Microminiature incremental angle sensor capable of quickly finding zero and measuring method thereof

Abstract

The invention relates to the technical field of angle sensors, and provides a micro incremental angle sensor capable of quickly finding zero, which comprises an input shaft, a light source, a slit disc, a coding disc, a receiving plate and a sensor base, the input shaft is arranged above the center of the sensor base; the top end of the input shaft is used for being connected with a shaft to be measured, and the bottom end of the input shaft is fixedly connected with the coding disc. The light source, the slit disc and the receiving plate are respectively fixed on the sensor base, and the slitdisc, the encoding disc and the receiving plate are sequentially arranged above the light source; a first light passing slit and a second light passing slit are correspondingly formed in positions, corresponding to the receiving lamps on the receiving plate, of the slit disc; a first light-passing code channel is arranged at the position, corresponding to the radial direction of the first light-passing slit in the slit disc, of the coding disc, and a second light-passing code channel is arranged at the position, corresponding to the radial direction of the second light-passing slit in the slit disc, of the coding disc. According to the invention, the zero-finding function can be completed in the shortest time, and mechanical limiting can be prevented from being impacted.

Description

technical field [0001] The invention relates to the technical field of angle sensors, in particular to a micro-sized incremental angle sensor for fast zero-seeking and a measuring method thereof. Background technique [0002] Incremental angle sensors should be zeroed first when working. After the sensor is reset, it outputs a random incremental angle value. When the angle sensor rotates clockwise or counterclockwise through the zero angle, an absolute zero signal will be generated, and the angle value will be cleared. After completing the zero search, the sensor will start to work normally, and Computes the absolute angular position. [0003] figure 1 It is a schematic diagram of the homing principle of the incremental angle sensor in the prior art. Such as figure 1 As shown, the homing method of the traditional incremental angle sensor is as follows figure 1 As shown, in addition to the zero position signal, an additional positive limit signal La and negative limit si...

AI Technical Summary

Problems solved by technology

[0008] The present invention mainly solves the technical problems of poor zero-seeking efficiency and low efficiency of traditional incremental angle sensors, and proposes a micro-miniature incremental angle sensor and its measurement method for fast zero-seeking, which are generated by combining two zero-position signals. Absolute zero position signal, after the angle sensor is reset, the zero position signal has the function of indicating the position and orientation of the zero position, the system controls the rotation direction according to the zero position signal, the homing function can be completed in the shortest time, and the collision limit can be avoided

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