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Cocoon drying the automatic control system of fuzzy control technology

Author: GuanPing
Tutor: XieShouYong；ZhuShiPing
School: Southwestern University
Course: Agricultural Mechanization Engineering
Keywords: Cocoon drying Fuzzy Control AT89S51 microcontroller Temperature control
CLC: S887.33
Type: Master's thesis
Year: 2007
Downloads: 130
Quote: 0
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Abstract


For the current control in the cocoon drying process method problem of uneven distribution and temperature , and to cocoon the temperature variation during the drying process is based on the design of the automatic control system of a novel cocoon sulfate . The entire system requires temperature fluctuation range ± 10 ℃ , plus manual traditional thermal instrumentation alone can not be achieved , therefore , developed automatic control system adapted to the cocoon dry . ATMEL Corporation AT89S51 microcontroller as the core of the control system , the hardware components , supplemented by peripheral interface circuit to achieve the automated control of the entire system . The control system has a simple structure , high reliability and investment . Control method , the field of temperature control the use of the PID control method , but the conventional PID regulator is difficult to achieve the desired temperature control accuracy requirements , and PID control different PID parameters of the different temperature control object , and the adjustment is not convenient drawbacks. In this paper, fuzzy control method to control it , the analog control behavior using the experience and knowledge of the people achieve an expert nonlinear control . Entire control is completed by a fuzzy controller , the article discusses the rate of change of temperature deviations and temperature deviation input heat vent output dual- input single- output fuzzy controller design method , in order to improve the accuracy of the system 's control , security and reliability. In addition , the article also details the system hardware and software design principles and the principle of fuzzy control . Proof of actual use , the indicators have reached the design requirements , the system is stable, reliable , has good control effect .

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CLC: > Agricultural Sciences > Livestock, animal medicine,hunting,silkworm,bee > Sericulture > The sericulture building facilities and sericulture equipment > Sericulture equipment > Silkworm cocoon collection and drying equipment
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