Y2000-62093-V-110 0012543闭环脉宽调制直流-直流变换器的抽样数据模拟与分析=Sampled-data modeling and analysis of closed-loopPWM DC-DC converters[会,英]/Fang,C.-C.&Abed.E.H.//1999 IEEE International Symposium onCircu...Y2000-62093-V-110 0012543闭环脉宽调制直流-直流变换器的抽样数据模拟与分析=Sampled-data modeling and analysis of closed-loopPWM DC-DC converters[会,英]/Fang,C.-C.&Abed.E.H.//1999 IEEE International Symposium onCircuits and Systems,Vol.5 of 6.—V-110～V-115(PC)介绍了固定开关频率连续与不连续传导型脉宽调制(PWM)直流-直流(DC-DC)变换器的通用方块图模型。讨论了这些模型电流型与电压型控制。根据这些模型导出了详细的非线性与线性化抽样数据动态特性。分析了渐近轨道稳定性。导出了声频磁化率和输出阻抗。利用这种方法,可以不费力地分析不连续传导型和电流型控制。展开更多
We study a second-order parabolic equation with divergence form elliptic operator,having a piecewise constant diffusion coefficient with two points of discontinuity.Such partial differential equations appear in the mo...We study a second-order parabolic equation with divergence form elliptic operator,having a piecewise constant diffusion coefficient with two points of discontinuity.Such partial differential equations appear in the modelization of diffusion phenomena in medium consisting of three kinds of materials.Using probabilistic methods,we present an explicit expression of the fundamental solution under certain conditions.We also derive small-time asymptotic expansion of the PDE’s solutions in the general case.The obtained results are directly usable in applications.展开更多
文摘Y2000-62093-V-110 0012543闭环脉宽调制直流-直流变换器的抽样数据模拟与分析=Sampled-data modeling and analysis of closed-loopPWM DC-DC converters[会,英]/Fang,C.-C.&Abed.E.H.//1999 IEEE International Symposium onCircuits and Systems,Vol.5 of 6.—V-110～V-115(PC)介绍了固定开关频率连续与不连续传导型脉宽调制(PWM)直流-直流(DC-DC)变换器的通用方块图模型。讨论了这些模型电流型与电压型控制。根据这些模型导出了详细的非线性与线性化抽样数据动态特性。分析了渐近轨道稳定性。导出了声频磁化率和输出阻抗。利用这种方法,可以不费力地分析不连续传导型和电流型控制。
基金supported by the National Science Foundation of USA (Grant No. DMS1206276)National Natural Science Foundation of China (Grant No. 1128101)the Research Unit of Tunisia (Grant No. UR11ES53)
文摘We study a second-order parabolic equation with divergence form elliptic operator,having a piecewise constant diffusion coefficient with two points of discontinuity.Such partial differential equations appear in the modelization of diffusion phenomena in medium consisting of three kinds of materials.Using probabilistic methods,we present an explicit expression of the fundamental solution under certain conditions.We also derive small-time asymptotic expansion of the PDE’s solutions in the general case.The obtained results are directly usable in applications.
