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Device and method for monitoring dynamic thrust of linear motor at suspension state

A technology of linear motor and dynamic thrust, which is applied in the use of devices for measuring the time required to move a certain distance, measuring devices, electromagnetic wave reradiation, etc., which can solve the problem of low measurement accuracy, incapable of real-time monitoring, inability to accurately and dynamically monitor linear motors Thrust output and other issues, to achieve the effect of improving accuracy, improving computing power, and shortening the sampling period value

Inactive Publication Date: 2013-03-27
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing measurement methods have the characteristics of low measurement accuracy and inability to monitor in real time, and cannot accurately and dynamically monitor the thrust output of linear motors

Method used

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  • Device and method for monitoring dynamic thrust of linear motor at suspension state
  • Device and method for monitoring dynamic thrust of linear motor at suspension state
  • Device and method for monitoring dynamic thrust of linear motor at suspension state

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Embodiment Construction

[0031] Such as figure 1 Shown is the working flow diagram of the present invention, after the linear motor mover (6) drives the air bearing slider (1) to move, the photoelectric encoder reading head (5) performs real-time displacement measurement, and transmits the signal to the signal conversion and The preprocessing circuit outputs the thrust value and moving speed value of the motor in real time after analysis and calculation by the host computer software.

[0032] Such as figure 2 Shown is a structural diagram of the present invention installed on a linear motor drive device in an air-floating state. The present invention includes a non-contact photoelectric encoder installed on a linear motor and a signal conversion and preprocessing circuit installed inside a host computer , a high-speed data acquisition card, a calculation and analysis data unit; the non-contact photoelectric encoder includes a linear grating ruler (7) and a reading head (5); the linear grating ruler ...

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Abstract

The invention relates to a device and a method for monitoring dynamic thrust of a linear motor at a suspension state. The device comprises a non-contact type photoelectric encoder, a signal conversion and preprocessing circuit, a high-speed data collecting card and a computational analysis data unit, wherein the non-contact type photoelectric encoder is installed on the linear motor, the signal conversion and preprocessing circuit, the high-speed data collecting card and the computational analysis data unit are installed inside an upper computer, the non-contact type photoelectric encoder comprises a linear grating and a reading head, the linear grating is fixedly connected with a stator of the linear motor, and the reading head is fixedly connected with a reading head support and moves along with a movement module driven by the linear motor. According to the device and the method, the high-precision non-contact type photoelectric encoder is used, the dynamic thrust applied on the movement module is monitored in real time for the movement module driven by the linear motor in the suspending state through signal processing and data analyzing, the problem that the driving force of the linear motor can not be monitored in real time during driving of the linear motor in the suspending state can be solved, and the device and the method are significant to calibration of performance of the linear motor.

Description

technical field [0001] The invention relates to a device for real-time monitoring of the dynamic thrust of a linear motor in a suspended state. Background technique [0002] Linear motors have the characteristics of simple structure, high positioning accuracy, fast response, good acceleration performance, low noise, and high efficiency, and are widely used in automatic control systems. As an important index to measure the performance of the linear motor, the thrust reflects the working state of the motor. In the high-precision micro-feeding numerical control system, the thrust fluctuation will make the servo system deteriorate and cause the quality of the processed product to be reduced or even scrapped. Therefore, it is of great significance to monitor the motor thrust in real time. [0003] The existing measurement methods have the characteristics of low measurement accuracy and inability to monitor in real time, and cannot accurately and dynamically monitor the thrust o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00G01P3/68
Inventor 张从鹏罗学科李美波
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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