Gear-shifting correction system for automatic transmission and correction method for gear-shifting correction system
An automatic transmission and parameter correction technology, applied in the direction of external condition input parameters, control devices, transportation and packaging, etc., can solve the problems of driving comfort, fuel economy and safety reduction, safety, power and fuel economy reduction and other issues to achieve the effect of improving driving safety, improving the level of intelligence, and responding quickly
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[0107] Example: Take a vehicle driving in 2 gears on a slippery road with low adhesion, the vehicle speed is 30km / h, and the driver accelerates and overtakes as an example, combined Figure 1 to Figure 4 , Describe the shift correction process of the automatic transmission as follows:
[0108] Choose a compact car with a curb weight of 1.2 tons and an automatic transmission gear of 6. The basic shift control parameters include a shift response time of 100 milliseconds. The threshold is calibrated according to the above threshold calibration method. The front and rear wheel speed difference threshold nth The first throttle opening threshold αth1 is 30%; the second throttle opening threshold αth2 is 10%; the first vehicle speed change rate threshold -vth1 is -0.15; the second vehicle speed change rate threshold vth2 is 0.12; The third throttle opening threshold αth3 is 35%; the fourth throttle opening threshold αth4 is 5%; the first throttle opening change rate threshold dαth1 is 4...
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