نتایج جستجو برای: temperature compensation

تعداد نتایج: 493376  

2015
Yuanyuan Peng Yoshihiko Hasegawa Nasimul Noman Hitoshi Iba

Temperature compensation is a notable property of circadian oscillators that indicates the insensitivity of the oscillator system’s period to temperature changes; the underlying mechanism, however, is still unclear. We investigated the influence of protein dimerization and cooperative stability in protein degradation on the temperature compensation ability of two oscillators. Here, cooperative ...

2015
Li Qin Dandan Shen Tanyong Wei Qiu-lin Tan Tao Luo Zhaoying Zhou Jijun Xiong

In this work, a wireless passive LC resonant sensor based on DuPont 951 ceramic is proposed and tested in a developed high-temperature/pressure complex environment. The test results show that the measured resonant frequency varies approximately linearly with the applied pressure; simultaneously, high temperature causes pressure signal drift and changes the response sensitivity. Through the theo...

2014
Guanwu Zhou Yulong Zhao Fangfang Guo Wenju Xu

Theoretical analysis in this paper indicates that the accuracy of a silicon piezoresistive pressure sensor is mainly affected by thermal drift, and varies nonlinearly with the temperature. Here, a smart temperature compensation system to reduce its effect on accuracy is proposed. Firstly, an effective conditioning circuit for signal processing and data acquisition is designed. The hardware to i...

2009
Dunzhu Xia Shuling Chen Shourong Wang Hongsheng Li

In the analysis of the effects of temperature on the performance of microgyroscopes, it is found that the resonant frequency of the microgyroscope decreases linearly as the temperature increases, and the quality factor changes drastically at low temperatures. Moreover, the zero bias changes greatly with temperature variations. To reduce the temperature effects on the microgyroscope, temperature...

2012
Xiuchun Hao Yonggang Jiang Hidekuni Takao Kazusuke Maenaka Kohei Higuchi

A novel gas-sealed capacitive pressure sensor with a temperature compensation structure is reported. The pressure sensor is sealed by Au-Au diffusion bonding under a nitrogen ambient with a pressure of 100 kPa and integrated with a platinum resistor-based temperature sensor for human activity monitoring applications. The capacitance-pressure and capacitance-temperature characteristics of the ga...

2014
Frederic A Roemschied Monika JB Eberhard Jan-Hendrik Schleimer Bernhard Ronacher Susanne Schreiber

Changes in temperature affect biochemical reaction rates and, consequently, neural processing. The nervous systems of poikilothermic animals must have evolved mechanisms enabling them to retain their functionality under varying temperatures. Auditory receptor neurons of grasshoppers respond to sound in a surprisingly temperature-compensated manner: firing rates depend moderately on temperature,...

A. Nasri H. Zolfkhani M. Katebi, S. Toofan

This paper presents a temperature compensation voltage controlled oscillator (VCO) based on Cross-Coupled pair and Colpitts structures which is suitable for military fields. Also, two inductors have been used for increasing the negative conductance. By using this method, start-up condition has been improved. Two varactors and a simple capacitor bank are applied for covering a wide tunning range...

2011
N. P. Futane S. RoyChowdhury C. RoyChaudhuri H. Saha

The paper focuses on the design of a CMOS analog ASIC for temperature-drift compensation of a high sensitivity piezoresistive micro-machined porous silicon pressure sensor to avoid analog-to-digital conversion, limit chip area and reduce power consumption. For implementing the compensation circuitry, multilayered perceptron (MLP) based artificial neural network (ANN) with inverse delayed functi...

2008
RADU DAN MIHAESCU

This paper includes the study of a known very simple reference current source, having two branches, where the temperature-compensation of the sum of branch currents (the total current) is done. This kind of approach is adequate when the reference must supply current in a charge with grounded or connected to voltage supply end. The first-order thermal compensation of the reference current is ana...

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