当前配电自动化系统中普遍采用的通信总线方式,总线末端和输配电设备二次控制电缆往往混合敷设,由于施工接线错误或者系统干扰,容易在通信总线上感应产生较高的过电压,使通信总线受到干扰甚至损坏,本文介绍一种CPD总线模块的保护方案,能有效提升通信总线的安全水平,保护灵敏的控制设备及仪表通信模块免遭强电干扰及破坏。
随着各种先进医疗设备(磁共振成像(MRI)、二维图像彩色B超仪、全身螺旋CT扫描仪、单(双)光子发射计算机断层扫描机、全自动生化仪、采用电磁波技术的碎石机、胃肠断层扫描机、高频电刀、多功能微波治疗仪等)的引进与使用,各种电子电路和电力电子技术在现代医院的应用,生物医学工程在现代化医院中所起的作用越来越重要.
A new longtermeffective HPD method in short named HHPDCS is devised to solve nonhomogeneous linear autonomy system based on Chebyshev orthogonal polynomials series of the second kind and homogenized integration technique.The algorithm can avoid inversing matrixes from which HPDF suffers and conquer the restriction that stimulus must be periodic,from which HHPDF suffers,so the method can be used for any kind of right stimulus.The results of the two examples discussed show that the longtermeffective HHPDCS is more effective.In addition,HHPDCS has several other advantages,such as simpler in designing and computational format,more precise,easier to be generalized and implemented etc.
