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创新:

 

EnDra® 多圈技术

初始状态和问题分析

绝对值编码器发送轴的位置值进行定位,在生产或包装机器中的单圈位置。

例如,如果您想要记录超过一圈后的绝对位置值,记录的圈数是在单圈位置上另外增加的,这被称为多圈编码器。位置信息通常使用智能接口发送到控制器(例如 PROFINET、EtherCAT、CAN)。

现场应用的旋转运动使编码器可以获得机械能。如果有可能将其转换成足够的电能,从而以电信号的形式记录转数,那么,尽管这不是永动机的发明,但它确实构成了一个能自给自足的电量用于多圈计数。发电机不工作,因为即使是最小的旋转也能在低速状态下发生。

 

Wachendorff的创新技术EnDra®(能量金属线)。

一切都是按照我们的规范来制造的,确保了从韦根线到 EnDra® 线圈所需的工艺和质量。

EnDra®多圈技术的功能原理 

一根韦根线包含了有磁性的硬壳和软核。每转(单圈)的绝对位置由旋转轴上的磁铁和四个霍尔传感器测量。如果磁体的磁场通过轴的旋转沿韦根线移动,磁性软核就被迫跟随磁场,但这个跟随受到了磁性硬核的约束。

在能量线中产生了越来越大的磁场差(例如,在拉紧弓时)。当外磁场达到硬壳的矫顽磁场强度时,硬壳会被消磁,软核的累积电压会发生跳变。

这种与速度无关的脉冲每转产生两次,并通过线圈转换成电脉冲。这些脉冲产生足够的能量来操作低能量的FRAM存储器,并提供关于转数的信息。

圈数的计数无需额外的外部能量。如果外部再次供电,智能微控制器就会依据位置和转数计算出正确的值,然后将该数值发送给控制器。

The advantages and thus the benefits resulting from this technology are enormous for the user, machine manufacturer and plant operator.

 Battery-free  Environmentally friendly, maintenance-free, no need for disposal, lower administrative costs/p>

 No drive  Wear-free, maintenance-free

 Smaller design, low weight  Less space required, new application possibilities

 Fewer components  Lower susceptibility to failure

 Low consumption  Energy savings

Creative destruction

EnDra® multi-turn technology has the potential to trigger creative destruction.

It can and indeed – according to Robert Wachendorff – “will” completely change the market.

This is supported by the assertions such as the following:

  1. In Germany alone, this would probably eliminate the need to use more than 250,000 batteries and drives each year. The environmental protection aspect alone guides us along this direction.
  2. If the market fully buys into and embraces this new technology – obsolete technologies using drives and battery will be completely replaced.
  3. The lower material and production costs mean that completely new areas of application can be opened up.
  4. The limitations of outdated technologies using drives or batteries (e.g. temperature sensitivity, large space demands, maintenance requirements, high environmental pollution and onerous disposal requirements) are continuously opening up new markets, for example, in the fields of wind energy, medical technology, lift technology, mobile working machines and plant and machine construction.
  5. Drive manufacturers will experience very significant declines in sales in the multi-turn encoder segment.
Conclusion

EnDra® multi-turn technology opens up completely new areas of application for absolute encoders, for example, in lift construction, mobile machinery, medical technology, alternative power generation and in machine and apparatus construction.

EnDra® is the innovative milestone for miniaturisation, freedom from maintenance and for environmental friendliness in absolute multi-turn encoders, which will trigger this “creative destruction”.

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