Quality Product Sharing Platform
The haracteristics of torque motor
  • 08 Oct, 2021
  • Posts by : Raiseway
The haracteristics of torque motor
AC torque motors are divided into single-phase and three-phase. They are derived from the basic series of single-phase induction motors and three-phase induction motors. The structure and installation dimensions are consistent with the basic series. The difference is that the rotor guide bar usually uses materials with higher resistivity, such as brass, pure copper, copper-manganese alloy, etc. The rotor resistance is much larger than that of ordinary induction motors, so its mechanical characteristics are significantly different from ordinary induction motors.The rotor resistance of the AC torque motor is large, so that the slip rate corresponding to the maximum torque is 1, that is, the maximum torque appears at the stall point.
Torque motors are characterized by soft mechanical characteristics and can be locked. When the load torque increases, it can automatically reduce the speed and increase the output torque. When the load torque is a certain value, the speed can be adjusted by changing the motor terminal voltage, but the speed adjustment rate is not good. Therefore, a speed measuring device is added to the motor shaft, with a controller, and the voltage output by the speed measuring device is compared with the voltage given by the controller to automatically adjust the terminal voltage of the motor to stabilize the motor.
Torque motor has the characteristics of low speed, large torque, strong overload capacity, fast response, good characteristic linearity, small torque fluctuation, etc. It can directly drive the load without reducing the transmission gear, thereby improving the operating accuracy of the system.
The non-linearity of mechanical characteristics is an important indicator of AC torque motors. The non-linearity is mainly related to the rotor resistance. The larger the rotor resistance, the smaller the non-linearity, which is generally controlled within 30%.
torque motor supply


torque motor supply

Hot News