Question:
will now be implemented without Hall motor, although I know what the benefits of non-Hall, but I still do not know what it was like Hall devices
Answer:
application of the Hall element The basic principle is that Hall effect. Hall effect is a magnetic effect, generally the length of the semiconductor thin X direction applied magnetic induction B, magnetic field intensity, then the width of the Y direction will produce electromotive force UH, a phenomenon that is known as the Hall effect. UH known as the Hall electric potential, its size can be expressed as:
UH = RH / d * IC * B (1)
formula, RH known as the Hall coefficient, by the nature of the semiconductor material; d is the thickness of semiconductor materials .
-based RH / d = K, then equation (1) can be written as:
UH = K * IC * B (2)
can be seen, Hall-voltage and control current and magnetic induction intensity is proportional to the product, K is called the product of sensitivity . K value is larger, the higher the sensitivity; components, the smaller the thickness, the greater the output voltage.
in equation (2), if the control current IC, is a constant, magnetic induction intensity B and the measured current is proportional to the Hall current sensor can be made; In addition, if the IC is still a fixed constant, B and the measured voltage into a proportional, but also made of Hall voltage sensor.
Chinese:霍尔是什么意思
问题:
现在将要推行无霍尔电机,虽然我知道无霍尔有什么好处,但是我还是不知道霍尔器件是什么样子
回答:
霍尔元件应用的基本原理是霍尔效应。霍尔效应是一种磁敏效应，一般在半导体薄片的长度X方向上施加磁感应强度为B的磁场，则在宽度Y方向上会产生电动势UH，这种现象即称为霍尔效应。UH称为霍尔电势，其大小可表示为：
UH=RH/d*IC*B （1）
式中，RH称为霍尔系数，由半导体材料的性质决定；d为半导体材料的厚度。
设RH/d=K,则式（1）可写为：
UH=K*IC*B (2)
可见，霍尔电压与控制电流及磁感应强度的乘积成正比，K称为乘积灵敏度。K值越大，灵敏度就越高；元件厚度越小，输出电压也越大。
在式（2）中，若控制电流IC,为常数，磁感应强度B与被测电流成正比，就可以做成霍尔电流传感器；另外，若仍固定IC为常数，B与被测电压成正比，又可制成霍尔电压传感器。
