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Method for realizing numerical control rotating platform angular displacement forecast measurement using time gate displacement sensor

A technology of displacement sensor and time grating, which is applied in the direction of using electric/magnetic devices to transmit sensing components, digital control, electrical program control, etc., and can solve the problem that the time grating cannot be applied to dynamic continuous position feedback.

Inactive Publication Date: 2009-07-15
CHONGQING UNIV OF TECH
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  • Claims
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Problems solved by technology

Therefore, current time gratings cannot be applied to dynamic continuous position feedback

Method used

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  • Method for realizing numerical control rotating platform angular displacement forecast measurement using time gate displacement sensor
  • Method for realizing numerical control rotating platform angular displacement forecast measurement using time gate displacement sensor
  • Method for realizing numerical control rotating platform angular displacement forecast measurement using time gate displacement sensor

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Embodiment Construction

[0021] Below in conjunction with concrete hardware and software illustrate the realization of the inventive method:

[0022] see Figure 4 , the time grid uses a digital signal processor DSP (U1) to process data, and its specific model is TMS320VC33. The / STRB and PAGE3 terminals of U1 pass through the OR gate U31, the output terminal of U31 is connected to one input terminal of the NOR gate U32, the other input terminal of U32 is connected to the A0 terminal of U1, and the output terminal of U32 is divided into two channels and respectively connected to U1 The EINT3 end and the LOCK end of the latch U33. The 32 data input lines D31~D0 of U33 are connected with the 32 data lines D31~D0 of U1 in turn, and the 32 data output lines 031~00 of U33 are respectively connected with two 16-bit tri-state bus buffers (U34 and U35). The data input lines D15-D0 are connected, and the data output lines 015-00 of U34 and U35 are all connected to the P0.17-P0.2 terminals of the ARM processo...

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Abstract

The invention proposes a method for realizing the prediction and measurement of the angular displacement of a numerical control turntable by using a time grating displacement sensor. An intelligent interface unit is added between the time grid and the numerical control system. The input of the intelligent interface unit is the absolute angle value measured by the time grid, and the output is an incremental pulse signal that can interface with the general numerical control system; the intelligent interface unit is based on the time grid Some current and past discrete absolute angle measurement values ​​are used to predict the angular displacement value of the grating in the future, and then generate incremental continuous pulse signals representing the predicted angle values ​​in time series, and according to the current actual measured angle The value corrects the prediction error value of the previous period to realize the prediction and measurement of the angular displacement of the CNC turntable. The invention is used to use the timing sampling displacement sensor represented by the time grating for full closed-loop position feedback of numerical control indexing functional components such as a numerical control turntable.

Description

technical field [0001] The invention relates to a new method for prediction and measurement of a displacement sensor. A timed sampling displacement sensor represented by a time grating can be used for full-closed-loop position feedback of numerical control indexing functional components such as a numerical control turntable. Background technique [0002] The time grid sensor is a newly invented displacement sensor, which uses time to measure the spatial position, and is a static absolute measurement sensor. The time grating designed based on the principle of static measurement, due to the existence of the measurement period (that is, the sampling period), there will be a measurement blind area within a certain period of time, and no new measurement results will be output. However, when the CNC system performs full-closed-loop servo control, it uses hardware timing interrupts to sample position feedback information. The timing period of the time grid and the CNC system are in...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/244G05B19/19
Inventor 彭东林刘小康费业泰万文略
Owner CHONGQING UNIV OF TECH