Universal integrated permanent magnet alternating current servo system

Abstract

The invention provides a universal integrated permanent magnet alternating current servo system. The system comprises a controller, a permanent magnet alternating-current motor, a feedback device anda power supply circuit. The system is characterized in that the controller, the permanent magnet alternating current motor, the feedback device and the power supply circuit are all installed in an electrical device box; the controller, the permanent magnet alternating current motor, the feedback device and the power supply circuit are electrically connected with one another in the electrical device box; a power supply line and a communication line are led out of the electrical device box; one end, located in the electrical device box, of the power supply line is connected to the power supply circuit; and the end, located in the electrical device box, of the communication line is connected to the controller. In the invention, a power line and an encoder line are cancelled, an anti-interference capability of the servo system is greatly improved, the interference to peripheral equipment is reduced, and stability of the servo system is improved so that the stability of whole equipment is improved.

Description

technical field [0001] The invention belongs to the technical field of servo systems, in particular to a general integrated permanent magnet AC servo system. Background technique [0002] Such as figure 1 As shown, the general permanent magnet AC servo system is mainly composed of three parts: controller power amplifier, servo driver, permanent magnet AC motor, feedback device encoder. The current general practice is that the controller is made into a device box separately, the permanent magnet AC motor and the feedback device are in a device box, the two device boxes are installed separately, and the power line and the encoder line are connected between the two device boxes to form a A permanent magnet AC servo system. [0003] The current general practice of permanent magnet AC system has the following disadvantages: [0004] 1. The controller and the feedback device are installed separately, and the encoder line between the device boxes will be interfered by the outsid...

AI Technical Summary

Problems solved by technology

[0004] 1. The controller and the feedback device are installed separately, and the encoder line between the device boxes will be interfered by the outside world, causing errors in the feedback information, and eventually causing the servo system to alarm or lose control

Also, the longer the encoder cable between the device boxes, the greater the possibility of interference;

[0005] 2. The controller and the permanent magnet AC motor are installed separately. Since the current on the power line between the device boxes is high frequency and large current, it is very easy to cause interference to peripheral equipment and signal lines, resulting in failure of peripheral equipment

Moreover, the longer the power line between the device boxes, the more serious the interference will be;

[0006] 3. The cost of power lines and encoder lines between device boxes is relatively high. Taking a 1KW servo system as an example, it generally accounts for about 10% of the entire system cost;

[0007] 4. When wiring mechanical equipment, power lines and encoder lines should be considered to increase the difficulty of electrical wiring;

[0008] 5. The connectors of the power line and the encoder line between the device boxes are easily affected by environmental water, oil, dust, vibration, etc., resulting in failure of the connectors and affecting the stability of the servo system

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