[1] Wu T X, Thompson D J. Theoretical investigation of wheel/rail non-linear interaction due to roughness excitation[J]. Vehicle System Dynamics,2000,34(5):261-282.
[3] Kunio Takeshita, Eiji Yazawa. Development of measurement device of track irregularity using inertial mid-chord offset method[J]. RTRI Report,2000,14(4):25-30.
[4] Kunio Takeshita. Error compensation method of cross level at track inspection car[J]. RTRI Report,1998,12(3):5-10.
[5] Akiyoshiy Yoshimura, Tadao Mori. Application for restoring the original waveform of railway track irregularity[J]. Railway Technology,1986,43(5):177-180(in Japanese).
[7] Wen D. Design and operation of a floating gate amplifier[J]. IEEE J. Solid State Circuits,1974,12(9):410.