METHOD FOR GENERATING A TORQUE SETPOINT FOR THE ELECTRIC MACHINES OF A POWERTRAIN OF A VEHICLE AND POWERTRAIN OF A VEHICLE

• Main Authors: BEN BELDI, Nesrine, MERIENNE, Ludovic
• Format: Patent
• Language: English; French
• Published: 13.12.2018
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

A method for generating a torque setpoint for the electric machines (ME, HSG) of a powertrain (GMP) of a vehicle, comprising at least one gearbox with controlled dog clutches, a main electric machine (ME) capable of transmitting torque to the wheels of the vehicle over two separate gearbox ratios, and a secondary electric machine (HSG) capable of providing compensation torque to the wheel during ratio changes of the main machine, in which the maximum and minimum torques imposed on the two electric machines in the established ratio are calculated depending on the predicted future state of a shared power supply battery, characterised in that, in anticipation of a change of ratio of the main machine (ME), a new limit is imposed in advance on the torques of the two electric machines, stricter than that of the established ratio, in order to ensure, without discontinuity during the change in ratio, the synchronisation of the main machine (ME) in the new ratio and the torque compensation by the secondary machine (HSG). Procédé d'élaboration d'une consigne de couple aux machines électriques (ME, HSG) d'un groupe motopropulseur (GMP) de véhicule, comportant au moins une boîte de vitesses à crabots pilotés, une machine électrique principale (ME) pouvant transmettre du couple aux roues du véhicule sur deux rapports de boîte distincts, et une machine électrique secondaire (HSG) capable fournir un couple de compensation à la roue pendant les changements de rapport de la machine principale, dans lequel les couples maximum et minimum imposés aux deux machines électriques en rapport établi sont calculés en fonction d'un état prévisionnel à terme d'une batterie d'alimentation commune, caractérisé en ce que, en anticipation d'un changement de rapport de la machine principale (ME), on impose par avance une nouvelle limitation des couples des deux machines électriques plus stricte que celle du rapport établi, afin d'assurer sans discontinuité pendant le changement de rapport, la synchronisation de la machine principale (ME) sur le nouveau rapport et la compensation du couple par la machine secondaire (HSG).