Angular velocity sensor and method for measuring angular velocity
An angular velocity sensor and velocity measurement technology, applied in the field of measurement, can solve the problems of low resolution, velocity signal noise, affecting control accuracy, etc., and achieve the effect of ensuring measurement accuracy, small error, and low noise
Active Publication Date: 2020-04-10
SHANGHAI MICROPORT MEDBOT (GRP) CO LTD
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Problems solved by technology
This method has a natural defect: if the accuracy of the measured position signal is infinitely high, the speed signal obtained by numerical differentiation will have no error and is very smooth; if the accuracy of the position signal is very limited, the speed signal obtained by numerical differentiation will produce Very serious noise affects control accuracy
In order to reduce costs, many motor manufacturers have to choose encoders with low resolution
Low-resolution encoders introduce serious noise during speed measurement, especially in low-speed control
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[0058] In the traditional technology, the angular velocity of the measured object is mostly obtained by measuring the position change of the measured object. This kind of measurement method is not only expensive, but also complicated in the calculation and processing process. In addition, the error is large, resulting in low measurement accuracy and high accuracy. Hard to guarantee. In order to overcome one or more of these problems, the inventors have researched and developed an angular velocity sensor, which can help reduce the manufacturing cost and complexity of the angular velocity sensor, and can also reduce measurement errors and improve measurement accuracy.
[0059] The angular velocity sensor provided by the present invention includes a velocity conversion module and a velocity measurement module. The speed conversion module is used for receiving the angular velocity information of the measured object, and for converting the angular velocity information into torque i...
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The invention provides an angular velocity sensor and an angular velocity measurement method, the improvement of angular velocity measurement accuracy is helped, and the manufacturing cost and complexity of the angular velocity sensor are reduced. The angular velocity sensor of the present invention includes a velocity conversion module and a velocity measurement module. The velocity conversion module is used for receiving the angular velocity information of a measured object and converting the angular velocity information into torque information. The velocity measurement module is connected to the speed conversion module and is used for receiving and acquiring the torque information and obtaining the angular velocity of the measured object according to the torque information.
Description
technical field [0001] The invention relates to the technical field of measurement, in particular to an angular velocity sensor and a method for measuring angular velocity. Background technique [0002] In the field of industrial control, it is often necessary to monitor or control the angular velocity of some rotating equipment. For example, when controlling the speed of a servo motor, it is necessary to compare the actual rotational speed of the rotor with the target rotational speed, and then perform feedback control. [0003] When measuring the angular speed of the motor, the commonly used encoder first measures the position of the rotor, and then obtains the speed of the motor through numerical differentiation. This method has a natural defect: if the accuracy of the measured position signal is infinitely high, the velocity signal obtained by numerical differentiation will have no error and be very smooth; if the accuracy of the position signal is very limited, the vel...
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IPC IPC(8): G01P3/44
CPCG01P3/44
Inventor 夏玉辉何超师云雷王家寅
Owner SHANGHAI MICROPORT MEDBOT (GRP) CO LTD