Do you know the classification of control motors?

Control motors can be categorized into different types based on their functionality and application. The classification includes servo motors, stepper motors, torque motors, switched reluctance motors, and brushless DC motors.

1. Servo Motors

Servo motors are extensively used in control systems for precise speed and position control. They convert input voltage signals into mechanical output, allowing controlled components to be manipulated. Servo motors are available in both DC and AC variants, with AC permanent magnet synchronous and DC brushless motors being commonly used.

2. Stepper Motors

Stepper motors translate electrical pulses into angular displacement. By controlling the number of pulses, precise positioning, speed regulation, and acceleration can be achieved. Common types of stepper motors include reactive stepper motors, permanent magnet stepper motors, hybrid stepper motors, and single-phase stepper motors.

3. Torque Motors

Torque motors are flat multi-pole permanent magnet DC motors designed to minimize torque and speed pulsations. They exhibit a good response and their output torque is proportional to the input current, regardless of rotor speed or position. Torque motors can operate at low speeds without the need for gear reduction, providing a high torque-to-inertia ratio.

4. Switched Reluctance Motors

Switched reluctance motors feature a simple and robust structure, low cost, and excellent speed regulation performance. They are a competitive alternative to traditional control motors, although they may exhibit torque pulsation, noise, and vibration which require optimization and improvement for practical applications.

5. Brushless DC Motors

Derived from brushed DC motors, brushless DC motors rely on AC drive current. They can be classified into brushless speed motors and brushless torque motors. The drive currents for brushless motors can be trapezoidal waves (commonly referred to as "square waves") or sine waves. Brushless DC motors are compact and lightweight compared to brushed DC motors, with reduced moment of inertia. Their capacities typically fall below 100kW.

These classifications provide a comprehensive breakdown of control motors, each serving specific functions across various industries and applications.