IQ math在双体船航行控制器设计中的应用

摘要

The computational fluid dynamics ( CFD) was employed to study the thermal performance of the heat-removal system of some EMU ground power supply single phrase power box inverter unit when it's working steadily in IGBT module and the rectifier diode module.The structure of inverter unit was improved with the theoretical knowledge of heat transfer theory and fluid dynamics.The simulation analysis shows that the improvement can effectively enhance the heat dissipation effect.%在一个采样周期内，控制器需要完成控制信号生成、串口通信，以及网口通信等一系列任务，其中包括大量复杂的浮点运算。控制器选用了定点型DSP芯片，利用TI公司提供的IQmath函数库，可以在定点DSP上更快地完成浮点运算，以便DSP在采样周期内能够迅速完成任务。仿真结果表明，利用IQmath可以提高DSP运算速度，优化DSP控制器。