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Research and design of the new refrigerator door motion controller

Author: WeiYingJie
Tutor: ZhangWei
School: Nanjing University of Technology and Engineering
Course: Mechanical Manufacturing and Automation
Keywords: Cold storage doors Motion controller Fuzzy Neural Network Control Direct Torque Fangga Digital Signal Processor
CLC: TP273
Type: Master's thesis
Year: 2009
Downloads: 88
Quote: 2
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Abstract


Cold storage doors motion controller design is the key to determine the overall performance of the cold storage door products , is one of the core technology of industrial the door production enterprises to enhance its competitiveness . Jiangsu Province Haimen snow shield refrigeration equipment Co., Ltd. and Nanjing University of Science and Technology research cooperation as the background , can not accurately control the door speed controller for the original cold storage doors , effective anti-trap section is too narrow and the man-machine interface . improve other aspects of the lack of improved cold storage door controller design . Original refrigerator door drive motor control , anti-trap method and some of the hardware and software of the interface circuit to improve the design . First, the proposed fuzzy neural network - based drive motor direct torque control programs , and through its traditional direct torque control method Matlab / Simulink simulation results compare theoretically verify that the program can achieve accurate and fast speed control, and having a smaller torque ripple . Secondly, based on the basic motor stator current detection anti-pinch method proposed a multi-point upper limit of the current real-time interpolation Fangga program expanded cold storage door anti-pinch section , and also increase the mechanical anti-pinch structure on this basis , so that more safe and reliable operation of the refrigerator door . Further, according to the needs of the new control program , completed more improved design of the system hardware and software . DSP-based motion controller hardware circuit to improve the design , such as : buttons and knob interface circuit the stator current detection circuit and communications interface circuits . Completion of the C language programming of various control software modules , such as the switch door motion control module , motor control module and system interrupt module . Finally, through on-site commissioning , validation and accurate control of the system can be realized to door speed , the closed Fangga markedly reduce the man - machine interface functions to make the system run more convenient and flexible , these indicate that cold storage doors run performance must improve .

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