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Dual probe-based angular displacement transducer on-line self-calibration method

An angular displacement sensor and self-calibration technology, which is applied in the direction of instruments, measuring devices, etc., can solve problems such as discomfort

Active Publication Date: 2013-07-24
CHONGQING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the currently known calibration methods generally require the use of standards or higher-precision angular displacement measuring instruments, which are not suitable for online

Method used

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  • Dual probe-based angular displacement transducer on-line self-calibration method
  • Dual probe-based angular displacement transducer on-line self-calibration method
  • Dual probe-based angular displacement transducer on-line self-calibration method

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Embodiment Construction

[0033] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] see figure 1 with figure 2 , an error online self-calibration method of an angular displacement sensor system is: in the magnetic grid sensor composed of the reading head A1, the reading head B2, the magnetic disk 3, the rotor 4 and the stator 5, the reading head A1 and the reading head B2 are arranged in the On the same circumference of the stator 5, with a distance of 33670°, the magnetic disk 3 is fixed to the rotor and fixedly connected to the rotating part of the measured object. As the measured object rotates, the two reading heads can simultaneously read the magnetic disk to realize the angle measurement of the measured object. Displacement measurement, when the measured object rotates a circle, the reading head A shows a value of 0, , respectively record the indications of reading head A and reading head B to obtai...

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Abstract

The invention discloses a dual probe-based angular displacement transducer on-line self-calibration method, which comprises the following steps: arranging two same reading heads which can perform synchronous measurement on rotary angular displacement of the same rotary object on a stator of a calibrated angular displacement transducer; fixedly connecting a rotor of the calibrated angular displacement transducer with a rotary part of the tested object; rotating a complete circle of 360 degrees; recording indicating values of the two reading heads at a series of special positions; and processing the indicating values to acquire a measurement error function of the transducer, thereby realizing on-line self-calibration of the calibrated angular displacement transducer. According to the self-calibration method, the synchronous measurement is performed by using the two reading heads arranged on the basis of a certain positional relation according to a circumferential closed principle in angular measurement, and on-line self-calibration of the transducer can be realized under the condition that no standard device or other high-accuracy angular displacement measuring instruments are available by processing the measurement data.

Description

technical field [0001] The invention belongs to the field of precision displacement measurement, and in particular relates to an online self-calibration method for an angular displacement sensor. Background technique [0002] Angular displacement measurement is one of the most basic geometric quantity measurements. The angular displacement sensor is an angular displacement measuring element. Typical representatives of this type of angular displacement sensors are: gratings, inductive synchros, synchros, resolvers, and time grating sensors. Due to deviations in processing, installation, and electrical parameters, there are errors in the angular displacement measurement of this type of sensor. Usually, the measurement accuracy can be improved by calibrating such sensors. However, the currently known calibration methods generally require the use of a standard or a higher-precision angular displacement measuring instrument, which is not suitable for online implementation. C...

Claims

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Application Information

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IPC IPC(8): G01B21/22
Inventor 陈锡侯彭东林张天恒郑永杨继森武亮
Owner CHONGQING UNIV OF TECH
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