The use of permanent magnet servo motor

Working principle diagram of permanent magnet servo motor working principle of servo motor: the rotor inside the servo motor is a permanent magnet, driving the U / V / W three-phase electric field controlled by 7a64e78988e69d8331333433623739 device, the rotor rotates under the action of this magnetic field, at the same time, the encoder feedback signal of the motor is sent to the driver, the driver compares the feedback value with the target value, adjusts the rotation The angle of rotation of the child.

1. Permanent magnet AC servo system has the following advantages: (1) no brush commutator, reliable operation, simple maintenance; (2) fast cooling of stator winding; (3) small inertia, easy to improve the rapidity of the system; (4) suitable for high-speed large torque working state; (5) small volume weight under the same power, widely used in machine tools, mechanical equipment, moving Transportation mechanism, printing equipment, assembly robot, processing machinery, high-speed winding machine, textile machinery other occasions meet the development needs of the transmission field.

The driver of permanent magnet AC servo system has experienced the development of analog mode hybrid, now it has entered the era of full digital. The full digital servo driver only overcomes the determination of large dispersion, zero drift low reliability of analog servo, but also gives full play to the advantages of digital control in control accuracy the flexibility of control method, making the servo driver only simple in structure, but also more reliable in performance. Now, most of the high-performance servo systems adopt permanent magnet AC servo system, including permanent magnet synchronous AC servo motor full digital AC permanent magnet synchronous servo driver.

Permanent magnet servo driver consists of two parts: Driver hardware control algorithm. The control algorithm is one of the key technologies to determine the performance of the AC servo system. It is the main part of the foreign AC servo technology blockade the core of the technology monopoly. 2. The basic structure of AC permanent magnet servo system AC permanent magnet synchronous servo driver mainly includes servo control unit, power drive unit, communication interface unit, servo motor corresponding feedback inspection