<正> A vast amount of data recorded by spacecraft have given the possibility to determine precisely the diffusion coeffi......

Due to variable time for charge collection,energy resolution of nuclear detectors declines, especially compound semicond......

研究了压电陶瓷（PZT）驱动电源对不规则信号的动态响应特性。以正弦信号为输入信号研究了此驱动电源的频率响应特性，当输入信号频率在0......

建立了从PWM逆变电源、电缆到电机的传动系统模型，考虑了振荡频率对电缆参数的影响。通过仿真电机端子上的PWM脉冲反射波瞬间电压，建......

This thesis describes the design and achievement of a circuit enables to drive PZT by high voltage control. During this ......