Servo motor parameters

by:V&T Technologies     2020-01-21
Servo motor parameters what are the important parameters of servo motor? Which parameters of servo motor should be set? How to set parameters for servo motor? Stepping Motor manufacturer ruite takes everyone to answer questions and hopes to be helpful to everyone's work and is used as a micro-special motor for executive elements in automatic control devices. Also known as the executive motor. Its function is to convert electrical signals into angular displacement or angular velocity of the rotating shaft. Servo motors are divided into AC and DC. The working principle of AC servo motor is the same as that of AC induction motor. There are two phase space displacements of 90 on the stator. The excitation winding Wf and the control winding WcoWf of the electrical angle are connected with a constant AC voltage, and the change of AC voltage or phase applied to Wc is used to control the operation of the motor. AC servo motor has strict nonlinearity indexes of stable operation, good controllability, fast response, high sensitivity and mechanical characteristics and adjustment characteristics ( Requirements are less than 10% ~ 15% and below 15% ~ 25%)And other characteristics. The working principle of DC servo motor is the same as that of common DC motor. Motor speed n is n = E/K1j = (Ua-IaRa)In/K1j formula, E is armature back electromotive force; K is a constant; J is the magnetic flux per pole; Ua, Ia are armature voltage and armature current; Ra is the armature resistance. Change Ua or change & phi; , Can control the speed of DC servo motor, but generally use the method of controlling armature voltage. In permanent magnet DC servo motor, the excitation winding is replaced by permanent magnet, magnetic flux & phi; Constant. DC servo motor has good linear regulation characteristics and fast time response. Servo Motor Servo: The word comes from Greek'Slave'Meaning. People want to put'Servo mechanism' Be a handy taming tool and act according to the requirements of the control signal. Before the signal arrives, the rotor is still; After the signal arrives, the rotor rotates immediately; When the signal disappears, the rotor can stop itself immediately. Because of its'Servo'Performance, hence the name. Servo motors are generally divided into DC servo and AC servo. For DC servo motor, advantages: accurate speed control, hard torque and speed characteristics, simple principle, convenient use, price advantage, disadvantages: brush commutation, speed limit, additional resistance, produce wear particles (For a clean room) For AC servo motor, advantages: good speed control characteristics, smooth control in the whole speed zone, almost no oscillation; High efficiency, more than 90%, no fever; High speed control; High precision position control (Depending on which encoder); Constant torque is realized in the rated operation area; Low Noise; No brush wear, maintenance-free; No wear particles, no sparks, suitable for dust-free and explosive environments with low inertia; Disadvantages: The control is more complicated, the driver parameters need to be adjusted on site, PID parameters need more connections, the application of DC servo motor, the characteristics of DC servo motor are harder than AC servo motor. It is usually applied to systems with slightly higher power, such as position control in follow-up systems. For the application of AC servo motor, the output power of AC servo motor is generally 0. 1- 100 W, power frequency is divided into 50Hz, 400Hz, etc. It is widely used, such as in various automatic control, automatic recording and other systems, Related reading: stepper motor driver parameter setting, DC servo motor principle TAG servo motor parameters
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