system, the oven is equipped with a number of oven temperature and humidity sensors (7 ), there is an air duct (3) in the baking oven (1), and there is a circulating fan (5) and an electric furnace (6) on the air duct (3), and there is a damper device (4) to control the air duct (3). It is characterized in that: the temperature and humidity control system includes a PC (8) and a control signal drive circuit (10), the control signal drive circuit (10) is connected to the PC (8) and the power supply (9), and connected to The damper device (4), circulation fan (5) and electric furnace (6) of the oven (1), and the oven temperature and humidity sensor (7) in the oven (1) is connected to the PC (8) data acquisition module.

Embodiment 2

[0027] Embodiment 2: This embodiment is basically the same as Embodiment 1, and the special features are as follows: the circuit structure of the control signal drive circuit (10): the control signal amplifier circuit (10-1) in the control signal drive circuit (10) Connect the I / O drive circuit (10-2), the control signal amplification circuit (10-1) is connected with the PC (8) for the control signal amplification and transmission to the drive circuit, the I / O drive circuit (10-2) Connect the control object electric furnace (6), circulation fan (5) and damper device (4), for receiving the control signal to control the driving switch of the corresponding control object. In the control signal drive circuit (10), the voltage at the I / O terminal is very small, and is amplified by a photoelectric coupling signal amplifier circuit, and the amplified signal is transmitted to the I / O drive circuit to drive the solid-state relay, which is controlled by the solid-state relay The switch ...

Embodiment 3

[0028] Embodiment 3: see Figure 5~Figure 9 , the oven temperature and humidity control method based on two-dimensional space 3-D fuzzy control, using the above system to operate, is characterized in that the specific operation steps are as follows:

[0029]1) Two-dimensional space 3-D fuzzy controller design: Similar to the traditional fuzzy controller structure, the two-dimensional space 3-D fuzzy controller consists of three parts: space fuzzification, 3-D fuzzy rule reasoning and defuzzification. The specific steps of the two-dimensional space 3-D fuzzy controller are as follows: first, collect data from the space area, that is, the temperature and humidity sensors are arranged in a two-dimensional plane in the oven, so the collected temperature and humidity data reflect the The information on the spatial plane is different from the previous one-dimensional linear distribution. It is converted into a fuzzy input that can represent spatial information through the spatial fu...

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Abstract

The invention relates to a baking oven temperature and humidity control system and method based on two-dimensional space 3-D fuzzy control. A baking oven system is composed of three parts including a two-dimensional space 3-D fuzzy controller on a PC, a control signal driving circuit, and a baking oven body. The innovation of the invention is that the temperature and humidity controller of the baking oven is designed by using a two-dimensional space 3-D fuzzy control method. Spatial positional information is integrated into a 3-D fuzzy control algorithm so that the 3-D fuzzy control algorithm has advantages in controlling a spatial distribution system. The two-dimensional space 3-D fuzzy control method expands the 3-D fuzzy control from a spot or a line previously to a surface, solves a problem that a conventional lumped control algorithm cannot well control the spatial distribution system, and achieves uniform baking oven temperature and humidity spatial distribution.

Description

technical field [0001] The invention relates to a temperature and humidity fuzzy control system and method thereof, in particular to a temperature and humidity control system and method of a baking oven based on two-dimensional space 3-D fuzzy control. Background technique [0002] The oven is a relatively sealed space system, which will inevitably involve some problems of space characteristics. The spatial system not only involves nonlinearity, large lag, time-varying, strong coupling, etc., but also has strong spatial distribution characteristics, which means that the input, output and state of the system are not only related to time, but also affected by space. For such a system with spatial characteristics, we call it a spatial distribution system. At present, the temperature and humidity control of the oven generally uses the PID control method, but with the research and application of intelligent control methods, intelligent algorithms such as expert systems, fuzzy co...

Claims

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Application Information

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IPC IPC(8): G05D23/22
Inventor 张宪霞张炳飞秦磊付志强
Owner SHANGHAI UNIV
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