Search Results - "Limebeer, David J.N."

Barry Dwolatzky (1952–2023): In memoriam by Limebeer, David J N

“…An obituary for Barry Dwolatzky is presented. Dwolatzky was an active participant in the affairs of Wits University until the very end of his life. After…”
Get full text

Robust control of the Hill's problem with drag by Limebeer, David J. N., Sabatta, Deon

“…Summary There are significant advantages associated with the analysis of satellite trajectory control problems in the Hill's analysis framework. As with the…”
Get full text

Some significant South African contributions to engineering by Limebeer, David J.N., Dwolatzky, Barry

“…To mark the centenary of the University of the Witwatersrand (Wits), we review several major engineering achievements made over the last century by South…”
Get full text

Time-optimal control of rolling bodies by Perantoni, Giacomo, Limebeer, David J.N.

“…The brachistochrone problem is usually solved in classical mechanics courses using the calculus of variations, although it is quintessentially an optimal…”
Get full text

A perspective on South African engineering by David J.N. Limebeer

Get full text

Optimal control for a Formula One car with variable parameters by Perantoni, Giacomo, Limebeer, David J.N.

“…The minimum-lap-time optimal control problem for a Formula One race car is solved using direct transcription and nonlinear programming. Features of this work…”
Get full text

Robust control of the circular restricted three-body problem with drag by Limebeer, David J. N., Sabatta, Deon

“…The robust control of a satellite in a three-dimensional 'halo' obit is studied. In order to introduce a quantifiable robust stability margin, as well as…”
Get full text

Variational Integrators for Dissipative Systems by Limebeer, David J. N., Ober-Blobaum, Sina, Farshi, Farhang Haddad

“…This article uses physical arguments to derive variational integration schemes for dissipative mechanical systems. These integration algorithms find utility in…”
Get full text

Symplectic Integration Schemes for Systems with Nonlinear Dissipation by Limebeer, David J. N., Farshi, Farhang Haddad, Ober-Blobaum, Sina

“…In previous work a variational integration scheme for mechanical systems containing linear dissipation was developed [1]. The key idea is to use a transmission…”
Get full text

Region of attraction analysis for nonlinear vehicle lateral dynamics using sum-of-squares programming by Imani Masouleh, Mehdi, Limebeer, David J. N.

“…In this study we will estimate the region of attraction (RoA) of the lateral dynamics of a nonlinear single-track vehicle model. The tyre forces are…”
Get full text

Optimizing the Aero-Suspension Interactions in a Formula One Car by Masouleh, Mehdi Imani, Limebeer, David J. N.

“…The interactions between the multilink suspension system of an open-wheeled race car and the vehicle's aerodynamic performance are modeled and optimized. The…”
Get full text

Aeroelastic control of long-span suspension bridges with controllable winglets by Bakis, Konstantinos Nikolaos, Massaro, Matteo, Williams, Martin S., Limebeer, David J. N.

“…Summary The structural‐aerodynamic modelling and dynamic stabilization of a three‐dimensional suspension bridge model is considered. Our emphasis is on…”
Get full text

Optimal Motion Cueing for Race Cars by Salisbury, Ingrid G., Limebeer, David J. N.

“…The application of optimal control to simulator motion cueing is examined. Existing motion cueing algorithms are hampered by the fact that they do not consider…”
Get full text

Fuel Minimization for a Vehicle Equipped With a Flywheel and Battery on a Three-Dimensional Track by Masouleh, Mehdi Imani, Limebeer, David J. N.

“…An optimal control based methodology is proposed for minimizing the combustible fuel consumption of a hybrid vehicle equipped with an internal combustion…”
Get full text

Buffet loading, dynamic response and aerodynamic control of a suspension bridge in a turbulent wind by Zhao, Xiaowei, Gouder, Kevin, Graham, J. Michael R., Limebeer, David J.N.

“…This paper describes experiments relating to the buffet response and control of a section of a long-span suspension bridge deck elastically mounted as part of…”
Get full text

An efficient algorithm for discrete-time H ∞ preview control by Hazell, Andrew, Limebeer, David J.N.

“…An efficient numerical solution to the output feedback, discrete-time, H ∞ preview control problem is presented. The first step of the solution comes from…”
Get full text

Experimental Aerodynamic Control of a Long-Span Suspension Bridge Section Using Leading- and Trailing-Edge Control Surfaces by Gouder, Kevin, Xiaowei Zhao, Limebeer, David J. N., Graham, J. Michael R.

“…We experimentally investigate the suppression of flutter in long-span suspension bridges. A rigid sectional model of a long-span suspension bridge is mounted…”
Get full text

Dynamic stability of an aerodynamically efficient motorcycle by Sharma, Amrit, Limebeer, David J. N.

“…Motorcycles exhibit two potentially dangerous oscillatory modes known as 'wobble' and 'weave'. The former is reminiscent of supermarket castor shimmy, while…”
Get full text

Motorcycle suspension design using matrix inequalities and passivity constraints by Sharma, Amrit, Limebeer, David J.N.

“…This paper presents a design methodology for the suspension system of a novel aerodynamically efficient motorcycle. Since the machine's layout and the rider's…”
Get full text

Controller reduction for linear parameter-varying systems with a priori bounds by Jaimoukha, Imad M., El-Zobaidi, Haitham, Limebeer, David J.N., Shah, Nilay

“…In this paper we develop a controller reduction procedure for linear parameter-varying (LPV) systems. The method uses synthesis Riccati inequalities for the…”
Get full text