Research Article
Adaptive Gearshift Strategy Based on Generalized Load Recognition for Automatic Transmission Vehicles
Table 4
Contrastive analysis of different gearshift schedules.
| Working condition |
Adaptive gearshift strategy based on generalized load |
Dynamic three-parameter shift schedule | Formulation principle | | | | | | |
| Flat road | 0 | 10 | 20.3 | 0.616 | 10 | 20.3 | Boundary point, maintain the original gear | 0 | 20 | 20.3 | 0.616 | 20 | 20.3 | Acceleration is equal | 0 | 30 | 21.6 | 0.815 | 30 | 21.6 | Acceleration is equal | 0 | 40 | 25.6 | 1.188 | 40 | 25.6 | Acceleration is equal | 0 | 60 | 32.1 | 2.202 | 60 | 32.1 | Boundary point, upshift to limit speed |
⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
| Slope road (5.2%) | 147 | 10 | 23.6 | 0.122 | 10 | 23.6 | Boundary point, maintain the original gear | 147 | 20 | 23.6 | 0.122 | 20 | 23.6 | Acceleration is equal | 147 | 30 | 24.2 | 0.261 | 30 | 24.2 | Acceleration is equal | 147 | 40 | 28 | 0.723 | 40 | 28 | Acceleration is equal | 147 | 60 | 35.8 | 1.804 | 60 | 35.8 | Boundary point, upshift to limit speed | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
| Slope road (14%) | 389 | 10 | 27.9 | 0.064 | 10 | 27.9 | Boundary point, maintain the original gear | 389 | 20 | 27.9 | 0.064 | 20 | 27.9 | Boundary point, maintain the original gear | 389 | 30 | 28.5 | 0.064 | 30 | 28.5 | Boundary point, maintain the original gear | 389 | 40 | 33.1 | 0.064 | 40 | 33.1 | Boundary point, upshift to limit speed | 389 | 60 | 42.1 | 1.146 | 60 | 42.1 | Boundary point, upshift to limit speed | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
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