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Title: System and method for automatically controlling cruising speed of a vehicle

Abstract

This patent describes a system for automatically controlling a vehicle speed to a desired cruise speed. It comprises an actuator for actuating an engine driving force adjusting mechanism to change an operating variable of the engine driving force adjusting mechanism so that the vehicle speed is controlled; first means for operatively commanding the actuator to actuate the engine driving force adjusting mechanism so that the vehicle speed is changed at a constant rate, and for operatively commanding the actuator to actuate the engine driving force adjusting mechanism so that the vehicle speed is maintained; second means for detecting the vehicle speed; third means for setting a first initialize signal and providing the first initialize signal for the actuator during a first initialization control for the actuator to prevent a drop in vehicle speed immediately after the first means operatively commands the actuator to actuate the engine driving force adjusting mechanism so that the vehicle speed is changed at the constant rate; fourth means for setting a tap-up to initialize signal and providing the tap up initialize signal for the actuator during a tap-up initialize for the actuator so as to slightly increase the vehicle speed immediately after the first meansmore » operatively commands the actuator to change the vehicle speed; fifth means for setting a small initialize signal and for providing the small initialize signal for the actuator during a small initialize control to improve a response characteristic of the actuator to a control signal. The small initialize signal being set so as to have the predetermined functional relationship to the first initialize signal value.« less

Inventors:
; ; ; ; ;
Publication Date:
OSTI Identifier:
5375946
Patent Number(s):
US 4845622
Assignee:
Nissan Motor Co. Ltd., Yokohama
Resource Type:
Patent
Resource Relation:
Patent File Date: 16 Oct 1987
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; INTERNAL COMBUSTION ENGINES; COMPUTERIZED CONTROL SYSTEMS; ACTUATORS; CONTROL SYSTEMS; OPERATION; SIGNAL CONDITIONING; VEHICLES; VELOCITY; ENGINES; HEAT ENGINES; 330100* - Internal Combustion Engines; 990200 - Mathematics & Computers

Citation Formats

Suzuki, K, Konish, K, Iwaoka, T, Yamaguchi, Y, Hori, E, and Sekiguchi, S. System and method for automatically controlling cruising speed of a vehicle. United States: N. p., 1989. Web.
Suzuki, K, Konish, K, Iwaoka, T, Yamaguchi, Y, Hori, E, & Sekiguchi, S. System and method for automatically controlling cruising speed of a vehicle. United States.
Suzuki, K, Konish, K, Iwaoka, T, Yamaguchi, Y, Hori, E, and Sekiguchi, S. Tue . "System and method for automatically controlling cruising speed of a vehicle". United States.
@article{osti_5375946,
title = {System and method for automatically controlling cruising speed of a vehicle},
author = {Suzuki, K and Konish, K and Iwaoka, T and Yamaguchi, Y and Hori, E and Sekiguchi, S},
abstractNote = {This patent describes a system for automatically controlling a vehicle speed to a desired cruise speed. It comprises an actuator for actuating an engine driving force adjusting mechanism to change an operating variable of the engine driving force adjusting mechanism so that the vehicle speed is controlled; first means for operatively commanding the actuator to actuate the engine driving force adjusting mechanism so that the vehicle speed is changed at a constant rate, and for operatively commanding the actuator to actuate the engine driving force adjusting mechanism so that the vehicle speed is maintained; second means for detecting the vehicle speed; third means for setting a first initialize signal and providing the first initialize signal for the actuator during a first initialization control for the actuator to prevent a drop in vehicle speed immediately after the first means operatively commands the actuator to actuate the engine driving force adjusting mechanism so that the vehicle speed is changed at the constant rate; fourth means for setting a tap-up to initialize signal and providing the tap up initialize signal for the actuator during a tap-up initialize for the actuator so as to slightly increase the vehicle speed immediately after the first means operatively commands the actuator to change the vehicle speed; fifth means for setting a small initialize signal and for providing the small initialize signal for the actuator during a small initialize control to improve a response characteristic of the actuator to a control signal. The small initialize signal being set so as to have the predetermined functional relationship to the first initialize signal value.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {7}
}