【摘要】 本文提出一种快速数字仿真算法,用以分析计算开关型电压调节系统的动态响应。与现有算法相比,作者建议的算法计算速度大大提高,原因是充分利用了这类系统的物理特征。算法中将系统分离成两个串联的网络—开关变换器和控制电路,二者间的负载效应可忽略,并用解代数方程的线性(或抛物线)插值法解边界方程,确定系统拓扑在开关元件通断时的转换时刻。文中就两个开关型调压系统实例的计算机仿真结果对作者建议的算法与文献中公布的较好算法作了比较。 这种新算法是针对开关型直流电压调节系统编制的。但也可推广应用于一般的分段线性控制系统的数字仿真。更多还原

【Abstract】 A new algorithm is presented for the fast simulation of switched-mode regulators. The key features are:i)the system is divided into two cascade networks- -the DC-DC converter and the control circuit, assuming there are no load effects between them. ii)The linear interpolation method is used for solving boundary-equations in order to determine the instants at which the system topology switches. In the end, the new algorithm is compared with another one, based upon the computer simulation results of two switching systems.Although the new algorithm is developed to simulate switched-mode regulators, it can also be used for general piecewise-linear systems.更多还原