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霍尔电压测量中的副效应及其消除方法
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作者 申宗仁 《信息工程学院学报》 1991年第3期47-50,共4页
关键词 电压测量 副效应 霍尔电压测量
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Sensor Hall Effect on Analyses Mechanical Stress
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作者 Jacques Cousteau da Silva Borges Abel Cavalcante Lima Filho Francisco Antonio Belo 《Journal of Mechanics Engineering and Automation》 2015年第1期19-25,共7页
Measuring the magnetic field is a common practice in industrial processes. We can cite the voltage measurements through PTs (potential transformers). This is a classic example of inductive field measuring, predictin... Measuring the magnetic field is a common practice in industrial processes. We can cite the voltage measurements through PTs (potential transformers). This is a classic example of inductive field measuring, predicting to be measured quantity is of oscillatory nature, with the circuit instrumentation scaled and calibrated for a typical frequency of 50/60 Hz. For a long time, only the binary information: "this field" and "missing field" is needed. For example, only with this information can we identify the frequency of the rotating shaft. Currently, new technologies employ magnetic sensors for measuring positions (distances, angles, etc.) from the intensity of the magnetic field. Inductive sensors are inefficient on measurements of static fields, such as magnets, opening spaces for new linear Hall effect sensors, and static which deal with these situations without difficulty. The present study examines the behavior of the Hall sensor, making the measurement of the intensity of the static magnetic field of the rotating magnet and the same, verifying the effect of the speed at which the magnet passes the sensor in some way alter the measurement. The results are favorable manda and the versatility of these sensors in many different applications. 展开更多
关键词 Dynamic measurement Hall effect INSTRUMENTATION sensors and actuators in robotics
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第35届物理竞赛预赛第4题对高中物理课题研究教学的启示 被引量:1
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作者 李勇 孙明西 《物理教学》 北大核心 2019年第4期70-71,74,共3页
从对2018年第35届全国中学生物理竞赛预赛第4题进行解析出发,结合教材和基于物理核心素养的要求对该试题特点进行分析,提出对我们教学的启示:要提高学生学习能力,培养学生强烈的问题意识,通过独立的解决实际问题,提高学生学习物理的主... 从对2018年第35届全国中学生物理竞赛预赛第4题进行解析出发,结合教材和基于物理核心素养的要求对该试题特点进行分析,提出对我们教学的启示:要提高学生学习能力,培养学生强烈的问题意识,通过独立的解决实际问题,提高学生学习物理的主动性和兴趣,提高探究能力;通过深入探究,考虑霍尔效应的其他副效应对测量霍尔电压的影响,以期对中学物理课程中课题研究部分教学提供策略,增强学生深层次的理解能力,培养学生的创新意识和能力。 展开更多
关键词 物理竞赛 霍尔电压测量 课题研究 创新意识
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