Automatic vehicle driving system and method of driving the same

Details Automatic vehicle driving system and method of driving the same Automatic vehicle driving system and method of driving the same

1991-01-29

1993-03-09

Lall, Parshotam S.

Boots, shoes, and leggings

36442601, 73117, G06F 1520

Patent

active

051930625

ABSTRACT:
In an automatic test vehicle driving system on a chassis dynamometer, a table between accelerator actuator stroke and engine output torque and a table between engine friction loss power and engine speed are formed and stored by teaching operation before vehicle travel test. During travel test, command accelerator actuator strokes are determined with reference to the formed stroke-torque table when the test vehicle is accelerated or kept at a constant speed to reduce setting time for each test vehicle. Further, it is determined whether vehicle speed can be decelerated by only engine brake or by depression of brake pedal with reference to the formed friction loss power-engine speed table to prevent unnecessary braking operation. Since engine output torque can be determined in open-loop control, complicated control gain adjustment setting work can be eliminated.

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