Method for power shifting in hybrid automatic transmissions by means of a dual-clutch strategy involving transformation

A method for output-neutral load switching of hybridized automatic transmissions with an arbitrary number of gears and a number n of clutches and with a first of p drive units and at least one further of p drive units on the basis of a transformation of real transmission variables of the hybridized automatic transmission to virtual variables of a dual-clutch transmission with associated dual-clutch-transmission-specific basic shifting modes comprising the following steps:

• initiation of a shifting process for a gear-change pair (i, j) from a gear i with an actual gear ratio (yi) to a gear j with a target gear ratio (yj) in dependence on a target gear preselection,
• sensing of actual variables of the hybridized automatic transmission and of the first and/or of the at least one further drive unit, wherein the actual variables comprise at least one of the following variables:
• a drive shaft rpm (ωin) of at least one drive shaft of the hybridized automatic transmission,
• an output shaft rpm (ωout) of an output shaft of the hybridized automatic transmission,
• a drive torque (Tin) made available by the first and/or by the at least one further drive unit and present at the at least one drive shaft of the hybridized automatic transmission,
• currently set clutch capacities (Tcap) of the n clutches and/or
• a minimally and/or maximally available drive torque (Tin,min, Tin,max) of the first and/or of the at least one further drive unit,
• selection of at least one transformation factor in dependence on at least one actual variable and on the gear-change pair (i, j) from tables of states,
• calculation of at least one transformation equivalent for the calculation of at least one dual-clutch-transmission-specific actuating quantity by the basic shifting mode of the dual-clutch transmission in dependence on at least one actual variable and/or on the at least one transformation factor,
• calculation of at least one dual-clutch-transmission-specific actuating quantity by a basic shifting mode in dependence on at least one actual variable and/or on the at least one transformation factor and/or on the at least one transformation equivalent,
• calculation of at least one automatic-transmission-specific actuating quantity in dependence on at least one actual variable and/or on the at least one transformation factor and/or on the at least one transformation equivalent and/or on the at least one dual-clutch-transmission-specific actuating quantity and
• implementation of the at least one automatic-transmission-specific actuating quantity by at least one actuator and by the at least one further drive unit.