The difference between steering gear and motor is mainly reflected in the following aspects:
1. Working principle:
The motor uses the Lorentz force exerted by the magnetic field and current on the conductor to convert electrical energy into mechanical energy, thereby driving the motor to rotate.
The steering gear adjusts the output angle and speed through an internal micro-servo system, converting electrical signals into mechanical rotation.
2. Control method:
The motor outputs speed, and the external control circuit adjusts the voltage and current to control the motor's speed and direction.
The servo can control position control with higher precision. By inputting a specific PWM signal, the servo can output a rotation reaching a precise angle, which is more suitable for applications that require precise control.
3.Application fields:
Motors are mainly used in applications that require large amounts of output power, such as power tools, automobiles, elevators, etc.
Steering gear is mainly used in situations that require precise control, such as robots, aircraft models, car models, etc.
4. Structure:
The steering gear is composed of a DC motor, a motor controller, a potentiometer, a reducer, etc., and is a servo unit that is encapsulated in a shell that is easy to install. The steering gear is equipped with a potentiometer (or angle sensor) to detect the rotation angle of the output shaft. The control board controls and adjusts the angle of the output shaft based on the information from the potentiometer (or angle sensor), forming a closed-loop control system.
It should be noted that the classification of servos and motors is not absolute. Some products may be sold in the name of servos, but they are actually a type of motor, such as brushless motor servos. Therefore, when purchasing such products, read the product manual carefully to understand its product characteristics and scope of application.