电动机的工作原理
Working principle of motor
电动机是把电能转换成机械能的设备。在机械、冶金、石油、煤炭、化学、航空、交通、农业以及其他各种工业中，电动机被广泛地应用着。随着工业自动化程度不断提高，需要采用各种各样的控制电机作为自动化系统的元件，人造卫星的自动控制系统中，电机也是不可缺少的。此外在国防、文教、医疗及日常生活中(现代化的家电工业中)电动机也愈来愈广泛地应用起来。
A motor is a device that converts electrical energy into mechanical energy. Motors are widely used in machinery, metallurgy, petroleum, coal, chemistry, aviation, transportation, agriculture and other industries. With the continuous improvement of industrial automation, a variety of control motors are needed as the components of the automation system. In the automatic control system of artificial satellite, motors are also indispensable. In addition, electric motors are more and more widely used in national defense, culture and education, medical treatment and daily life (in modern household electrical appliances industry