Abstract

X-rays are devices immensely used for diagnosis and treatment in medicinal field. X-rays are very popular as they are used in non-destructive testing. An X-ray device uses a high voltage power supply which can be produced by DC-DC converters. Resonant converters are prominent among the dc-dc converters for X-ray application as the switching is done at zero current and zero voltage. This paper presents a LCC resonant converter based PID controller tuned with optimization algorithms for non-linear system. Differential evolution optimization (DEO), grey wolf optimization (GWO) and grasshopper optimization algorithms (GOA) are used to identify the local minima in time domain system. The objective functions considered are minimization of integral absolute error (IAE), integral square error (ISE) and integral time absolute error (ITAE). The convergence curve is also plotted for the different optimization algorithms using MATLAB Simulink to study the convergence time.

中文翻译：

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LCC X射线谐振转换器的误差测量

摘要

X射线是医学领域中大量用于诊断和治疗的设备。X射线非常广泛地用于无损检测中。X射线设备使用可由DC-DC转换器产生的高压电源。谐振转换器在X射线应用的dc-dc转换器中很重要，因为切换是在零电流和零电压下完成的。本文提出了一种基于LCC谐振变换器的PID控制器，并用非线性系统的优化算法对其进行了优化。使用差分进化优化（DEO），灰太狼优化（GWO）和蚱hopper优化算法（GOA）来识别时域系统中的局部最小值。考虑的目标函数是最小化积分绝对误差（IAE），积分平方误差（ISE）和积分时间绝对误差（ITAE）。