Force balanced closed-loop angular velocity sensor

Abstract

The invention discloses a force balanced closed-loop angular velocity sensor. The sensor includes a housing, a measuring portion disposed inside the housing, and a connecting portion disposed outsidethe housing. The measuring portion includes two sensing element structures, a rotor, a central shaft and a conductive bearing. The two sensing element structures are symmetrically distributed on the rotor. The central shaft is fixedly connected to the outer casing. An inner ring of the conductive bearing is connected to the central shaft, and an outer ring of the conductive bearing is connected tothe rotor. A small diameter portion of the rotor is the connecting portion which is connected to an object to be measured. The object to be measured drives the connecting part to rotate, and a largediameter portion of the rotor is the measuring portion. By combining the advantages of an elastic component and a photoelectric component as sensitive components, the closed-loop control of a feedbackcontrol principle is applied, and the detection accuracy of the force balanced closed-loop angular velocity sensor is improved.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a force-balanced closed-loop angular velocity sensor. Background technique [0002] The sensor is a detection device that can detect the change of the measured value, and then convert the measured analog quantity into a digital signal output through a certain conversion rule, and can realize the requirements of information transmission, processing, recording, display and control. [0003] In the traditional inertial measurement, the gyroscope is used to measure the angular velocity of the object's motion, while the traditional mechanical gyroscope has a small full load of movable parts, resulting in limited range and low sensitivity. In order to solve the problem of limited range, optical gyroscopes are used for inertial measurement, but optical gyroscopes have high requirements for light sources, are not easy to maintain, and cost too much; micromechanical gyroscopes have not been widely ...

AI Technical Summary

Problems solved by technology

[0003] In the traditional inertial measurement, the gyroscope is used to measure the angular velocity of the object's motion, while the traditional mechanical gyroscope has a small full load of movable parts, resulting in limited range and low sensitivity

In order to solve the problem of limited range, optical gyroscopes are used for inertial measurement, but optical gyroscopes have high requirements for light sources, are not easy to maintain, and cost too much; micromechanical gyroscopes have not been widely used due to complex processing technology and low precision. Applications

[0004] The traditional measurement sensors are all open-loop control, and each link is connected in series, which greatly limits the measurement accuracy, dynamic response characteristics and reliability.

Due to open-loop control, the accuracy of the sensor depends on the accuracy of each link, so the accuracy of each link must be strictly controlled to improve the accuracy of the entire sensor. The more links will lead to the lower measurement accuracy of the sensor

Images