| Compared with traditional EMS, the high-temperature superconductive hybrid EMS has following advantages, reducing energy consumption, increasing suspension gap and saving cost. It has been attracting a lot of scholars to begin to study this new kind technology in maglev field. Based on this background, and supported by State Natural Science Fund "Research of high-temperature superconductive hybrid Maglev System", the writer joined the research, and had done some work on it.Taking the controller of high-temperature superconductive hybrid Maglev System as main research object, this paper mainly refers to the work on researching hybrid maglev control strategy and realizing controller hardware platform structures. It has several sections as follow.1.Analysing the principle of high-temperature superconductive hybrid EMS, Establishing math models for high-temperature superconductive hybrid Maglev System, including relative dynamic model and absolute dynamic model. Based on relative dynamic model, we derived voltage-motion equation and electromagnetic force equation of hybrid electromagnet.2. Presenting two control strategies: traditional PID control, fuzzy-PID control, discussing the two control strategies on control theory, controller design, simulation analysis, and other aspects. At last bring forwarded further improvement for two control strategies.3. Choosing TI's new DSP-TMS320F2812, which are embedded to system to achieve dual DSP maglev controller. Introducing the implementation process of maglev control hardware modules, including: signal pre-processing circuit, A/D Converter circuit, PWM circuit. Next, introducing system communication hardware design, including: RS-232, RS-485, ECAN network and communication between two DSPs.4. Software module design for hybrid maglev system, including: initialization module, control algorithm module, digital signal filtering module, A/ D converting module, PWM module and communications module. |
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