The Servo motor refers to the engine that controls the operation of mechanical components in the servo system. It can convert the voltage signal into torque and speed to drive the control object, closed-loop control, can control the speed, and accurately position. The rotor speed of the servo motor is controlled by the input signal and can respond quickly. Because of its small electromechanical time constant, high linearity, and starting voltage, it is used as an executive element in the automatic control system. The signal is converted into angular displacement or angular velocity output on the motor shaft.
The rotor inside the servo motor is a permanent magnet. The U/V/W three-phase electricity controlled by the driver forms an electromagnetic field. The rotor rotates under the action of this magnetic field. At the same time, the encoder that comes with the motor feeds back the signal to the driver. Values are compared, and the angle of rotation of the rotor is adjusted. The accuracy of the servo motor is determined by the accuracy (number of lines) of the encoder.
According to the characteristics of servo motors, they are generally used in equipment that requires relatively high process accuracy, processing efficiency, and work reliability, such as machine tools, printing equipment, packaging equipment, textile equipment, laser processing equipment, robots, and automated production lines. etc.
High requirements correspond to high testing standards. The testing of servo motors is higher than that of general AC motors. Servo motors are composed of three parts: stator, permanent magnet rotor, and motor, which correspond to different types of testing equipment. AIP is committed to providing one-stop motor test solutions. The servo motor test solutions include motor stator test system, motor rotor test system, motor no-load test system, motor load test system, and dynamometer intelligence test system.
AIP focuses on global motor testing and cooperates with many domestic servo motor manufacturers. AIP has developed a unique detection method for servo motor control signal, Hall and back EMF, load and other performance, helping enterprises to efficiently control production quality; informatization data docking ranks first in the industry, connecting the test module with the production system, Cooperate with the intelligent management of enterprises. A strong R&D team is the guarantee for the continuous upgrading and optimization of AIP's technology. A professional sales and after-sales team is the guarantee of AIP's high-quality services. Customer-centricity is AIP's consistent service concept. Choosing AIP means choosing peace of mind.
A servo motor is a motor that allows precise control of angle, speed, and torque and consists of a fitted motor and a position sensor that regulates the motion of the motor through a controller. Servo motors are widely used in industrial applications such as robotics, CNC machine tools, and automated manufacturing, where high precision, fast response, and smooth motion are required.
Servo motors work by using a controller that receives two input signals: a setup signal indicating the desired output shaft position, speed, or torque, and a feedback signal indicating the actual output shaft position, speed, or torque as measured by a sensor. The controller compares these two signals and calculates an error signal indicating the difference between them. The error signal is processed by a control algorithm (e.g., PID) to generate a control signal that determines how much voltage or current to apply to the motor. The controller uses a closed-loop feedback system to regulate the motion of the motor to make sure it matches the desired value.
The difference between a servo motor and a DC motor is mainly whether they have position feedback and a controller. A DC motor is a type of motor that converts direct current into rotary motion. It does not have position feedback and a controller, and can only regulate speed and direction by changing the input voltage or resistance. A servo motor is a motor that converts DC or AC power into rotary motion. It has position feedback and a controller and can adjust position, speed, and torque by changing the input voltage or current.
Servo motors can be categorized into the following three types based on their structure and working principle:
■ Induction servo motors
■ Permanent magnet servo motors
■ Switched reluctance servomotors
Servomotors can be either alternating current (AC) or direct current (DC), depending on what kind of input power supply and driver they use. Generally speaking, alternating current (AC) servo motors are more common than direct current (DC) servo motors because the AC power supply is easier to obtain and control, and because AC drives are simpler and cheaper. However, DC (direct current) servo motors also have their advantages and needs in special applications such as solar power, remote control, and variable speed regulation.