3BHE023784R2630工控控制器,PPD103B101使用过程
基于Pressductor®技术的测量技术力传感器的工作原理对其性能有很大影响。它也会影响整个称重传感器的刚性和无振动程度，以及其鲁棒性和过载耐受性。所有这些因素都会影响web处理机械。
ABB的Pressductor®传感器技术会在称重传感器受到机械力时的电磁场。这是一个操作系统起源于冶金现象的原理，根据该原理，机械力改变了某些钢传递磁场的能力。与其他类型的称重传感器不同技术，无需进行物理运动，如压缩、弯曲或拉伸信号生成。
3BHE023784R2630工控控制器,PPD103B101使用过程Pressductor®传感器（称重传感器内的传感器）是一种简单而优雅的设计。基本上，围绕钢芯的两根垂直铜线绕组结合在一起，提供测量信号。电磁场是通过不断地向其中一个绕组。由于绕组与当称重传感器无应力时，它们之间没有磁耦合。
然而，当传感器受到力时，如图所示，磁场模式更改。一部分磁场与第二绕组耦合，并感应交流反映卷筒在测量辊上施加的张力的电压。该电压-a较强的传感器信号-由称重传感器系统的张力转换电子元件输入系统输出。
The Measuring Technique Based on Pressductor® Technology
The operating principle of a force transducer has a great effect on how well it will perform. It
also affects how stiff and vibration-free the entire load cell will be, as well its robustness and
tolerance to overload. All of these factors impact on the design, operation, and maintenance of
the web processing machinery.
ABB’s Pressductor® transducer technology produces a signal as a result of changes in an
electromagnetic field when the load cell is subjected to mechanical force. It is an operating
principle that has its origin in a metallurgical phenomenon according to which mechanical
forces alter the ability of some steels to convey a magnetic field. Unlike other types of load cell
technologies, physical movement such as compression, bending or stretching is not required for
signal generation.
A Pressductor® transducer (the sensor inside the load cell) is a simple and elegant design.
Essentially, two perpendicular windings of copper wire around a steel core combine to provide a
measurement signal.
An electromagnetic field is created by continuously feeding an alternating current to one of the
windings. The field is positioned in such a way that, since the windings are at right angles to
each other, there is no magnetic coupling between them when the load cell is unstressed.
However, when the transducer is subjected to a force, as shown in the figure, the magnetic field
pattern changes. A portion of the field couples with the second winding and induces an AC
voltage that reflects the tension exerted by the web on the measurement roll. This voltage - a
comparatively strong transducer signal - is converted by the load cell system’s tension
electronics into a system output.
