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Showing 1 to 17 of 17 for “"semi-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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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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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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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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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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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 …
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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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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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Analysis and Development of Control Methodologies for Semi-active Suspensions
Semi-active suspensions have drawn particular attention due to their superior performance over the other types of suspensions. One of their advantages is that their damping coefficient can be controlled without the need for any external source of power. In this study, a handful of control …
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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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Nonlinear Investigation of the Use of Controllable Primary Suspensions to Improve Hunting in Railway Vehicles
… speed of the vehicle and the wheel-rail interactive forces that result from the conicity of the wheel-rail contours and the friction-creep characteristics of the wheel-rail contact geometry. Hunting can lead to severe ride discomfort and eventual physical damage to wheels and rails. A …
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Semi-active damping of heavy vehicles.
This thesis is concerned with the use of semi-active suspensions in heavy vehicles to improve ride and reduce road damage. An introduction into the subject is given in chapter 1 and a review of the relevant literature is presented at the beginning of each main chapter. The development and modelling …
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Suspension Controls and Parameter Estimation Using Accelerometer Based Intelligent Tires
… and developing control algorithms for automotive suspensions and vehicle stability. A parametric model of an automotive monotube damper is developed and several control algorithms for semi-active suspensions have been developed. An extensive comparison of different control algorithms has been …
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Analysis of Lossless-Adjustable One-Ports: Experimental Testing, Modelling and Optimal Control
… control law for a quarter-car where semi-active damper is used to provide the control action and also where both components: semi-active damper and varspring, are used simultaneously. Different simulation profiles are evaluated that represent common operating conditions in the real …
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Design, Modeling and Control of Vibration Systems with Electromagnetic Energy Harvesters and their Application to Vehicle Suspensions
… damper as well as an energy harvester. The semi-active control of a linear electromagnetic energy harvester, for improvement of suspension performance, has been experimentally implemented in a scaled-down quarter-car suspension system. While improving performance, power produced by the …
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An Advanced Controller for a Semi-active Wheelchair Suspension
<p>An Advanced Controller for a Semi-Active Wheelchair Suspension was designed, built and tested. The suspension consisted of a Goodyear 1S3-011 air spring, IQ Valves high speed proportional solenoid valve, and a custom made accumulator. Several controller designs specific to semi-active …