高甜甜孙瑜徐方建邵勇(南京理工大学自动化学院,江苏 南京 210094)摘要影响电动车成本和性能最重要的因素有:控制器、电机、蓄电池。 以 STM8S903K3 为主控芯片,设计出一款用于控制无位置传感器无刷直流电机的纯电动车控制器来降低电机成本、 提高控制器稳定性。 首先给出电动车控制系统总体结构框图,然后详细讲解了系统主要模块的电路原理图和软件流程图。通过软硬件结合法来确定无位置传感器无刷直流电机换相时刻。 在雅迪电动车上的测试结果证明该控制器能很好的控制无位置传感器无刷直流电机的运转。关键词:电动车控制器,STM8S903K3,无位置传感器无刷直流电机,低成本AbstractControIIer,motor and battery are most important factors that decide eIectric vehicIe's cost and performance.Based onSTM8S903K3 as main controI chip,this paper designs a pure eIectric vehicIe controIIer that can controI the senseIessbrushIess DC motor to reduce the cost of motor and improve the stabiIity of the controIIer.FirstIy,the paper shows a bIockdiagram of the overaII controI system of the eIectric vehicIe.Then the paper expIains in detaiI the circuit diagram of themain moduIes and software fIow chart.Through the method of a combination of hardware and software to determine thesenseIess brushIess DC motor commutation time.Keywords:eIectric vehicIe controIIer,STM8S903K3,the senseIess brushIess DC motor,Iow cost