This paper inquires into the jitter accumulation in digital optical fiber regenerative transmission systems. Jitter accumulation properties with the resonant circuit as the timing circuit are discussed, and a simplified formula for the jitter accumulation that adapts to that estimation in engineering is given. 本文探讨数字光纤中继系统中的抖动积累问题,具体分析谐振槽路(RC)作定时提取时的抖动积累特性,并给出适于工程估算抖动积累特性的简化公式。
It is analyzed here the causes for failure of regeneration during regenerative braking of 8K electric locomotive, and then it is introduced the working principle of improved circuit& recovering commutation circuit. 本文对8K机车在再生制动工况下,因网压突降导致再生失败的原因进行了分析,并对其改进电路&恢复换相电路的工作原理作了详细介绍。
The characteristics and structure of braking energy regenerative system of city bus are introduced, and the hardware circuit of the controller and related software are designed. 介绍了公共汽车制动能量再生系统的特点及组成,对控制器的硬件电路及软件进行了设计。
However, there are a lot of problems associated with the system, such as regeneration being cancelled out by wheel slide and trolley voltage conditions, decreases in electric braking force in the higher speed ranges, and restrictions on regenerative power determined by power supply circuit impedance. 然而,这种系统还存在许多问题,如再生能被车轮滑行和拖车电压抵消,在高速范围电制动力降低,供电电路阻抗限定了再生功率。
The first one employs the positive feedback of regenerative circuit to compare the input current, and select the output based on the comparison result. A binary-tree structure is also used to expand the design. 第一个电路利用锁存器的正反馈特性来进行比较,再使用输出选择的方输出电流,该电路使用传统的二进制树型结构进行扩展。
The second one also employs the positive feedback of regenerative circuit to compare the input current. But the output current is acquired by using rectifier circuit. A new concurrent multi-input structure is also proposed. 第二个电路同样利用锁存器的正反馈特性来进行比较,不同的是使用整流的方式输出电流,在此基础上提出了一个新的多输入并行WTA电路结构。