Ramprasad Potluri

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A four-wheel steering four-wheel drive (4WS4WD) electric vehicle has an independent steering motor and an independent driving motor for each wheel, for a total of eight motors. The main advantages of this vehicle over conventional four-wheeled vehicles are maneuverability and efficiency. The existing solutions to the problem of path-tracking control of this(More)
A four-wheel steered four-wheel driven electric vehicle (4WS4WD EV) has a steering motor and a driving motor for each wheel, for a total of eight motors. The existing path-tracking control solutions for this EV view its mathematical model as the system of equations ẋ = f(x, u), y = g(x, u), and apply various mathematically sophisticated control and(More)
The commented paper “Model-Independent Adaptive Fault-Tolerant Output Tracking Control of 4WS4WD Road Vehicles” (IEEE Transactions on Intelligent Transportation Systems, vol. 14, no. 1, pp. 169-179, Mar. 2013) has multiple errors in its mathematical model. Because these errors, if left uncorrected, are a potential source of future errors in(More)
Two methods are discussed for determining the set of all b for which the system Ax b (A—constant) is irredundant. For {n = fixed,m = var} and {m − n = fixed,m = var}, the first method is of polynomial complexity and worked significantly faster. The set turns out to be a convex open unbounded polyhedron. © 2005 Elsevier B.V. All rights reserved.
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