A ±2A/15A Current Sensor with 1.4 μA Supply Current and ±0.35%/0.6% Gain Error From −40 to 85°C using an Analog Temperature-Compensation Scheme

The interferometric electric current fiber-optic sensor for application in industry is presented. The modified spun fiber is used for sensitive fiber coil of sensor. The sensor has accuracy of 0.5% at temperature range from -40°C to 60°C without necessity of additional temperature compensation. The range of measured current is 15 – 250 kA. A frequency band is 0 – 5000 Hz and a nonlinearity of a sensor output is ±0.15%.

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Novel displacement eddy current sensor with temperature compensation for electrohydraulic valves

Sensors and Actuators A Physical ◽

10.1016/j.sna.2005.04.008 ◽

2005 ◽

Vol 122 (1) ◽

pp. 83-87 ◽

Cited By ~ 26

Author(s):

Qipeng Li ◽

Fan Ding

Keyword(s):

Eddy Current ◽

Temperature Compensation ◽

Current Sensor ◽

Eddy Current Sensor

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Temperature Compensation of Fiber Bragg Grating Current Sensor Based on Optimized Neural Network Algorithm

Acta Optica Sinica ◽

10.3788/aos201737.1006001 ◽

2017 ◽

Vol 37 (10) ◽

pp. 1006001

Author(s):

孙诗晴 Sun Shiqing ◽

初凤红 Chu Fenghong

Keyword(s):

Neural Network ◽

Fiber Bragg Grating ◽

Temperature Compensation ◽

Current Sensor ◽

Bragg Grating ◽

Network Algorithm ◽

Neural Network Algorithm

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Flying Clearance Distribution With Thermo-Mechanical Actuation of Hard Disk Drive

STLE/ASME 2008 International Joint Tribology Conference ◽

10.1115/ijtc2008-71083 ◽

2008 ◽

Author(s):

Sung-Chang Lee ◽

George W. Tyndall ◽

Mike Suk

Keyword(s):

Environmental Change ◽

Temperature Change ◽

Temperature Sensitivity ◽

Temperature Compensation ◽

Hard Disk Drives ◽

Hard Disk ◽

Disk Drive ◽

Disk Drives ◽

Compensation Scheme ◽

Mechanical Actuation

Flying clearance distribution with thermo-mechanical actuation is characterized. Especially, what factors contributing to variation of flying clearance are identified based on thermo-mechanical actuation profiles taken from burn-in process of hard disk drives and Gage R&R test of touch down repeatability. In addition, the effect of static temperature compensation scheme on flying clearance distribution is investigated and disadvantages of static adaptation to temperature change are identified. In order to avoid catastrophic early HDI failures due to poor static temperature compensation, we need to dynamically adjust flying clearance whenever environmental change is detected. Otherwise we need to utilize individual temperature sensitivity values of each flying head to adjust thermo-mechanical actuation amount accordingly with temperature change.

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