Abstract: Referring former methods of driver’s intention inference, according to vehicle dynamics, the balance throttle open on plane and straight road and relative throttle open are defined. Based on these, driver demand acceleration characteristics are discussed and driver intentions on plane and straight road are classified to five relative styles. Driver usual operation characteristics under these five classic conditions are summarized. It is proved that driving environment is equivalent to certain driver intention and they can be integrated to infer. A multi-input single-output fuzzy reasoning model is established and the fuzzy rules are based on test data and driver experiences. This model can be applied to micro controller unit and an improved real-time algorithm is brought up. Validated with the test data, this model can infer the intentions quite well.

Key words: Driver demand acceleration characteristics, Fuzzy reasoning, Driver’s intention, Driving environment, MCU control