short-period oscillation

Self-tuning PID control parameters results virtually have no overshoot and get stability in short time, and have less oscillation at the set target angle value.

从控制结果上参数自调整PID控制结果几乎没有超调，稳定时间短，在设定的目标角度值附近振荡少。

The short-term oscillation of temperature in upper layer in Central South China Sea

南海中部上层海洋温度的短周期振动

PWM rectifier current-loop can be designed to guarantee stability. However, grids short-circuit impedance and distributed capacitance will affect the stability of PWM rectifier leading to grid current oscillation and a large amount of harmonics.

尽管单相PWM整流器设计时，能够保证电流环稳定，然而电网短路阻抗以及分布电容等参数将对PWM整流器的稳定性产生影响，导致电网电流振荡，产生大量的谐波。

Short circuit current detection and protection scheme of IGBT auxiliary inverter developed for 8K electric locomotive is suggested, with the test result given, and surge& oscillation of experimental waveform analyzed.

介绍了为8K型电力机车开发的IGBT辅助逆变器的短路电流检测和保护方案，给出了试验结果，分析了试验波形的浪涌和振荡现象。