Results 261 to 270 of about 4,740 (306)

Hysteresis Modeling of Semi-Active Magnetorheological Helicopter Dampers

Journal of Intelligent Material Systems and Structures, 1999
MR dampers in soft-inplane rotors such as hingeless and bearingless rotors have potential benefits including semi-active control of aeromechanical instabilities, such as ground and air resonance. An experimental performance characterization of hybrid elastomeric/MR dampers for the 1/6th scale Comanche wind tunnel model rotor is presented. These dampers
V. MADHAVAN, G.M. KAMATH, N.M. WERELEY
openaire   +1 more source

Assessment of semi-active friction dampers in auxiliary mass dampers’ suspension

Engineering Structures, 2019
Abstract Because of the efficiency of semi-active friction dampers to dissipate mechanical energy, their use have been extensively proposed for a variety of mechanical systems to reduce vibration amplitudes. A considerably simple model for a semi-active friction damper can be obtained with the use of an elastic element coupled to a vibratory system ...
Marcelo Braga dos Santos, Humberto Tronconi Coelho   +1 more
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Electrorheological dampers and semi-active structural control

Proceedings of 1994 33rd IEEE Conference on Decision and Control, 2002
Electrorheological (ER) fluids have a number of properties that make them attractive for use in fluid-filled dampers. Our interest is in the use of such dampers for semi-active structural control. This paper provides an introduction to this subject, with emphasis given to control of large structural systems such as buildings and bridges when excited by
N.H. McClamroch, D.S. Oritz, H.P. Gavin, R.D. Hanson   +3 more
openaire   +2 more sources

Semi-Active Steering Damper Control in Two-Wheeled Vehicles

IEEE Transactions on Control Systems Technology, 2011
This work presents the design of innovative control strategies for a semi-active steering damper aimed at improving two-wheeled vehicles steering stability by controlling the weave and wobble modes. The proposed control strategies arise from a parallelism between steering and vertical dynamics of a motorcycle.
DE FILIPPI, PIERPAOLO, TANELLI, MARA, CORNO, MATTEO, SAVARESI, SERGIO MATTEO, L. Fabbri   +4 more
openaire   +2 more sources

A new concept of semi-active suspension with controllable damper and spring

2009 European Control Conference (ECC), 2009
The problem considered in this paper is the design and analysis of implementable architectures for semi-active suspensions characterized by a regulation of both damping and stiffness coefficients. The first contribution of this paper is the introduction of a suspension architecture that makes possible the emulation of the behavior of an ideal ...
C. Spelta, M. Cutini, S. A. Bertinotti, SAVARESI, SERGIO MATTEO, F. Previdi, C. Bisaglia, BOLZERN, PAOLO GIUSEPPE EMILIO   +6 more
openaire   +2 more sources

Pwm control of semi-active dampers

2022
The positioning and tracking control problems of a Stewart hexapod platform are investigated in the present paper by the use of six optimal semi-active pulse-width modulated brakes. The control in PWM (Pulse Width Modulation) of the damping coefficients of the actuators constitutes a novelty.
S. Mesbahi, S. Milana, A. Culla, G. Pepe, N. Roveri, A. Carcaterra   +5 more
openaire   +1 more source

Fault detection for automotive semi-active dampers

2013 Conference on Control and Fault-Tolerant Systems (SysTol), 2013
Advanced electronic monitoring systems are becoming widely used to assess faults of several automotive systems. In particular, the detection of suspension faults can be exploited to prevent vehicle ride handling problems. Advanced active and semi-active damping systems are also becoming widely used.
Diana Hernandez-Alcantara, Luis Amezquita-Brooks, Carlos Vivas-Lopez, Ruben Morales-Menendez, Ricardo Ramirez-Mendoza   +4 more
openaire   +1 more source

Semi-active Dampers for Multiple Pantograph Operation

2020
Multiple pantograph operation is an unfavourable condition for current collection, since the trailing pantograph is subjected to high vibrations and elevated contact force variations, due to the perturbation induced on the overhead line by the leading pantograph.
Bruni, Stefano, Carnevale, Marco, Facchinetti, Alan   +2 more
openaire   +2 more sources

Semi-active hydropneumatic spring and damper system

Journal of Terramechanics, 1998
This paper is concerned with the development of a semi-active hydropneumatic spring and damper system, comprising of a two state hydropneumatic spring and a two state hydraulic damper. The system was specifically developed to improve the ride comfort and handling of large off-road vehicles. The suspension requirements for good ride comfort and handling
C.L Giliomee, P.S Els
openaire   +1 more source

Control Concepts of Semi-Active Friction Dampers

Volume 1: 22nd Biennial Conference on Mechanical Vibration and Noise, Parts A and B, 2009
Reduction of structural vibrations is of major interest in mechanical engineering for lowering sound emission of vibrating structures, improving accuracy of machines and increasing structure durability. Besides design optimization and passive damping treatments, active structural vibration control can be applied to reduce unwanted vibrations.
Lothar Gaul, Jens Becker
openaire   +1 more source