Automotive vehicle speed control system
A speed control system is described for maintaining an automobile vehicle substantially at a desired target speed, comprising: actual running speed signal processing means for obtaining and processing an actual running speed signal of the vehicle; first command switch means for generating a start signal for starting a steady-speed run of the vehicle; setting means for setting the actual running speed signal processed by the signal processing means as a target signal when the start signal is generated by the first command switch means; second command switch means for generating a speed-up command signal; initial incremental means for immediately increasing the value of the target signal by a first predetermined amount after generation of the speed-up command signal; progressive incremental means for progressively increasing the value of the target signal by second predetermined amounts at predetermined time intervals during the generation of the speed-up command signal; means for storing the actual running speed signal as a new target speed signal when the speed-up command signal is turned off by the second command switch means; comparator means for comparing the actual running speed signal with the target signal and producing an output signal indicative of a difference between the actual running speed and the target signal; and speed control means, responsive to the output signal of the comparator means, for controlling the running speed of the vehicle to maintain the vehicle substantially at the desired target speed based on the output signal from the comparator means.
- Assignee:
- Nippondenso Co., Ltd., Kariya
- Patent Number(s):
- US 4650020
- OSTI ID:
- 6651473
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330603* -- Vehicle Design Factors-- Engine System
AUTOMOBILES
COMPARATOR CIRCUITS
COMPUTERIZED CONTROL SYSTEMS
CONTROL EQUIPMENT
CONTROL SYSTEMS
DATA PROCESSING
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ENGINES
EQUIPMENT
MEMORY DEVICES
PROCESSING
SIGNALS
SPEED REGULATORS
SWITCHES
TIMING CIRCUITS
VEHICLES
VELOCITY