Mode Running by Robotic Driver in Consideration of the Lack of a Driving Force at Changing Gears

Abstract

Vehicle performance tests are conducted to evaluate factors of vehicle performance such as fuel consumption and durability. Robotic drivers are often used in these tests to ensure that performance evaluate is reproducible. When the driver selects the gear ratio in Manual transmission, speed control performance is degraded during changing gear, because a torque transmission between the engine and wheels is cut during this sequence. In this paper, we realized the driving while considering shift changes by the robotic driver. First, we modeled the lack of a driving force. We then derived a target vehicle speed waveform using the lack of a driving force model. Finally, we performed vehicle tests using a robotic driver. We confirmed that the proposed system was effective based on the results of actual vehicle tests.