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Alternating current servo motor driver control circuit

An AC servo motor and control circuit technology, applied in the circuit field, can solve problems such as the gap in characteristic efficiency, achieve the effects of prolonging service life, improving control accuracy, reducing wear and vibration

Inactive Publication Date: 2013-05-15
瑞力盟数控技术(常州)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although IM has a solid structure, simple manufacture, and low price, there is a gap in characteristics and efficiency, and it is only valued in high-power occasions.

Method used

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  • Alternating current servo motor driver control circuit

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Embodiment Construction

[0013] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0014] see figure 1 , the embodiment of the present invention includes:

[0015] A control circuit for an AC servo motor driver, comprising an arithmetic unit 1, a signal generator 2, a zero sensor 3 and a load sensor 4, the arithmetic unit 1 is provided with an input interface 5, a communication interface 6, and a monitoring interface 7. The arithmetic unit 1 is connected to the signal generator 2 through a zero position sensor 3 and a load sensor 4 , and a feedback interface 9 is provided at one end of the signal generator 2 .

[0016] Among them, the functions of each component are as follows:

[0017] Input interface 5: receiving external c...

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Abstract

The invention discloses an alternating current servo motor driver control circuit which comprises an arithmetic unit, a signal generator, a zero position sensor and a load sensor. An input interface, a communication interface and a monitoring interface are arranged on the arithmetic unit, the arithmetic unit is connected with the signal generator through the zero position sensor and the load sensor, and a feedback interface is arranged at one end of the signal generator. The alternating current servo motor driver control circuit improves control precision of a three-phase alternating current asynchronous motor, can control positions, rotating speeds, accelerated speeds and output torque of a common alternating current induction motor and a variable-frequency motor, achieves all-digital control for the motor, enables the alternating current induction motor to have the same speed-adjusting character of a synchronous motor and a direct current motor, is beneficial to reducing abrasion and vibration of parts of the three-phase alternating current asynchronous motor by using of the zero position sensor and a compound sensor, and prolongs service life of the three-phase alternating current asynchronous motor.

Description

technical field [0001] The invention relates to the field of circuits, in particular to an AC servo motor driver control circuit for a three-phase AC asynchronous motor. Background technique [0002] In AC servo systems, the types of motors are Permanent Magnet Synchronous AC Servo Motor (PMSM) and Induction Asynchronous AC Servo Motor (IM). PMSM has very good low-speed performance, can realize high-speed control of field weakening, wide speed range, high dynamic characteristics and high efficiency, and has become the mainstream choice of servo system. Although IM has a solid structure, simple manufacture, and low price, there is a gap in characteristics and efficiency, and it is only valued in high-power applications. [0003] The performance of the AC servo system can be measured in terms of speed range, positioning accuracy, steady speed accuracy, dynamic response and operational stability. In terms of control strategy, the voltage-frequency control method based on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P25/02H02P23/00
Inventor 葛玉江
Owner 瑞力盟数控技术(常州)有限公司
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