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Development of Intelligent Temperature Controller

Author: FuYongYi
Tutor: LiBin
School: Wuhan University of Technology
Course: Control Theory and Control Engineering
Keywords: Temperature Control Nine-point controller C8051F020 Embedded Resistance furnace
CLC: TP216
Type: Master's thesis
Year: 2006
Downloads: 752
Quote: 5
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Abstract


Have greater resistance furnace is a pure delay and the time constant of the temperature object, in the past usually digitally controlled or continuous control, generally control the quality is not high, such as large overshoot, settling time and long. In order to improve the quality of resistance furnace temperature control, this paper focuses on the following aspects. First, this thesis, a new type of intelligent control technology, based on this technology controller called nine-point controller. Nine controller's control strategy is based on the working conditions of system operation (referred to working conditions) to determine, the system is running in nine conditions, each of which corresponds to one kind of condition nine controller proportional control, so there the proportion of nine different control parameters. Ratio control in practical applications in a simple and easy access to system conditions, respectively, the nine-point controller tuning parameters can be one or more of such a system the best performance, which can achieve the best overall system performance. Hardware in the system, the design of the sensor and conditioning circuit as platinum resistance temperature control system provides temperature signal to the A / D converted into digital signals into C8051F020 microcontroller, by micro-controller and the interface circuit, the temperature signal display, judgment, decision making and control. Proper control of the final output of the system volume drive system actuators - Adjustable pulse control thyristor circuits. SCR power through the controlled object resistance furnace heating system to achieve the controlled object resistance furnace temperature control system in order to achieve the required accuracy. Also in the software, designed with C8051F020 MCU as the core of embedded systems, and is equipped with a keyboard and LCD composed of small operating system, enabling signal conditioning, data acquisition, data display, keyboard control, data and other functions, described in detail the hardware circuit and software design. This thesis focuses its efforts on the combination of theory and engineering practice, and in this development process to obtain more comprehensive information and data, accumulated production experience. Meanwhile, the temperature control algorithm to achieve intelligent control, and the control system has a simple circuit structure, easy to use, measurement and control of high precision, stable and reliable, cost advantages, as similar resistance furnace temperature control research has laid a good foundation.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Automatic testing equipment,instruments
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