直流力矩电机作为一种执行元件,具有下面一系列特点:输出力矩大、过载能力强,控制精度高。它可直接带动机械负载,不需要经过齿轮传动,所以能消除齿隙误差和由于齿隙存在而造成的“死区”。由于电机直接与负载连接,电机轴径粗,传动链短,因此机械耦合刚度大,摩擦力矩小,系统的“死区”小。这也就使得机械共振频率高,系统的频带可以做得较宽,系统的动态性能可以做得很好。再加上特殊的磁路设计等等因素,使 DC torque motor as an executive component, has the following series of features: large output torque, overload capacity, high control accuracy. It can directly drive the mechanical load, without the need for gear transmission, so to eliminate backlash error and due to the presence of backlash “dead zone.” As the motor is directly connected with the load, the motor shaft diameter is thick, the drive chain is short, so the mechanical coupling stiffness, friction torque is small, the system’s “dead zone” small. This also makes the mechanical resonance frequency is high, the system’s frequency band can be made wider, the system’s dynamic performance can be done well. Coupled with the special magnetic circuit design and so on, so