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 20 of 37 for “"active suspension"”.
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Preview based Semi-Active Suspension Control
While semi-active suspensions help improve the ride comfort and road holding capacity of the vehicle, they tend to be reactive in nature and thus leave a lot of room for improvement. Incorporating road preview data allows these suspensions to become more proactive rather than reactive and helps …
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Control and simulation of an active suspension system
… work has been carried out in the area of active suspensions for automotive application. A PC based digital control system and interfaces to an existing trailer with an active zero rate suspension system, sensors and electronics has been developed. The required control software has been …
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A Structured Approach to Defining Active Suspension Requirements
Active suspension technologies are well known for improving ride comfort and handling of ground vehicles relative to passive suspensions. They are ideally suited for mitigating single-event road obstacles. The work presented in this thesis aims to develop a structured approach for finding the peak …
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Design of an active suspension system for an automobile,
Thesis: M.S., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 1973
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Dynamic simulation of semi-active suspension systems for durability analysis
The benefits of vehicles with semi-active suspension systems have been widely accepted, mainly for improvement in ride and handling, over the passive system. However, the durability of the suspension components resulting from this implementation received very little attention. Therefore, this …
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Active suspension co-design for lateral stability of rail vehicles
… Traditionally railways have utilized passive 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 …
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Development of a Semi Active Suspension System for Lightweight Automobiles
Vehicle suspension systems play an integral role in influencing the overall performance of a vehicle. The suspension system of a vehicle performs multiple tasks, such as maintaining contact between the tires and the road and isolating the frame of the vehicle from road-induced vibration and shocks. …
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Active Suspension Design Requirements for Compliant Boundary Condition Road Disturbances
The aim of suspension systems in vehicles is to provide the best balance between ride and handling depending on the operating conditions of a vehicle. Active suspensions are far more effective over a variety of different road conditions compared to passive suspension systems. This is because of …
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Neural network identification of quarter-car passive and active suspension systems
… research effort has been done on the design of active suspension systems based on a quarter-car model with both full-state feedback and incomplete state feedback controllers to optimize the passenger ride comfort, road handling and car controlling. Linear stochastic optimal control will be …
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An analytical investigation of passive and active suspension systems for articulated freight vehicles
… of driver- and road-friendly vehicles. Different active and passive suspension systems are thus analyzed to enhance the performance characteristics of articulated freight vehicles. The investigation is carried out in five phases: (i) development of a representative dynamic model of the vehicle; …
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Development of a Visual Demonstration Platform for Parallel Evaluation of Active Suspension Systems
Vehicle suspensions have been a major focus of research and design since the introduction of the automobile. The two major characteristics that define the performance of a specific suspension design are the vehicle ride and handling. A simplified view of chassis development is that a desirable …
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Modeling, Development and Experimental Validation of different Control Strategies for a Double-Damper Semi-Active Suspension System
Vehicle Suspension is an important sub-system in an automobile as it is directly related to the subjective qualities of ride comfort that the passengers perceive. A vehicle suspension works by insulating the driver and the passengers from the irregularities of the road. Moreover, a suspension is …
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A model analysis of an active vehicle suspension system using hydraullic control
… and evaluate the performance of a laboratory active suspension. Much has been published on active suspension theory but relatively few have actually been built and reported on. This study examines the performance of two types of active suspension controllers and the performance of a hydraulic …
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Improvement of semi-active control suspensions based on gain-scheduling control
… of a non-linear control strategy for a semi-active suspension controller using a gain-scheduling structure controller. The aim of the study is to overcome the constraints of conventional control strategies and improve semi-active suspension to achieve performance close to that of full active …
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Real-Time Anticipatory Suspension Control for Single Event Disturbances
… on the market are still equipped with a passive suspension system, while some luxury brands may already use an adaptive suspension. Active suspension systems on the other hand are rarely found, however, they offer great opportunities to close the gap of the well-known trade-off between ride …
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Evaluating Whole Body Vibration and Standing Balance Among Truck Drivers
… levels: 1) sitting in an electromechanically active-suspension vibration-reducing seat, and 2) sitting in a standard passive, air-suspension truck seat. Based on field measurements, WBV exposures were expected to be approximately 50% lower in the seat with the electromechanically …
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Ride Simulation of Passive, Active, and Semi-Active Seat Suspensions for Off-Road Vehicles
Mathematical models were developed for passive, active, and semi-active suspension systems for off-road vehicle seat suspensions. Each suspension model was combined with a three degree of freedom model of the vehicle operator to formulate models of the ride systems of off-road vehicles. Ride …
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Energy Harvesting Hydraulically Interconnected Shock Absorber: Modeling, Simulation and Prototype Validation
The conventional car suspension system uses isolated shock absorbers that are only capable of dissipating energy in the form of heat. Each shock absorber in a hydraulic interconnected suspension is connected by hydraulic circuits, allowing the electrified hydraulic fluid to be used to counteract …
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Asymmetric Energy Harvesting and Hydraulically Interconnected Suspension: Modeling and Validations
Traditional vehicle suspension system is equipped with isolated shock absorbers that can only dissipate energy by themselves. Hydraulic interconnected suspension uses hydraulic circuits to connect each shock absorber, so that the energized hydraulic fluid can be utilized to counter unwanted body …
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Enhancement of lateral stability for a multi-wheeled combat vehicle using various control strategies
This thesis investigates various active chassis 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 …
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