跟踪微分器在磁浮列车悬浮间隙处理中的应用

为了实现磁浮列车稳定悬浮控制,提出采用跟踪微分器结合联合滤波的悬浮间隙处理方法,以消除悬浮传感器过轨道接缝时的信号畸变,改善随机噪声对控制精度带来的不利影响.跟踪微分器可以反映实际带噪声信号的广义导数,其利用三路间隙信号广义导数特征对信号进一步滤波,算法计算量小,易于实现.阐述了跟踪微分器的原理及特征并进行了性能仿真分...

Application of Tracking Differentiator in Ma-glev Train Suspension Gap Disposal

In order to stabilize the suspension control of maglev train,a suspension gap disposal method that combines tracking differentiator with jointed filtering is proposed,in order to eliminate the signal distortion when suspension sensors pass through the track joints,and repress the adverse effect of random noise on the control accuracy.The tracking differentiator could reflect the actual generalized derivatives of signals with noise,and further filter the signals by using the generalized derivative characteristics of the three-way gap signal,featuring the advantages of small amount of calculation and easy implement.In this paper,the principle and characteristics of tracking differentiator with numerical simulation analysis are described.Finally,the feasibility and effectiveness of tracking differentiator in processing the suspension gap signal are proved by numerical simulation using tracking differentiator combined with measured data.