A Sensorless Method for Controlling the Closure of a Contactor
A Sensorless Method for Controlling the Closure of a Contactor
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DOI：
10.1109/tmag.2007.904355
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发表时间：
2007-09
影响因子：
2.1
通讯作者：
A. Espinosa;J.-R.R. Ruiz;X. A. Morera
中科院分区：
文献类型：
--
作者：
A. Espinosa;J.-R.R. Ruiz;X. A. Morera
我们提出了一种新的闭环无传感器方法，用于减少接触器闭合时的触点弹跳。已经描述了解决该问题的几种方法;它们中的大多数使用某种传感器来建立真实的时间中的触点的位置和速度，而在我们的方法中，通过仅使用接触器线圈的电流和电压值作为控制输入来计算移动电枢和触点的位置和速度。模糊控制器将衔铁的位置和速度作为输入，并提供控制触点闭合速度的强度设定点作为输出。此外，我们还开发了一种低成本的电子模块，用于实现控制系统并将其集成到接触器中。该模块完全消除了反弹，从而防止触点重复接通和断开电路。
We propose a new closed-loop sensorless method for reducing contact bounce on closure of a contactor. Several approaches to the problem have already been described; most of them use some kind of sensor to establish the position and speed of the contacts in real time, whereas in our approach, the position and speed of the moving armature and contacts are calculated by using only the current and voltage values of the contactor coil as control inputs. A fuzzy controller takes as input the position and velocity of the armature and provides as output an intensity set point that controls the velocity of the closure of the contacts. Furthermore, we have developed a low-cost electronic module that implements the control system and integrates it in the contactor. The module eliminates the bounces completely and thus prevents the contacts from repeatedly making and breaking the circuit.