Noncontact angle measuring system and measuring method thereof

Abstract

The invention belongs to the technical field of noncontact measurement, and specifically discloses a noncontact angle measuring system and a measuring method thereof. The computer of the system is connected with a CCD camera through a USB data line. The lens of the CCD camera is aligned with an object to be measured. The measuring system and method can measure a flexible test piece, and may measure a measured objected in the severe environment, such as high temperature, high pressure and underwater environment. The method comprises: making a large mark point and a small mark point on the surface of the rotating shaft of the measured object; acquiring the end face images of the rotating shafts of the large and small mark points ; processing the end face images; acquiring the circle centers of the large mark point area and the small mark point area by using a binaryzation method, and obtaining the center coordinates of the large and small mark points; and obtaining the angle [beta] of the measured object so as to complete the noncontact angle measurement of the measured object. The measurement system and method can measure flexible test piece and may measure a measured objected in the severe environment, such as high temperature, high pressure and underwater environment.

Description

technical field [0001] The invention belongs to the technical field of non-contact measurement, and in particular relates to a non-contact angle measurement system used in a servo control system and a measurement method thereof. Background technique [0002] Angle sensors are widely used in automobiles, machinery, aviation, aerospace, navigation, industrial automation and other fields. At present, the angle measuring device commonly used in the servo control system is a resolver. The resolver is an angle measuring device whose output voltage changes with a certain regularity with the rotor angle. The appearance structure is similar to that of a motor. It has a stator and a rotor. In principle, it is a A rotatable transformer, the primary transformer and the secondary side are on the stator and windings, the degree of electromagnetic coupling between the primary and secondary windings is related to the rotor and the rotation angle, so the output voltage is related to the rota...

AI Technical Summary

Problems solved by technology

However, the decoding of its output signal is complicated, and it needs to be connected with the measured object and requires a certain installation space. With the increase of use time, there will be problems such as mechanical wear and lower precision, which also limits its application range, especially in the measurement of flexible materials. Rotation angle or in some special environments (such as high temperature, high pressure, water) and certain restrictions on the installation space, the resolver-type angle measuring device can no longer meet the demand

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