| Digital signal processor (DSP) technology is one of the hottest areas in today's electronics industry.In recent years, a large number of integrated DSP devices, making the use of DSP, especially in the low-end product applications, more and more widely. Affected by the shortcomings of the external analog circuit-specific, micro-controller or microcontroller has poor performance on applicantion with control, while DSP device make it possilbe to meet the control requirements of power electronic devices to achieve a common controller due to its short development cycle, high integration, real-time good, and so highlight the advantages.As widely used and important electronic power control technology, Pulse-Width Modulation(PWM) has a tremendous impetus on development of electronic power technology.Sinusoidal Pulse Width Modulation (SPWM) is the most widely used PWM technique.For the TMS320F2812 chip, the system uses the serial interface communication mode, using Microwire communication protocols, DSP board and the IPC of the serial interface communication.Through the PCI bus, the amount of signal transmission to the F2812 switch chip, based on the actual control systems need to calculate the various operating parameters F2812, F2812, after internal processing, the output pulse-width modulated signals needed.In the system design, in order to build a 32-bit fixed-point TMS320F2812-based DSP for the control of the control of the core hardware system, and DSP development platforms to complete the system for all software development. In order to achieve the system the output of the PWM signal real-time requirements, DSP programming, and to generate waveforms in-depth study of algorithms, using the rules of sampling algorithm modified to meet the control system requirements generated waveforms. System, the FBI test results show that the design of embedded DSP-based pulse-width modulation control system is running stable for the future of industrial control applications provide a good foundation. |
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