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Digital AC servo control system and control method thereof

A technology of AC servo and control system, which is applied in the field of digital AC servo control system, can solve the problems such as the size increase of digital AC servo control system, and achieve the effect of preventing size increase, preventing becoming complicated, and avoiding cost increase

Inactive Publication Date: 2020-08-18
台州中盟联动企业管理合伙企业(有限合伙)
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  • Abstract
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  • Claims
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Problems solved by technology

While preventing the digital AC servo control system from becoming complex or increasing in size to control costs

Method used

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  • Digital AC servo control system and control method thereof
  • Digital AC servo control system and control method thereof
  • Digital AC servo control system and control method thereof

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Embodiment Construction

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039]

[0040] refer to figure 1 The digital AC servo control system of the present invention will be described.

[0041] The digital AC servo control system includes AC servo motor SM, resolver RES, RD converter RDC, central processing unit MCU and AC servo motor drive circuit MD.

[0042] The AC servo motor SM is driven by the drive current Idri output from the AC servo motor drive circuit MD. The drive current Idri is, for example, a three-...

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Abstract

The invention provides a digital AC servo control system and a control method thereof. The system comprises a resolver configured to detect a rotation angle of an AC servo motor; an RD converter configured to convert the analog angle signal output from the resolver into a digital angle signal; and a central processing unit MCU configured to control the AC servo motor based on the digital angle signal output from the RD converter. According to the present invention, an abnormality in an RD converter can be accurately detected in real time even when the rotational speed of an AC servo motor is changed, and at the same time, a digital AC servo control system is prevented from becoming complex or increasing in size.

Description

technical field [0001] The invention relates to the field of numerical control, in particular, the invention relates to a digital AC servo control system for detecting abnormalities in RD converters. Background technique [0002] Speed ​​is one of the most basic and important parameters of AC servo motors. The ignition speed at startup, the speed adjustment during operation, the stop protection at overspeed, and even the size of the load can also be reflected from the speed. Therefore, the speed measurement It is the basis of AC servo motor monitoring and protection. [0003] In the prior art, the abnormality of the motor speed is detected by sampling the analog angle signal output from the resolver at a period of 1 / 2n (n≥2). However, the inventors have discovered that the prior art will disqualify a passing overspeed (speed) system as failing. Combine below Image 6 Explain why the exception cannot be detected correctly: [0004] Image 6 It is a diagram of the digital a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00H02P23/00
CPCG01R31/00H02P23/00
Inventor 董直姜张太猛张太为陈崇友屠奔奔
Owner 台州中盟联动企业管理合伙企业(有限合伙)
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