Vehicle motion estimating system

Patent · Tue Jul 14 00:00:00 EDT 1987

OSTI ID:6123998

Ito, K; Kawabe, T

This patent describes a vehicle motion estimating system comprising: means for sensing a steering wheel angle and producing a signal indicative of the steering wheel angle; means for sensing a vehicle speed determining an actual value of the vehicle speed, and producing a signal indicative of the speed; means for sensing a first motion variable determining an actual value of the first motion variable, and producing a signal; means for sensing a second motion variable determining an actual value and producing a signal indicative of the second motion variable; and processing means, with inputs receiving the signals produced by the steering wheel angle, vehicle speed sensing means and first and second motion variable sensing means, for estimating from the signals at least a third variable defining a motion of the controlled vehicle; the processing means comprising state discriminating means for producing a condition signal which is in a first signal state when the controlled vehicle is in a steady state turning motion and in a second signal state when the controlled vehicle is in transient state turning motion. Motion estimating means determines estimated values of the first, second and third variables corresponding to the signals indicative of the actual values of the steering wheel angle and vehicle speed by solving at least a first mathematical vehicle model determined by equations of vehicle motion and values of a group of vehicle characterizing parameters.

• Assignee: Nissan Motor Co., Ltd.
• Patent Number(s): US 4679808
• OSTI ID: 6123998
• Resource Relation: Patent File Date: Filed date 7 Mar 1986
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
VEHICLES
COMPUTERIZED CONTROL SYSTEMS
DATA PROCESSING
INCIDENCE ANGLE
MATHEMATICAL MODELS
MOTION
NAVIGATIONAL INSTRUMENTS
SIGNALS
CONTROL SYSTEMS
PROCESSING
320203* - Energy Conservation
Consumption
& Utilization- Transportation- Land & Roadway