Which is better, stepper motor or servo motor? The difference between stepper motor and servo motor

What are stepper motors and servo motors

Stepper motors and servo motors are both common types of motors, and they have different working principles and applications.

A stepper motor is a motor that rotates at a fixed angle. Its rotation is achieved according to the pulse signal provided by the outside. Stepper motors have the characteristics of high precision, simple control, and suitable for low-speed movement. They are suitable for occasions that require high-precision positioning control, such as printing machines, plotters, digital cameras, etc.

A servo motor is a motor based on feedback control. It uses sensors to monitor and feedback parameters such as rotor position, speed, torque, etc. in real time, and controls the motor rotation according to the controller's instructions. Servo motors are suitable for situations that require high-speed and high-precision motion control, such as machine tools, automated production lines, robots, etc.

In general, stepper motors are suitable for situations that require precise positioning and low-speed motion control, while servo motors are suitable for situations that require high-speed, high-precision, and complex motion control. You need to choose one based on the specific application and needs.

Which is better, stepper motor or servo motor?

Stepper motors and servo motors each have their own advantages and disadvantages. It is more appropriate to choose the corresponding motor according to different application scenarios and needs.

The advantages of stepper motors are: high positioning accuracy, simple control, low price, etc. Stepper motors can be precisely positioned according to pulse signal control, and are suitable for occasions that require high precision and low speed operation, such as printing presses, plotters, etc. At the same time, the price of stepper motors is relatively low, which is suitable for use in situations with limited costs.

The advantages of servo motors are: wide speed range, fast response, high precision, strong load capacity, etc. Servo motors achieve precise position, speed and torque control through feedback control, and are suitable for high-speed, high-precision motion control, such as machine tools, automated production lines, robots, etc. At the same time, servo motors have strong load capacity and response speed, and can adapt to more complex control requirements.

Therefore, the motor to be selected should be selected according to the specific application and requirements. If high precision, low speed operation and limited cost are required, a stepper motor can be selected; if high speed, high precision, fast response speed and high control accuracy are required, a servo motor can be selected.

Differences between stepper motors and servo motors

Stepper motors and servo motors are two different types of motors, and their main differences lie in their working principles, control methods, and performance characteristics.

The working principles are different: the stepper motor achieves precise stepping motion of the rotor by sequentially stimulating each phase winding in the stator, while the servo motor achieves high-precision motion by precisely controlling the rotor position, speed, and acceleration.

Different control methods: The control method of stepper motors is relatively simple, and only requires controlling the excitation signal of the stator winding, which can be achieved through controllers such as microcontrollers and PLCs. However, servo motors require more complex control systems to achieve high-precision position, speed and acceleration control, and usually require the use of specialized servo controllers and encoders and other supporting equipment.

Different performance characteristics: Stepper motors usually have higher torque and lower speed, which can achieve precise positioning control, but the accuracy and speed range are relatively narrow. Servo motors can achieve higher accuracy, speed and acceleration, and are widely used in high-precision applications such as robots and automation equipment.

In general, stepper motors and servo motors have their own advantages and disadvantages in different application scenarios, and the appropriate motor type needs to be selected according to specific application requirements.