Abstract
Usually, driver is notconsidered in the plant of control systems. Therefore it's not sure if those systems are stable under the driver control. In order to make heavy-duty vehicle stable under driver control, the plant are defined as a vehicle only and a vehicle with driver, and then controlled by LQG or H_∞ controller. Comparing these results, it is confirmed that H_∞ control system is useful to improve stability of Heavy-Duty Vehicles and quite effective on the robustness for design parameters changes.
