Hydrogenerator rotors : zero frequency of torsional vibration and resonance 水電機組轉子軸系扭振零頻的計算和共振分析
Furthermore , the constraint condition of the transfer function at the zero frequency and the phase invariability condition of transfer function are presented 與傳遞函數極點的理論關系,得到了傳遞函數低頻約束條件和傳遞函數相位不發生畸變的補充條件。
A kind of arithmetic of recursive least squares ( rls ) method with forgetting factor combined with model matching of zero frequency was adopted to identify the object online 采用了帶遺忘因子的遞推最小二乘和基于零頻率的模型匹配的聯合辨識算法對空調系統進行在線辨識。