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

Abstract

This invention provides a sort of metrical method which realizes the forecast of the angular displacement of the numerical control rotating floor by the time-bar displacement sensing device. Add an intelligent interface unit between the time-bar and the numerical control system, the import of the intelligent interface unit is the absolute value of the angle which is measured by the time-bar; the export is the increment type impulse signal which can connects with the currency numerical control system. The intelligent interface unit progresses the forecast to the angular displacement figures in the unborn spell according to several discrete absolute value of the measured angle of the time-bar which is in the nonce and in the past. It corrects the predictive error figures which are in the former time slice according to the real measured angle figures which is in now. It realizes the predictive measure of the angular displacement of the numerical control rotating floor. This invention applies to the displacement sensing device with the timing sampling that the time-bar is used to be the deputation, and it applies to the position feedback of the whole closed loop which is from the function unit of the numerical control division likes the numerical control rotating floor, and so on.

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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Problems solved by technology

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

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