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首页> 外文期刊>Industrial Informatics, IEEE Transactions on >Event-Based Control System Suitable for High-Precision Pulsed Current Source Applications With Improved Switching Behavior
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Event-Based Control System Suitable for High-Precision Pulsed Current Source Applications With Improved Switching Behavior

机译：基于事件的控制系统，适用于具有改进的开关性能的高精度脉冲电流源应用

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摘要

This work presents a control system suitable for high-precision pulsed current sources. The proposed control system is based on the detection of events so as to define changes in the power converter state to produce the required current waveform with a good dynamic response. Additionally, this control system is designed to regulate the flat-top current with a well-defined precision. In order to mitigate the effect of the measurement noise, an estimation algorithm for the controlled current is incorporated. This algorithm generates a filtered version of the controlled variable without affecting the control dynamics. The use of the estimated current allows to improve the detection of the events and to avoid an increase in the number of commutations due to possible erratic comparisons. Then, the estimator gains are tuned by using genetic algorithm techniques to optimize the root-mean-square value for a typical pulse. Furthermore, in order to independently perform the required set of tasks, the proposed control system is implemented by using a digital platform based on a field-programmable gate array. Additionally, due to the demanding precision in these applications, different considerations regarding its implementation, such as the digital wordlength, binary point position, rounding method, and overflow behavior, have been taken into account. Experimental results obtained from the application of the proposed control system to a laboratory prototype are presented.
机译：这项工作提出了一种适用于高精度脉冲电流源的控制系统。所提出的控制系统基于事件的检测，以便定义功率转换器状态的变化，以产生具有良好动态响应的所需电流波形。此外，该控制系统旨在以精确定义的精度调节平顶电流。为了减轻测量噪声的影响，合并了用于受控电流的估计算法。该算法生成受控变量的过滤版本，而不会影响控制动力学。估计电流的使用允许改进事件的检测，并避免由于可能的不稳定比较而导致换向次数增加。然后，通过使用遗传算法技术来优化估算器增益，以优化典型脉冲的均方根值。此外，为了独立地执行所需的任务集，通过使用基于现场可编程门阵列的数字平台来实现所提出的控制系统。此外，由于这些应用程序对精度的要求很高，因此已考虑到有关其实现的不同考虑，例如数字字长，二进制点位置，舍入方法和溢出行为。提出了从拟议的控制系统应用于实验室原型获得的实验结果。

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