When the ring gear 6 rotates, the c

当齿圈6旋转时，波峰和齿隙交替面对极轴。在齿圈旋转期间，感应线圈内部的磁通量交替变化以产生感应电动势。该信号通过感应线圈末端的电缆1输入到ABS的电气控制单元。当齿圈的速度改变时，感应电动势的频率也改变。ABS电子控制单元通过检测感应电动势的频率来检测车轮速度。<br>电磁轮速度传感器结构简单，成本低廉，但具有以下缺点：第一，其输出信号的幅度随速度的变化而变化。如果车速太慢并且其输出信号低于1V，则电子控制单元将无法检测到它；第二，响应频率不高。速度过高时，传感器的频率响应无法跟上；第三是抗电磁干扰能力差。目前，国内外ABS系统的控制速度范围一般为15〜160km / h。将来，控制速度范围需要扩大到8〜260km / h甚至更大。显然，电磁感应轮速度传感器很难适应。

When the ring gear 6 rotates, the crest and backlash alternately face the polar axis. During the rotation of the ring gear, the magnetic flux inside the induction coil alternately changes to generate an induced electromotive force. This signal is input to the electric control unit of the ABS through the cable 1 at the end of the induction coil. When the speed of the ring gear changes, the frequency of the induced electromotive force also changes. The ABS electronic control unit detects the wheel speed by detecting the frequency of the induced electromotive force.<br>The electromagnetic wheel speed sensor has a simple structure and low cost, but has the following disadvantages: First, the amplitude of its output signal changes with the change of speed. If the vehicle speed is too slow and its output signal is lower than 1V, the electronic control unit cannot detect it; second, the response frequency is not high. When the speed is too high, the frequency response of the sensor can not keep up; the third is poor resistance to electromagnetic interference. At present, the control speed range of the ABS system at home and abroad is generally 15 ~ 160km / h. In the future, the control speed range is required to be expanded to 8 ~ 260km / h or even greater. Obviously, the electromagnetic induction wheel speed sensor is difficult to adapt.

齿圈6旋转时，齿顶和齿隙交替朝向极轴。在齿圈转动过程中，感应线圈内的磁通量交替变化，产生感应电动势。该信号通过感应线圈末端的电缆1输入到ABS的电气控制单元。当齿圈转速变化时，感应电动势的频率也随之变化。ABS电子控制单元通过检测感应电动势的频率来检测车轮转速。<br>电磁轮速传感器结构简单，成本低，但存在以下缺点：一是输出信号的幅值随转速的变化而变化。如果车速太慢，输出信号低于1V，电子控制单元检测不到；二是响应频率不高。转速过高时，传感器的频率响应跟不上；三是抗电磁干扰能力差。目前，国内外ABS系统的控制速度范围一般为15~160km/h，未来要求控制速度范围扩大到8~260km/h甚至更大。显然，电磁感应式车轮转速传感器很难适应。<br>