摘要
针对轴向三自由度被动、径向两自由度主动控制的主被动磁悬浮飞轮的低功耗、高可靠、一体化需求,对其控制器进行了一体化设计。首先,建立了主动磁轴承的数学模型,并选择合适的控制策略。在此基础上,提出一种以DSP+FPGA为核心,包含信号调理、外部存储、驱动及功放模块的一体化集成数字控制系统,并对其进行实验验证。实验结果表明,飞轮在静态悬浮时,转子径向跳动量为70 mV左右,约为保护间隙(峰-峰值约8 V)8.7%;加速至额定转速时,转子跳动量为1.2 V左右,约为保护间隙的15%左右,磁悬浮飞轮以额定转速工作时磁轴承系统功耗为5.5 W,满足飞轮性能要求。
In the light of the demands for a low power consumption,high reliable and integrated driving and driven magnetically levitated flywheel with a driven control in three degrees of freedom along the axial direction and a driving control in two degrees of freedom along the radial direction,integrated and designed was its controller.Firstly,a mathematical model was established for the driving magnetic bearing with proper control tactics being chosen.On this basis,an integrated digital control system with DSP+FPGA serving as the core,including a signal modulation,outer storage,driving and power amplification module,was presented and experimentally verified.The test results show that when the flywheel is levitated in a static state,the radial runout of the rotor is around 70 mV,about 8.7% of the protection clearance(the peak-peak value is about 8 V).When the flywheel is accelerated to its rated speed,the radial runout of the rotor is around 1.2 V,around 15% of the protection clearance.When operating at the rated speed,the power consumption of the magnetic bearing system of the magnetically levitated flywheel is only 5.5 W,thus meeting the requirements for the performance of the flywheel.
出处
《热能动力工程》
CAS
CSCD
北大核心
2011年第6期756-759,779-780,共4页
Journal of Engineering for Thermal Energy and Power
关键词
主被动磁悬浮飞轮
磁轴承
一体化控制器
DSP
FPGA
driving and driven magnetic levitated flywheel,magnetic bearing,integrated controller,DSP(digital signal processing),FPGA(Field-programmable gate array)
