Dynamic force sensor sensitivity calibration method and device

A force sensor and dynamic calibration technology, applied in the direction of measuring devices, instruments, force/torque/power measuring instrument calibration/testing, etc., can solve problems such as the difficulty of directly obtaining the absolute value of force, so as to eliminate external interference and realize installation the consistent effect of

Inactive Publication Date: 2017-04-26
HUBEI SANJIANG AEROSPACE HONGFENG CONTROL
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  • Abstract
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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a dynamic calibration method and devi

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  • Dynamic force sensor sensitivity calibration method and device
  • Dynamic force sensor sensitivity calibration method and device
  • Dynamic force sensor sensitivity calibration method and device

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[0048] Example 1:

[0049] The present invention proposes an engineering application method for dynamic calibration of the sensitivity of a force sensor. The steps are as follows: the force sensor to be calibrated and a standard acceleration sensor are fixedly connected together, and the sensor with a mounting hole is directly installed on the sensor manufacturer’s recommendation. Use screws to install on the standard acceleration sensor, put a thin layer of silicone grease between the mounting surfaces to fill up the gap to increase the mounting hardness, and then install the mass, and the vibration generator sends a sinusoidal signal to drive the vibration during calibration. The sensor generates vibration, and the acquisition system collects the output voltage signals of the standard accelerometer and the force sensor to be calibrated, and calculates the corresponding force according to the acceleration and mass, thereby obtaining the sensitivity of the force sensor.

[0050] Ob...

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Abstract

The invention discloses a dynamic force sensor sensitivity calibration method and device. The method comprises steps that silicone grease is filled between a calibration force sensor and a standard acceleration sensor fixing surface; M mass blocks are respectively arranged on a standard acceleration sensor for measurement, and the M is not smaller than 2, a vibrator is driven to generate vibration, output voltage signals of a standard acceleration gauge and a to-be-calibrated force sensor and acceleration detected by the standard acceleration gauge are acquired, and sensitivity of the to-be-calibrated force sensor is calculated according to the acquired signals. According to the method and the device, a fixing method of the to-be-calibrated force sensor and the standard acceleration sensor is realized, a specific dynamic calibration precision expression of the force sensor is acquired through derivation, no-suspension mounting requirement is proposed for the standard mass blocks, operation difficulty is reduced, and measurement precision and reliability are easily guaranteed.

Description

technical field [0001] The invention belongs to the calibration field of force sensors, and more specifically relates to a dynamic calibration method and a calibration device for the sensitivity of a force sensor. Background technique [0002] Piezoelectric accelerometers and force transducers are two of the most commonly used sensors in vibration testing. Sensor manufacturers always provide the sensitivity value of the accelerometer and its frequency characteristic graph. But different from the accelerometer: the manufacturer usually only provides the linearity diagram (static calibration) and sensitivity value of the force sensor within its range, and does not provide its frequency characteristic data. Due to the impact of the use environment, improper installation, overload, improper transportation and storage will cause changes in the characteristics of the force sensor, making the actual sensitivity of the sensor different from its nominal value. In dynamic measuremen...

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Application Information

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IPC IPC(8): G01L25/00
CPCG01L25/00
Inventor 周志朋
Owner HUBEI SANJIANG AEROSPACE HONGFENG CONTROL
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