Abstract
One of the major deterrents of designing a control system for interactive use with an operator is the lack of asystematic procedure for modeling and incorporating human behavior directly into the design process. In many cases, directoperator feedback is difficult for qualitative design without a costly, fullscale physical prototype. The objective of this articleis to present a modular framework, known as virtual design tools, to design the electrohydraulic steering system of offroadvehicles. The aim was to adapt the electromechanical interface between the operators command signal and the fixed controland dynamic systems. The adaptation was performed with the intent of modifying the system performance to be moreacceptable to the operator without altering the control system or vehicular components. This conceptual design tool wasstudied via a computer simulation for designing an operatoradaptive steering controller for an articulated offroad vehicle.The simulation results indicated that this operatorintheloop design method could successfully incorporate humanbehavior in the controller design process using the virtual design tool.
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