Motor vehicles – With means responsive to speed of vehicle for maintaining... – Including electrically actuated servomechanism
Patent
1988-04-13
1989-06-20
Mitchell, David M.
Motor vehicles
With means responsive to speed of vehicle for maintaining...
Including electrically actuated servomechanism
74857, 123352, 364148, 364174, 36443105, B60K 3104
Patent
active
048402451
ABSTRACT:
In apparatus for controlling speed of a vehicle having an internal combustion engine and a power transmission mechanism as a controlled object, intake airflow, vehicle speed are detected and then an air-fuel mixture supply is controlled so that the vehicle travelling speed approaches a given cruising speed. The cruising speed is set in accordance with detected vehicle speed, while a target intake airflow is set to correspond to minimum fuel amount capable of maintaining the cruising speed on the basis of a pattern of correlation between fuel amount and intake airflow predetermined in correspondence with the cruising speed. The apparatus comprises an integral-added optimal regulator for determining feedback amount(s) of controlled variable(s) of the air-fuel mixture supply unit on the basis of operating equation(s) used for estimating internal state of the controlled object predetermined in accordance with a dynamic model of the system relating to the controlled object.
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Kamei Eiichi
Namba Hideaki
Culbreth Eric
Mitchell David M.
Nippondenso Co. Ltd.
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