Vehicular speed regulator signalling approach to desired speed - improves stability of regulation by negative weighting in accordance with temporal variation of engine revolution count

摘要

The regulator (24) issues commands (38,40) to the fuel injectors and throttle flap of a combustion engine in response to inputs from engine and gearbox output shaft tachometers (28,32). A desired speed (34) input from the accelerator pedal or a keyboard is memorised (300) for comparison (304) with the filtered (306) road speed signal. The error (308) is evaluated by a proportional-integral controller (310) with a smoothing circuit (314) incorporating integral, proportional, delay-differential and pure delay elements (316,318,320,322) for output weighting purposes. ADVANTAGE - Ride comfort is enhanced with guaranteed rapid reaction avoiding wide fluctuations of speed over steeply-graded roads.