Global ETD Search
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 19 of 19 for “"Steering Systems"”.
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Modeling and analysis of power steering systems
Thesis (Mech. E.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Structure-borne sound transmission within electric power steering systems
… case studies concern a beam and an electric powersteering system with paraxial servo unit (EPSapa), respectively. EPSapa systems consist of multiple embedded vibrational components which are defined as“internal sources”. The electric motor, the ball nut assembly and the toothed belt are …
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Development of active trailer steering systems for pickup truck-trailer combinations
… a subject of concern in the design of safety systems. Vehicle-trailer combinations tend to exhibit low lateral stability and poor maneuverability, especially under high-speed maneuvers, which lead to unstable motion modes such as jackknifing, trailer sway and rollover. Active safety systems …
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Design synthesis of articulated heavy vehicles with active trailer steering systems
… heavy vehicles (AHVs) with an active trailer steering (ATS) system is examined and evaluated. Due to their heavy weights, large sizes, and complex configurations, AHVs have poor maneuverability at low speeds, and low lateral stability at high speeds. Various passive trailer steering and ATS …
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Fault tolerant control of active trailer steering systems for multi-trailer articulated heavy vehicles
… faults intelligently. This thesis focuses on FTC systems for Multi-Trailer Articulated Heavy Vehicles (MTAHVs), particularly for Active Trailer Steering (ATS) systems. MTAHVs are vital to the trucking industry, and it is crucial to enhance their safety, reliability and usability. In this research, …
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Design of active trailer steering systems for long combination vehicles using robust control techniques
… Therefore, it is imperative to develop safety systems with a focus on improving stability, and ensuring safety of LCVs. Active safety systems such as Active Trailer Steering (ATS), have been widely explored to overcome these stability challenges. So far, the design of ATS systems have utilised …
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Robust controller design for active trailer steering systems of articulated vehicles using multi-objective optimization
… the robust controller design for active trailer steering (ATS) systems to increase the safety of articulated vehicles. By applying a multi-objective evolutionary algorithm (MOEA) to the design optimization of the robust ATS controller, a series of optimal gain values can be obtained in a single …
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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
… 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 real-world applications, a Driver-Hardware-In-the-Loop (DHIL) real-time simulation platform …
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Aktive Sekundärmaßnahmen zur Vermeidung von fahrzustandsabhängigen Geräuschen in hydraulischen Lenksystemen
In hydraulic power steering systems of motor vehicles, often unintended acoustic phenomena can result from certain driving situations. The acoustic phenomenon known as “rattling” is generated by impacts on the steering cylinder, if the car rides over bumps, kerb stones or similar obstacles. In …
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Robotic Tour Guide Platform
… and other sensor-based mapping and localization systems, path planning and steering systems, and emotive human-robot interaction systems. The platform has been designed to allow for flexibility and extensibility while assuring safety and stability. The ROS open source library has been utilized to …
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Fault tolerant control for an electric power steering system
Electric power steering (EPS) systems are rapidly replacing existing traditional hydraulic power steering systems due to fuel and cost savings. The reliability of a column mounted EPS is improved by adding an alternate control scheme that is tolerant to a torque sensor failure (FTC). To accomplish …
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Design and validation of high speed active trailer steering system for articulated heavy vehicle
… lateral stability of the A-train double, Active steering systems (ATS) have been designed through two methods: robust LQR-LMI method with genetic algorithm (GA) optimization and H∞ method. The designed controllers are validated by numerical simulation and hardware in-loop simulation. The ATS …
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Design and implementation of test-bed for path planning and formation control of cooperative robotic agents
… motorized differential drive kinematics systems. We then discuss the capabilities of our platform with basic behaviors such as: path-to-goal, avoid-obstacle, maintain relative distance, maintain relative angle (formation), and maintain general speed to form a guidance algorithm. …
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Emergency braking using two independent steering actuators while maintaining directional control
"By-wire" systems are currently an area of significant interest in the automotive industry. In particular, there is substantial work being done to investigate the use of steer-by-wire and brake-by- wire systems in automobiles. Since these systems replace traditional mechanical connections with …
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Analysis, Implementation and Considerations for Liquid Crystals as a Reconfigurable Antennas Solution (LiCRAS) for Space
… but without the risks associated with mechanical steering systems. The final solution is believed to be a hybrid approach that performs in between the boundaries set by the two current disparate approaches. Practical reflectarrays have been developed since the 90s as a means to control reflection …
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Brake-Actuated Steering of Heavy Goods Vehicles
… reduced low-speed manoeuvrability. Active rear-steering technologies have been developed to mitigate this, but they rely on heavy and costly electro-hydraulic actuation systems. This dissertation describes the development of a ‘brake-actuated steering’ (BAS) concept to actively steer articulated …
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Structure and Optimisation of Liquid Crystal based Phase Shifter for Millimetre-wave Applications
… speed for phase modulation, their binary beam-steering nature is resolution-limited and thereby degrades the beam-scanning performance. In response to this, continuously-tunable phase shifting can be realised by using tunable dielectric materials such as ferroelectric BST and liquid crystals …
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Aportaciones al análisis de la dinámica de un buque y sus sistemas de gobierno mediante un simulador de navegación
Esta Tesis Doctoral se estructura en siete capítulos, cinco apéndices y un capítulo final de bibliografía, de la siguiente forma: · CAPÍTULO I. INTRODUCCION GENERAL Introducción al buque como sistema y descripción de los subsistemas más importantes de los que está dotado e introducción a la …
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Methods of system identification, parameter estimation and optimisation applied to problems of modelling and control in engineering and physiology
… in the development of integrated dynamic systems, such as “control-configured” aircraft or in complex robotics applications. These models usually involve combinations of linear or nonlinear ordinary differential equations or difference equations, partial differential equations and …