Longitudinal Control and Crashworthiness for Small Automated Transit Vehicles.

摘要

The study is concerned with longitudinal control and crashworthiness for small,automated transit vehicles. Control system designs and hardware options for relatively short headway operation at moderate speeds are evaluated. Evaluation is based on performance during normal and emergency operations,sensing and communication requirements,and simplicity of design as a measure of cost and reliability. The study is restricted to the vehicle-follower control concept. Controllers are successfully designed for a variety of data sensing and transmission requirements and no problems are encountered in realizing constant safety factor,constant time headway,and constant spacing operational policies. Fundamental analytical results on collision dynamics and the effectiveness of passenger protective devices,shock absorbers,and interior configurations on occupant protection during fore and aft collisions are derived.