Method and apparatus for adaptively shifting a powershift transmission

A control apparatus for a transmission having (i) an initial gear ratio, (ii) a first gear ratio, (iii) a second gear ratio, and (iv) an output shaft, comprising:

• an actuator assembly which disengages said first gear ratio from said output shaft and engages said second gear ratio to said output shaft in response to an upshift signal;
• a memory device which stores (i) a conservative upshift point and (ii) an aggressive upshift point;
• and
• a controller operable to (i) read said aggressive shift point and said conservative shift point from said memory device, (ii) determine that the transmission is operating in said aggressive mode of operation when if the transmission reaches said aggressive shift point within a first predetermined time period after an upshift from said initial gear ratio to said first gear ratio, (iii) determine that the transmissions is operating in said conservative mode of operation when if the transmission fails to reach said aggressive shift point within the first predetermined time period after an upshift from said initial gear ratio to said first gear ratios, and (iv) generate said upshift signal at said aggressive upshift point if said transmission is operating in said aggressive mode of operation or generate said upshift signal at said conservative upshift point if said transmission is operating in said conservative mode of operation.