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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 41 for “"Lateral Stability"”.
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Lateral Stability of Non-Prismatic Continuous Beams
Made available in DSpace on 2014-12-05T17:37:29Z (GMT). No. of bitstreams: 1 6202986.pdf: 2774656 bytes, checksum: 19dbf36323b31d0cc58c61325dde688a (MD5) Previous issue date: 1962
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Dynamic Modeling and Lateral Stability Analysis of Long Combination Vehicles
… comprehensive modeling evaluation of the dynamic stability of Long Combination Vehicles (LCVs) that are commonly operated on U.S. highways, using multibody dynamic simulations in MATLAB/Simulink®. The dynamic equations for a tractor with two trailers connected by an A-frame converter dolly …
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Active suspension co-design for lateral stability of rail vehicles
… suspension systems, but maintaining dynamic stability at higher speeds demands enhancements to existing rail vehicle suspensions. One strategy to improve dynamic performance is to incorporate active or semi-active elements, such as force actuators or variable dampers, within the suspension …
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Lateral stability analysis and MPC tracking control for articulated heavy vehicles
… during curved-path negotiations and low lateral stability under high-speed evasive maneuvers, which may lead to unstable motion modes, e.g., trailer-sway and jackknifing, causing severe accidents. However, vehicle parameters that can improve the static stability may degrade the dynamic …
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Enhancement of lateral stability of car-trailer systems using model-reference adaptive control
… in curved-path negotiations and display low lateral stability under high-speed evasive maneuvers. Therefore, the objective of this thesis is to design a Lyapunov-Stability-based Model Reference Adaptive Controller (MRAC) for an active trailer steering system to enhance the lateral stability …
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An investigation of the dynamic lateral stability and control of a parawing vehicle
… mass and aerodynamic factors affecting dynamic lateral stability and control. These unusual characteristics are due in large part to the fact that the center of gravity of parawing vehicles is located far below the parawing, whereas conventional aircraft usually have the vertical …
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Enhancement of lateral stability for a multi-wheeled combat vehicle using various control strategies
… for multi-wheeled combat vehicle to enhance its lateral stability at limit handling. The proposed control strategies are Active All- Wheel Steering (AWS), Torque Vectoring (TV) and Differential Braking (DB). At high-speed cornering maneuvers, the vehicle experiences higher load transfer which can …
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Fractional Order State Feedback Control for Improved Lateral Stability of Semi-Autonomous Commercial Heavy Vehicles
… large commercial heavy vehicles, the lateral stability control of articulated vehicles have caught the attention of researchers recently. Active vehicle front steering (AFS) can enhance the handling performance and stability of articulated vehicles for an emergency highway maneuver …
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High-speed lateral stability analysis of articulated heavy vehicles using driver-in-the-loop real time simulation
High-speed testing procedures for evaluating the lateral stability of multi-trailer articulated heavy vehicles (MTAHV) include the use of both an open-loop and a closed-loop maneuvers as specified in ISO-14791. The standard testing procedures are used to determine the Rearward Amplification (RA), …
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Design synthesis of car-trailer systems with active trailer differential braking strategies.
… been proposed and developed for improving the lateral stability of car trailer (CT) systems. Is a linear-model-based controller applicable to active safety systems for CT systems under emergency operating conditions, such as an evasive maneuver at high lateral accelerations? In order to address …
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Design optimization of active trailer differential braking systems for car-trailer combinations
… braking (ATDB) systems to improve the lateral stability of car-trailer (CT) combinations. CT combinations exhibit unique unstable motion modes, including jack-knifing, trailer sway, and roll-over. To address this CT stability problem, two ATDB controllers are proposed, which are …
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Design and validation of active trailer steering systems for articulated heavy vehicles using driver-hardware-in-the-loop real-time simulation
… the low-speed maneuverability and high-speed lateral stability of Double Trailer Articulated Heavy Vehicles (DTAHVs), an Active Trailer Steering (ATS) system has been designed. To date, investigations on ATS systems are mainly focused on numerical simulations. To advance this research towards …
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A wireless communication based active safety system for articulated heavy vehicles
… and ease of maintenance. For AHV's lateral stability control using wireless communication based ATS, addressing the problem of data delay and loss is the main challenge of this study. Innovative solutions have been proposed to tackle the challenges and numerical simulations have been …
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Estudo teórico da estabilidade lateral de hastes submetidas a uma protensão externa
The lateral stability of beams submitted to an external "protension" is investigated by applying the "Dynamic Criteria of Stability", via the Rayleigh-Ritz Method. An analysis of bifurcation taking into account the non-linear terms, for one of the considered cases is made, as well as a discussion …
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Autonomous driving control strategies for multi-trailer articulated heavy vehicles with active safety system
… driving control of MTAHVs include: 1) a lateral preview driver model for MTAHVs was developed using the optimal preview control method; 2) a longitudinal motion-planning and control strategy using fuzzy sets was also devised; 3) an integrated control system was designed for coordinating …
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Design synthesis of articulated heavy vehicles with active trailer steering systems
… have poor maneuverability at low speeds, and low lateral stability at high speeds. Various passive trailer steering and ATS systems have been developed for improving the low-speed maneuverability. However, they often have detrimental effects on the high-speed stability. To date, no systematic …
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Design and analysis of active aerodynamic control systems for increasing the safety of high-speed road vehicles
The lateral stability and the safety of road vehicles is dependent on the vehicle design and operating conditions. Under operating conditions such as slippery roads, high lateral acceleration and tight cornering, the forces and torques due to the interactions between the tire and road may be …
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Nonlinear Investigation of the Use of Controllable Primary Suspensions to Improve Hunting in Railway Vehicles
Hunting is a very common instability exhibited by rail vehicles operating at high speeds. The hunting phenomenon is a self excited lateral oscillation that is produced by the forward speed of the vehicle and the wheel-rail interactive forces that result from the conicity of the wheel-rail contours …
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