ESTIMATION DEVICE, ESTIMATION METHOD AND PROGRAM

• Main Authors: SHIMOKAWA YOSHIYUKI, NAKAGAWA JUNICHI, FUJIMOTO TAKAHIRO, KIKKO SATOSHI, KONDO OSAMU, MINAMI HIDEKI, SHINAGAWA DAISUKE
• Format: Patent
• Language: Chinese; English
• Published: 25.02.2022
• Subjects: MEASURING; PERFORMING OPERATIONS; PHYSICS; PREVENTING DERAILING OF RAIL VEHICLES; RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES ORARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; RAILWAYS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR; TRANSPORTING; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAILVEHICLES

An estimation device (400) derives the external force acting on the force application points (31a, 31b, 32a, 32b) of a truck frame 16 on the basis of acceleration data measured by acceleration sensors (21a, 21b) attached to journal boxes (17a, 17b). The estimation device (400) also derives the displacement distribution of the truck frame (16) by subjecting the distribution of the external force acting on the truck frame (16) to the equation of motion, which expresses the vibrations of the truck frame (16), and solving said equation of motion. 推定装置(400)基于以被安装于轴箱(17a、17b)的加速度传感器(21a、21b)测定的加速度的数据来导出作用于台车架16的着力点(31a、31b、32a、32b)的外力。推定装置(400)通过将作用于台车架(16)的外力的分布赋予表示台车架(16)的振动的运动方程来求解该运动方程，从而导出台车架(16)的位移分布。