In general, it is important to operate the; airgap length uniformly for improving the system efficiency independent of the flatness of the reaction plate in a railway propulsion system by a linear induction motor （LI...In general, it is important to operate the; airgap length uniformly for improving the system efficiency independent of the flatness of the reaction plate in a railway propulsion system by a linear induction motor （LIM）. And it is possible to operate the LIM propulsion system efficiently without a change of the LIM capacity through the airgap length control on the sloped rail. So, in this research, the authors introduce an airgap control system to control the airgap length which depends on the flatness of the secondary reaction plate when the LIM is operated, and design a rotary small-scaled LIM and its airgap control system before manufacturing the real system. Then, the authors analyze some characteristics of the LIM （thrust and normal force, input current, efficiency and power factor）, and through the LIM control modeling, the authors finally analyze an effect of the airgap-length control of the LIM by the airgap control system.展开更多
Flavor changing effects on the processes t → cA, e^＋e^- → bs^-, e^＋e^- →bs^-h and pp → bs^- in the LHT model are investigated in this paper. We calculate the one-loop level contributions from the T-parity odd mi...Flavor changing effects on the processes t → cA, e^＋e^- → bs^-, e^＋e^- →bs^-h and pp → bs^- in the LHT model are investigated in this paper. We calculate the one-loop level contributions from the T-parity odd mirror fermions and gauge bosons. The results show that the top quark rare decay t --~ cA in the LHT model can be significantly enhanced relative to that in the SM. The bs^- production at linear colliders in the LHT model can enhance the SM cross section a lot and reach 0.1 fb in some parameter space allowed in the experiment. But the heavy gauge boson and mirror fermion loops have small contribution to the processes pp --~ 5~ and e＋e- →bs^-h. So the LHT effect on e^＋e^- → bs^- might be detected at future linear colliders, while it is too sma/l to be seen for the e^＋e^- →bs^-h and pp → bs^- processes at future linear colliders and LHC.展开更多
文摘In general, it is important to operate the; airgap length uniformly for improving the system efficiency independent of the flatness of the reaction plate in a railway propulsion system by a linear induction motor （LIM）. And it is possible to operate the LIM propulsion system efficiently without a change of the LIM capacity through the airgap length control on the sloped rail. So, in this research, the authors introduce an airgap control system to control the airgap length which depends on the flatness of the secondary reaction plate when the LIM is operated, and design a rotary small-scaled LIM and its airgap control system before manufacturing the real system. Then, the authors analyze some characteristics of the LIM （thrust and normal force, input current, efficiency and power factor）, and through the LIM control modeling, the authors finally analyze an effect of the airgap-length control of the LIM by the airgap control system.
基金Supported by the National Natural Science Foundation of China under Grant Nos.11105083,10947139,10947022,11105036,11147151, and 11205070Shandong Province Natural Science Foundation under Grant No.ZR2012AQ017
文摘Flavor changing effects on the processes t → cA, e^＋e^- → bs^-, e^＋e^- →bs^-h and pp → bs^- in the LHT model are investigated in this paper. We calculate the one-loop level contributions from the T-parity odd mirror fermions and gauge bosons. The results show that the top quark rare decay t --~ cA in the LHT model can be significantly enhanced relative to that in the SM. The bs^- production at linear colliders in the LHT model can enhance the SM cross section a lot and reach 0.1 fb in some parameter space allowed in the experiment. But the heavy gauge boson and mirror fermion loops have small contribution to the processes pp --~ 5~ and e＋e- →bs^-h. So the LHT effect on e^＋e^- → bs^- might be detected at future linear colliders, while it is too sma/l to be seen for the e^＋e^- →bs^-h and pp → bs^- processes at future linear colliders and LHC.
