COMPARISON OF THE BEHAVIOR OF ARTICULATED RECREATIONAL VEHICLES WITH EITHER FIXED OR POSITION CONTROL OF STEERING
The use of a subset of the complete equations of motion to determine the lateral stability of an articulated vehicle is considered. It is shown that, with fixed steering, the path of the vehicle diverges from the nominal path even when each eigenvalue associated with the subset of equations has a negative real part. A linear steering law is introduced which is shown to be effective in controlling the path of the vehicle. Critical speed is significantly affected by the addition of steering control. With control, speed can be higher, lower, or about the same as it is without control. Four different articulated vehicles are treated; the powered vehicle in each case represents a mid-size American car, and the towed vehicles represent utility, boat, travel, and horse trailers. Trailer swing oscillations for the controlled system can be more pronounced, less pronounced, or about the same as those for the system with fixed steering.
- Also published in HS-028 866 (SAE-SP-463), "Recreational Vehicle Dynamics," Warrendale, Pennsylvania, 1980, p 63-72. Presented at SAE Congress and Exposition, Detroit, 25-29 February 1980. Research supported by Engineering Research Institute, Iowa State University.
Warrendale, PA United States 15096
- Johnson, D B
- Huston, J C
- Publication Date: 1980
- Features: References;
- Pagination: 12 p.
- TRT Terms: Critical velocity; Equations; Recreational vehicles; Steering; Towing devices; Trailers
- Uncontrolled Terms: Articulated vehicles; Lateral dynamics
- Old TRIS Terms: Critical speed; Steering control
- Subject Areas: Motor Carriers; Safety and Human Factors;
- Accession Number: 00391862
- Record Type: Publication
- Source Agency: National Highway Traffic Safety Administration
- Report/Paper Numbers: SAE 800158, HS-028 874
- Files: HSL, USDOT
- Created Date: Jan 30 1985 12:00AM