A Proposed Methodology for the Control of a Semi-Robotic Convoy
Master's thesis Aug 1989-Jan 1991
ARMY STUDENT DETACHMENT FORT BENJAMIN HARRISON IN
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The purpose of this thesis is to develop a generic control law for unmanned-trail vehicles as they follow a manned lead vehicle. The development of this semi robotic convoy control law begins with a model of an individual vehicle. Two methods are then explored of coupling these into a model of the column. A relationship between these two methods is derived. The model is then expanded to n vehicles. Utilizing a digital simulation, a three-vehicle convoy is controlled in one degree of freedom DOF using pole-placement, state- feedback control theory. The analysis shows this to be an unacceptable method of control due to the steady state error. The 1 DOF model is then controlled with series compensation. Simulations verify that the steady-state error is eliminated. The system is then expanded into a 2 DOF system. Using the same series compensator, a 2 DOF simulation is developed. It is shown that the only additional requirement of the 2 DOF system is that the trail vehicles need to determine their orientation. This is accomplished by first saving the position and velocity profile of the lead vehicle and then developing a search algorithm to find the appropriate information. The simulation verifies that the convoy is controlled within the specifications of the system.
- Surface Transportation and Equipment