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Experimental Examination of Transient Directional Response Tests
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English
Abstract
Four tests for measuring the transient directional response of passenger cars were performed to evaluate their respective merits. The tests examined were (1) ramp-step steer test, (2) reverse steer, (3) lane change (sinu-soidal steer), and (4) pseudo-random steer. The results show that each test is capable of contributing useful information concerning the transient directional response of the vehicle in specific operating scenarios. In addition, the findings indicate that no single test provides an accurate means for assessing the results obtained from the other test procedures. Hence a combination of these test procedures is recommended for evaluating the steering response of passenger cars.
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Authors
Topic
Citation
Nisonger, R. and Fancher, P., "Experimental Examination of Transient Directional Response Tests," SAE Technical Paper 810808, 1981, https://doi.org/10.4271/810808.Also In
References
- “Draft Proposal for an International Standard, Road Vehicle-Transient Response Test Procedure.” (Step Ramp Input) - ISO/TC22/SC9/N185 May 1979
- “Draft Proposal for an International Standard, Road Vehicle-Transient Response Test Procedure.” (Random Input Method) - ISO/TC22/SC9/N194 May 1979
- “Draft Proposal for an International Standard, Road Vehicle-Transient Response Test Procedure.” (Sinusoidal Input) - ISO/TC22/SC9/N191 June 1979
- Fancher P.S. et al “Test Procedures for Studying Vehicle Dynamics in Lane-Change Maneuvers.” SAE Paper No. 760351 February 1976
- Bergman W.E “Correlation Between Open- and Closed-Loop Vehicle Handling Measurements.” SAE Paper No. 800846 June 1980
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- Fancher P.S. et al “Analytical Comparisons of Methods for Assessing the Transient Directional Response of Automobiles.” Extensive Summary, to appear in Vehicle Systems Dynamics, Special Issue September 1981
- “Activities of ISO/TC22/SC9 on Vehicle Dynamics and Road Holding Ability.” TRANS/SCI/WP29/R.203 February 1980
- Fancher P.S. et al “Steering Controllability Characteristics.” Final Report, NHTSA Contract No. DOT-HS-6-014Q9 (Available from NTIS, Springfield, Va., PB-280-688/3) August 1977
- Weir D.H. et al “Evaluation and Correlation of Driver/Vehicle Data.” Technical Report, NHTSA Contract No. DOT-HS-5-01200 April 1977