基于DSP交流同步电机控制器设计与实现硬件部分+电路图
毕业论文关键词：永磁同步电动机；坐标变换；控制板设计与调试；SIMULINK 仿真
Title DSP-based PMSM controller design--part of hardware
Abstract PMSMs are widely used in speed control area because they are small, light, with very low loss and high power. However, compared with dc motors, PMSMs have a much more complex mathematical model. Therefore, it is very important to study the control strategy of PMSMs. The author has done a detailed study on the structure of PMSMs and got three mathematical models based on three coordinate systems. What’s more, a much more simplified formula of electromagnetic torque has been achieved. Based on this formula, the paper gives a specification on how to control the rotate speed and also gives a detailed explanation about the SVPWM theory. An overall block diagram of hardware is built based on the requirements for speed control, and a control panel based on TMS320F2812 is designed. Detailed steps of design are given in this paper. What’s more, some important functions of the panel have been tested and the reliability of this panel is proved. Meanwhile, for validating the control strategy adopted in this design, SIMULINK is used as the simulation tool. Based on a good knowledge of all blocks used in SVPWM, an overall control system is built and it is tested on no-load and with-load conditions. With wave forms generated in this simulation, the practical effect of the SVPWM control strategy is analyzed.
Keywords: PMSM; SVPWM; DSP; SIMULINK simulation
目次.I
1绪论..1
1.1本论文的背景和意义1
1.2本论文的主要方法和研究进展.2
1.3本论文的主要内容..2
1.4本论文的结构安排..3
2PMSM控制理论4
2.1永磁同步电动机的等效数学模型4
2.1.1等效原则4
2.1.2A-B-C三相坐标系..4
2.1.3α-β坐标系5
2.1.4d-q旋转坐标系.6
2.1.5旋转坐标系下的电磁转矩.7
2.2SVPWM空间矢量控制策略.7
2.2.1控制对象描述..7
2.2.2基本空间矢量..8
2.2.3等效原则9
2.2.4扇区判断..10
2.3双闭环控制策略.10
2.4本章小结.11
3硬件电路设计..12
3.1硬件整体框架及指标分析..12
3.2控制板电路设计.13
3.2.1DSP芯片13
3.2.2控制电源电路.14
3.2.3外部时钟源电路..15
3.2.4JTAG仿真器接口电路.15
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