Torque controlled drive train`s operation control system for motor vehicle, has module calculating resistive torque returned to train and corresponding to passage torque of backlash, and another module calculating torque threshold value

摘要

#CMT# #/CMT# The system has a preventive authorization unit (38) with a calculation module (44) connected to a resistive torque calculation module (42). The module (44) calculates a resistive torque value that is returned to a drive train (12) and corresponds to a passage torque of a transmission backlash. The unit (38) has a torque threshold calculation module (46) connected to the modules (42, 44). The module (46) calculates and delivers the torque threshold value to the drive train according to a numerical relation, for controlling the drive train. #CMT#USE : #/CMT# Used for controlling the operation of a torque controlled drive train of a traction chain of a motor vehicle, where the drive train is connected to wheels of the vehicle (claimed) for rotating or braking the wheels through a transmission. #CMT#ADVANTAGE : #/CMT# The resistive torque value calculation module calculates the resistive torque value that is returned to the drive train and corresponds to the passage torque of the transmission backlash, in a precise manner. The torque threshold calculation module calculates and delivers the torque threshold value to the drive train according to the numerical relation for controlling the drive train, thus permitting the continuous passage of transmission backlashes to soften transmission backlashes and eliminating surges and oscillations of the transmission. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a traction chain of a motor vehicle. 10 : Traction chain 12 : Drive train 14, 16 : Wheels 18 : Transmission 30 : Torque controlled drive train`s operation control system 32 : Torque sensor 34 : Position sensor 36 : Vehicle speed sensor 38 : Preventive authorization unit 42 : Resistive torque calculation module 44 : Resistive torque value calculation module 46 : Torque threshold calculation module.