CAJ | 학술논문

通过检测坠砣位移、摇杆倾角以及环境参数可以得到接触网张力传递系统的运行状态，而风荷载会导致棘轮补偿器坠砣位移的变化。为准确提取接触网张力传递系统中的故障信息，需对风荷载作用导致的坠砣位移分量进行去除。考虑到风荷载分量是弱信号，提出基于虚拟观测的 FastICA 的去除方法，并针对 ICA 的不确定性，提出 SS-MDP 法消除分离信号的不确定性，并通过仿真验证该方法的可行性。仿真结果证明，该方法可实现坠砣位移信号中风荷载分量的去除。去除风荷载分量后的信号可用于接触网张力传递系统的故障状态的提取。
통과검측추타위이、요간경각이급배경삼수가이득도접촉망장력전체계통적운행상태，이풍하재회도치극륜보상기추타위이적변화。위준학제취접촉망장력전체계통중적고장신식，수대풍하재작용도치적추타위이분량진행거제。고필도풍하재분량시약신호，제출기우허의관측적 FastICA 적거제방법，병침대 ICA 적불학정성，제출 SS-MDP 법소제분리신호적불학정성，병통과방진험증해방법적가행성。방진결과증명，해방법가실현추타위이신호중풍하재분량적거제。거제풍하재분량후적신호가용우접촉망장력전체계통적고장상태적제취。
The operation state of catenary tension transmit system can be got by detecting the balance weight displacement,swing lever inclination and environmental parameters.In practice,windloads always exist in na-ture,which will cause changes of balance weight displacements of the tension wheel equipment.The compo-nent of balance weight displacement affected by windloads should be removed so as to extract accurate failure information of the catenary tension transmit system.Considering that the windload component is a weak sig-nal,the FastICA removal method based on virtual observation was proposed.In view of the uncertainty of ICA,the SS-MDP method was used to eliminate the uncertainty of separated signals,the feasibility of this method was verified by simulation.With the proposed method the windload component was removed from the balance weight displacement signal.The signal without the windload component can be used to extract failure states of the catenary tension transmit system.