This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Programmable Steering Machine for Vehicle Handling Tests
Annotation ability available
Sector:
Language:
English
Abstract
This paper describes an easily-installed, programmable, battery-powered, “series servo second steering wheel”. The steering machine is designed to execute any 16384-step steering program with force and velocity capabilities significantly greater than those of the human driver. Its EPROM memory contains sixteen separate programs, which can be programmed to duplicate any steering input with fidelity and repeatability. During the execution of a program, the handwheel is mechanically “grounded” to eliminate driver interference with measurement of steering angles and torques. The program also outputs auxiliary signals that can be used to control vehicle throttle and brakes, data recorders, or other devices.
The paper describes the steering machine's design and operation, its measured capabilities, and some of the SAE, ISO, and rollover test protocols for which it is designed.
Recommended Content
Citation
Heitzman, E. and Hietzman, E., "A Programmable Steering Machine for Vehicle Handling Tests," SAE Technical Paper 971057, 1997, https://doi.org/10.4271/971057.Also In
References
- 1988 “Road Vehicles - Lateral Transient Response Test Methods”
- 1988 “Road Vehicles - Transient Open-Loop Response Test With One Period of Sinusoidal Input”
- Norman, K.D. “Objective Evaluation of On-Center Handling Performance” SAE Paper 840069
- Farrer, D.G. “An Objective Measurement Technique for the Quantification of On-Center Handling Quality” SAE Paper 930827
- SAE J266 1996 “Steady-State Directional Control Test Procedures for Passenger Cars and Light Trucks”
- 1988 “Road Vehicles - Lateral Transient Response Test Procedure - Explanatory Note on the Random Steering Input Method”
- 1985 “Road Vehicles - Braking in a Turn - Open Loop Test Procedure”
- 1995 “Road Vehicles - Power-Off Reactions of a Vehicle in a Turn - Open Loop Test Procedure”
- Willumeit, H.P. “The Volkswagen Experimental Safety Vehicle” Fourth International Technical Conference on Experimental Safety Vehicles Kyoto, Japan 1973
- “Reali-Slim Ball and Roller Bearings” Kaydon Bearing Corporation