In wheel load lateral force measuring of the vehicle for the railroad the zero point amendment modulo

摘要

PURPOSE:To enable a digital processing to be used for measurement of a wheel weight side pressure etc., of a wheel for railroad by compensating for a zero point of an output of a dynamic distortion meter. CONSTITUTION:When an original output x' of a dynamic distortion meter is branched and a proper cut-off frequency is set by a low-pass filter for processing, a DC component x0 an output can be obtained. It is equivalent to an amount of zero-point travel of the original output. Therefore, when the original output x' and the DC component x0 are sampled and held simultaneously and then A/D converted by an A/D converter 3 and then a true output x=x'-x0 is obtained by a central processing device 4, the zero point of the output of the dynamic distortion meter can be compensated for. When the DC component x0 of the output is obtained by using the low-pass filter 1, a true output x=x'-x0 can be obtained from an analog computer.