设计了一种以STM32为主控芯片,基于改进型磁场定向控制(Magnetic Field Oriented Control,FOC)的电机控制系统。该系统采用的CAN总线控制,具有自动检测错误和修复功能,减少布线,有效降低控制系统的故障率,实现控制系统内部模块之间的复...设计了一种以STM32为主控芯片,基于改进型磁场定向控制(Magnetic Field Oriented Control,FOC)的电机控制系统。该系统采用的CAN总线控制,具有自动检测错误和修复功能,减少布线,有效降低控制系统的故障率,实现控制系统内部模块之间的复杂通讯和电机之间的交流。运用FOC矢量控制算法来控制电机的运转,选择霍尔传感器作为FOC的位置传感器,来获取转子的角度信息和速度信息,经过Clarke变换、Park变换、Park逆变换后输出轴与轴的电压传输给逆变电桥,进行矢量脉宽调制,驱动电机转动,最终实现系统的精准控制,其中基于自抗干扰控制(Active Disturbance Rejection Control,ADRC)算法代替了传统的PI速度控制环,只保留了PI电流环。控制系统中还加入了预充电和故障处理检测功能,实时检测高压安全状况,在功率管发生短路等故障情况时可及时采取保护措施,实现最大程度保护控制器和操作人员的安全。该控制系统具有较好的现实性以及适用性。展开更多
Rotor time constant is an important parameter for the indirect lleld oraentateO control of mauc- tion motor. Incorrect rotor tittle constant value will cause the flux observer generating a wrong angu- lar orientation ...Rotor time constant is an important parameter for the indirect lleld oraentateO control of mauc- tion motor. Incorrect rotor tittle constant value will cause the flux observer generating a wrong angu- lar orientation of the rotor field. A new approach serves for rotor time constant on-line adaptation by setting the stator current to be zero for a short period. A smooth eorrector is designed to prevent ab- normal detection result from making adaptation. Impact of zero current duration on detection error and rotor speed is analyzed by experiments.展开更多
基金Supported by the National Natural Science Foundation of China(No.51276016)the Fundamental Research Funds for the Central University(No.FRF-TP-12-059A)
文摘Rotor time constant is an important parameter for the indirect lleld oraentateO control of mauc- tion motor. Incorrect rotor tittle constant value will cause the flux observer generating a wrong angu- lar orientation of the rotor field. A new approach serves for rotor time constant on-line adaptation by setting the stator current to be zero for a short period. A smooth eorrector is designed to prevent ab- normal detection result from making adaptation. Impact of zero current duration on detection error and rotor speed is analyzed by experiments.
