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Motor frequency change servo controller

A servo controller and motor technology, applied in the direction of DC motor speed/torque control, control system, electrical components, etc., can solve the problems of rotor centrifugation speed limit, complex control, high cost, etc., to improve various performance indicators, Programming Simple Effects

Inactive Publication Date: 2003-04-30
中国敏捷集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are the following problems: the brush motor needs frequent maintenance, cleaning, and replacement of brushes, which brings about high maintenance costs; the temperature rise or vibration of the motor will cause the permanent magnet to weaken or fall off, causing the output power of the motor to drop or even There are accidents involving personal safety; due to the weak magnetic field of the permanent magnet and the spark of the commutator, it is difficult to start directly from a standstill; and due to the spark of the commutator, some specific fields (suc

Method used

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  • Motor frequency change servo controller
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  • Motor frequency change servo controller

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Example Embodiment

[0011] figure 1 It is a block diagram of the controller of the present invention. The servo controller is used to control one or more three-phase AC squirrel cage motors (1 in the figure) 1, and includes a switching power supply part 2, a main circuit part 3 and a control circuit (CPU main board) )Part 4. The main circuit part 3 has built-in power protection circuits such as rectification, filtering, and inversion, which are connected between the external power supply and the squirrel cage motor 1, and are used to switch different access power sources according to the needs of the squirrel cage motor. The voltage range of AC / DC9V to AC / DC500V, the figure shows the three-phase AC power supply of AC9V / AC500V; the switching power supply part 2, adopts a specially designed switching power supply to provide power to the control board; and control Loop (CPU motherboard) part 4 ( figure 1 The part within the dashed box), which integrates a system-on-chip (SOC), an intelligent power mo...

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Abstract

A motor servo controller of frequency conversion includes a main loop part consisting of rectifying, filtering, contravariant circuits which are connected between the output power source and the squirrel-cage motor, a power source part for supplying the power to the main cotrol panel and the control loop part integrating of chip in system grade, intelligent power module and output-input circuit. The servo controller which appies the intelligent control to controlling the squirrel-cage motor can control the position, rotary speed, accelerated speed and output torque of any size of motor effectively through the programing.

Description

technical field [0001] The invention relates to a frequency conversion servo controller, in particular to a motor frequency conversion servo controller. Background technique [0002] With the rapid development of microelectronics technology and power semiconductor technology, frequency conversion technology has made great progress in AC asynchronous motors, which account for 85% of the total power load. As we all know, the controllers used to control DC brushed servo motors and AC brushless servo motors occupy the mainstream position in the control field. [0003] The rotation of the DC brushed servo motor is a constant magnetic field generated by the permanent magnet on the stator side. After the rectification of the rotor, a current orthogonal to the stator magnetic field passes through the armature coil of the rotor to generate a turning force. This orthogonal relationship is automatically maintained by the brushes and the commutator, so the control is relatively simple....

Claims

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Application Information

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Inventor 张湘月
Owner 中国敏捷集团有限公司