Data filtering fusion algorithm and device based on multi-path position detection sensor

Abstract

The invention provides a data filtering fusion algorithm and device based on a multi-path position detection sensor. The data filtering fusion algorithm is characterized in that asingle-channel filtering module is arranged to perform single-channel filtering on each path of data, so that wrong data and fault acquisition channels can be eliminated, and sensor fault real-time monitoring and data transmission can be realized; a multi-path data fusion module is arranged to compare and fuse all paths of filtered data, so that the precision and the refreshing speed of position data are further improved, and redundancy of multi-path sensor channels is realized; and in order to obtain position detection data of which the precision and the acquisition speed both meet the requirements of the position control system, the position monitoring system disclosed by the invention adopts various types of position sensors to acquire data.

Description

technical field [0001] The invention-type patent relates to the field of position monitoring, especially the data filtering fusion algorithm and device based on multi-channel position detection sensors. Background technique [0002] In a high-precision position and speed control system, there are high requirements for the range, speed and detection accuracy of position detection data acquisition. For example, a large inertia, multi-axis rigid operation platform requires a linear absolute position range of several hundred meters, the acquisition data refresh rate reaches 1ms, and the detection accuracy is required to reach the level of 0.1 mm. The acquisition speed and accuracy of common grating scales and magnetic strip linear position detectors are relatively high, but the maximum range is only tens of meters; the speed and range of incremental rotary encoders meet the requirements, but the accuracy is only at the millimeter level, which cannot meet the requirements ; The ...

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Problems solved by technology

The acquisition speed and accuracy of common grating scales and magnetic strip linear position detectors are relatively high, but the maximum range is only tens of meters; the speed and range of incremental rotary encoders meet the requirements, but the accuracy is only at the millimeter level, which cannot meet the requirements ; The range and accuracy of the barcode positioning system PCV meet the requirements, but the data refresh rate is slow, the maximum is 40Hz

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