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Showing 1 to 10 of 10 for “"Air spring"”.
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A pneumatic semi-active control methodology for vibration control of air spring based suspension systems
… a pneumatic suspension system containing an air spring, air flow valve, and an accumulator, where the spring and damping functions are combined into one package. The spring and accumulator provide the spring characteristics, and the computer controlled adjustable valve provides the damping …
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Combined Shock and Vibration Isolation Through the Self-Powered, Semi-Active Control of a Magnetorheological Damper in Parallel with an Air Spring
… system package is explored through the use of an air spring in parallel with a controlled magnetorheological fluid damper. The benefits of combining shock and vibration isolation into a single package is discussed. Modeling and control issues are investigated and test and simulation results are …
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Use of axiomatic design principles to develop vehicle suspension controls for variable stiffness and ride height
… FRs, three DPs are chosen - the volume of an air spring for stiffness, the volume of fluid in a fluid chamber for ride height, and orifice control for damping. This thesis investigates two DPs in depth, the air spring and fluid chamber. The nonlinearity of the air spring is studied and its …
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Semi-Active Control of Air-Suspended Tuned Mass Dampers
… this dissertation, semi-active control of air-suspended tuned mass dampers with pendulum configuration was explored. A novel semi-active Air Sprung PTMD was designed, built, and evaluated, analytically and experimentally. The dynamics and control of such PTMD were evaluated, and its …
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Mechanical Integration of a Versatile Air Suspension Into a Powered Wheelchair
<p>Mechanical Integration of a Versatile Air Suspension into a Powered Wheelchair</p> <p>Joel Steinkraus</p> <p>It is undeniable that the vibration environment created by prolonged exposure to wheelchair use can cause discomfort for the rider and put him/her at risk of developing more severe …
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An Advanced Controller for a Semi-active Wheelchair Suspension
… 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 suspensions …
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COMPLIANT END-EFFECTOR COUPLING FOR ROBOTIC ASSEMBLY
… during constrained motion. It features an air bearing, a variable stiffness air spring and a centre-locking mechanism. The end-effector assembly being centrally unlocked floats within the designed compliance limits assisted by the air bearing. These frictionless and free conditions …
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Energy changes on deformation of a pneumatic tyre
… changes in the pressure and volume of the air contained in it. A satisfactory results were obtained from this arrangement. From the measurements of the changes in volume and pressure of the air in the tyre, relationship was derived whereby the volume of the tyre at a particular inflation …
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Flow Characterization and Redesign of Load-Leveling Valves for Improving Transient Dynamics of Heavy Truck Air Suspensions
… load-leveling valves that are commonly used for air suspension systems of commercial trucks. The first valve features a simple disk/slot design and is relatively compact for installation. The second type is larger and has a sophisticated, chambered design, which allows for considerably quicker …
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Tools and Techniques for Flow Characterization in the Development of Load Leveling Valves for Heavy Truck Application
… leveling valve is a critical component of an air suspension system since it manages air spring pressure, a key function that directly impacts vehicle dynamic performance in addition to maintaining a static ride height. Efficiency of operation of a load leveling valve is established by its flow …