The characteristics of hemiplegic gait present unsteadiness in stance phase, incomplete swing in affected limb and excess tilt of pelvis.
偏瘫患者的步态特点为患肢支撑不稳、摆动不全和骨盆过度倾斜。
An algorithm based on the magnitude and phase Angle of the generalized phasor to measure instantaneous frequency and swing frequency while the power swing occurred is presented.
提出了一种基于综合相量幅值和相位变化规律实时测量电力系统振荡中振荡频率及瞬时频率的算法，利用三相电流经相应变换获得综合相量。
Based on the relative variation of impedance during power swing, a novel phase selector for high voltage transmission lines is proposed.
提出了一种基于阻抗相对变化的高压线路保护选相新原理，用作振荡期间的选相元件。
HV and EHV transmission lines are equipped with split-phase breaker. If a longer reclosing time is setting in a heavy load line, the system may swing after the trip without fault of remote breaker.
高压、超高压输电线路的开关为分相开关，当对侧开关单相偷跳后，在线路负荷比较重、同时重合闸动作时间比较长的情况下可能引发系统振荡。
HV and EHV transmission lines are equipped with split-phase breaker. If a longer reclosing time is setting in a heavy load line, the system may swing after the trip without fault of remote breaker.
高压、超高压输电线路的开关为分相开关，当对侧开关单相偷跳后，在线路负荷比较重、同时重合闸动作时间比较长的情况下可能引发系统振荡。
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