| 嵌入式压力监测系统温漂误差精确补偿方法 |
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| 引用本文： | 邹天刚,杜明刚,杨正龙,杨阳.嵌入式压力监测系统温漂误差精确补偿方法[J].电子技术应用,2010(6). |
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| 作者姓名： | 邹天刚 杜明刚 杨正龙 杨阳 |
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| 作者单位： | 中国北方车辆研究所车辆传动国家重点实验室; |
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| 摘 要： | 设计了一个嵌入式特种车辆油缸压力实时监测系统。通过选用小型隔离膜片式压力传感器和高共模抑制比的测量放大电路实现了系统温度漂移误差硬补偿,利用微控制器实现B样条曲线拟合系统测量误差的软补偿算法。实验表明,通过软硬补偿算法的结合,整个系统的温漂非线性降低到满量程的0.05%之内,该监测系统已经在某型样车中使用。
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| 关 键 词： | 实时监测 共模抑制比 温度漂移 补偿 |
An accurate thermal errors compensating method for embedded pressure measuring system |
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| ZOU Tian Gang,DU Ming Gang,YANG Zheng Long,YANG Yang.An accurate thermal errors compensating method for embedded pressure measuring system[J].Application of Electronic Technique,2010(6). |
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| Authors: | ZOU Tian Gang DU Ming Gang YANG Zheng Long YANG Yang |
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| Affiliation: | ZOU Tian Gang,DU Ming Gang,YANG Zheng Long,YANG Yang(National Key Lab of Vehicular Transmission,China North Vehicle Research Institute,Beijing 100072,China) |
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| Abstract: | The embedded real-time pressure measuring system is designed for armored cars.To compensating the thermal errors,the pressure sensor of isolation membrane and the amplifier with high common-mode rejection ratio are used as hard-compensation,and the curve fitting algorithm based on B-spline is adopted in microcontroller unit(MCU) for the system thermal errors soft-compensation.The experimental results show that the pressure non-linearity of whole system is improved to 0.05% full scale(FS),and the pressure me... |
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| Keywords: | real-time measure common-mode rejection ratio temperature drift compensation |
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