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Design and Implementation of Embedded Pulse Width Modulation Controller

Author: WangXiuQin
Tutor: ShenGang
School: Huazhong University of Science and Technology
Course: Software Engineering
Keywords: Digital Signal Processor Sinusoidal pulse width modulation Control system Communication protocol
CLC: TP273.5
Type: Master's thesis
Year: 2010
Downloads: 76
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Abstract


The field of digital signal processor (DSP) technology is one of the most popular areas of technology in today's electronic power industry . In recent years, the emergence of a large number of integrated performance DSP devices , making use of DSP , especially in the low-end products more widely . Microcontroller , microcontroller and other devices as the core electronic power controller because the specific shortcomings of the external analog circuit , the control performance is poor, poor anti-interference ability , low accuracy . DSP devices with a short development cycle, highly integrated, real-time, and other prominent advantages , and its higher cost , which makes it possible to meet the power electronic devices control requirements of the universal controller implementation possible . The pulse width modulation (PWM) is widely used and very important electronic power control technology, to improve the performance of electronic power device , to promote the development of power electronics technology has a huge role in promoting . Among them, the sinusoidal pulse width modulation ( SPWM ) is the most widely used PWM technology . TMS320F2812 chip , the system uses the serial interface communication mode , Microwire communication protocol serial interface communication DSP board and IPC . Through the PCI bus switch signal fed to the F2812 Circuit , according to the needs of the actual control system for the various operating parameters of the calculation F2812 , F2812 internal processing, output pulse width modulated signal . In the system design , build type TMS320F2812 32-bit fixed-point DSP as the control center of the control hardware , system software development and DSP development platform . Conducted intensive studies in order to achieve real-time requirements of the system on the output of the PWM signal , the DSP programming and waveform generation algorithm , the use of the modification of the rules of sampling algorithm generating meet the requirements waveform of the control system . The system debugging results show that the design of DSP-based embedded pulse width modulation control system is stable , and provides a good foundation for the future industrial control applications .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system > Computer control, computer control system
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