Torque measurement device of an automatic transmission vehicle and torque measurement method using the same

摘要

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-contact torque measuring apparatus for an automatic transmission and a torque measuring method using the same, To provide a contactless torque measuring device capable of preventing a shift shock caused by torque fluctuation and an excessive stress on a turbine input shaft by measuring and controlling an acting torque through a torsional strain acting on the input shaft with precision An optical sensor capable of detecting a twist strain of the shaft by the phase difference of light without attaching directly to the turbine input shaft that rotates at a high speed and transmits the power and a light sensor which is fastened with a constant gap at both ends of the turbine input shaft, To detect the phase difference period And a phase difference period of the light source passing through the gear is detected by the optical sensor, and the operation torque value converted into the electric signal at the input processing interface of the TCU is calculated as a relative torque value which is compared with the initial torque value, A torque measuring device of an automatic transmission vehicle in which a TCU that commands accurate torque control by comparing with a safety limit torque value drives a hydraulic pressure control valve, shift control valves A and B, and a damper clutch control valve, and torque The present invention relates to a measurement method.