Measuring method for corner of vehicle steering wheel

A steering wheel angle and measurement method technology, applied in the field of sensors, can solve the problems of reduced precision, many transmission bodies, and no mathematical expression for calculating the number of gear rotations, and achieve the effect of eliminating system errors and reducing measurement accuracy
CN101293535AInactive Publication Date: 2008-10-29HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
2 Cites 18 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Publication Date
2008-10-29
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a measurement method for the rotation angle of an automobile steering wheel. A main rotation body in the automobile steering wheel drives an auxiliary rotation body to rotate under the rotation driving of a transmission shaft; the transmission ratio of the main rotation body and the auxiliary rotation body is m:n; the main rotation body gains the relative rotation angle Theta1 of the main rotation body by a first rotation angle sensor; the auxiliary rotation body gains the relative rotation angle Thelta2 of the auxiliary rotation body by a second rotation angle sensor, thus gaining practical intercept K; theoretical intercept L is gained by the practical intercept K; the rotation ring number P of the main rotation body is then gained by the theoretical intercept L; the relative rotation angle Thelta1 of the main rotation body and the relative rotation angle Theta2 of the auxiliary rotation body are input into a micro-processor; after processing, the micro-processor outputs an absolute rotation angle Theta in m ring of the main rotation body, namely, the absolute rotation angle Theta in m ring of the main rotation body is gained by the rotation ring number P of the main rotation body and the relative rotation angle Theta1 of the main rotation body. The measurement method of the automobile steering wheel can eliminate the system error which is caused by idle course and realize precisely measuring the absolute rotation angle Theta in m ring in small volume and simple structure.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of sensors, in particular to a method for measuring the steering wheel angle of an automobile. Background technique

[0002] The rotation angle sensor is used to detect the position of a rotation angle, and it can achieve high precision in measuring the rotation angle less than 360°. The high-precision photoelectric code disc can achieve more than 20 digits, that is, 1 second. If subdivision is used, a higher resolution can be achieved. However, when the measured angle range exceeds 360°, the problem of determining the number of turns will be encountered. Incremental angle sensors can measure multi-turn angles without reducing accuracy. However, incremental encoders have zero point accumulation. Error, poor anti-interference, power-off memory is required when the receiving device is shut down, zero or reference position should be reset when starting up, etc. Absolute angle measurement cannot be performed, and there a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More