Abstract Magnetorheological (MR) fluid based dampers have been established as an alternative to classical hydraulic with proportional electromagnetic valves under vibration processes which demand adaptive damping forces. Almost all MR-dampers are spatially 1-degree-of-freedom (DOF) dampers, having only one axis or direction of force generation. In many technical applications there exist movemen...

This paper presents vibration analysis of an autoparametric pendulum-like mechanism subjected to harmonic excitation. To improve dynamics and control motions, a new suspension composed of a semiactive magnetorheological damper and a nonlinear spring is applied. The influence of essential parameters such as the nonlinear damping or stiffness on vibration, near the main parametric resonance regio...

Abstract Recent developments have demonstrated that the brake pedal simulator (BPS) is becoming an indispensable apparatus for break-by-wire systems in future electric vehicles. Its main function to provide driver with a comfortable feel improve braking safety and comfort. This paper presents development control of adjustable BPS, using disk-type magnetorheological (MR) damper as passive reacti...

In light of the insurmountable sedimentation magnetorheological (MR) fluid, it is great significance to ensure performability an MR damper by introducing a sensing method for fluid settling, and key indicator identify health status critical. However, settling monitoring system can nowadays only function in laboratory with transparent non-magnetic tubes, which not qualified in-situ steel-made cy...

Wireless sensor networks have rapidly matured in recent years to offer data acquisition capabilities on par with those of traditional tethered data acquisition systems. Entire structural monitoring systems assembled from wireless sensors have proven to be low-cost, easy to install and accurate. However, the functionality of wireless sensors can be further extended to include actuation capabilit...

Comfort, reliability, functionality performance which provide a longer life cycle requires thourogh understanding and analysis of the vibrations, this is a general rule for most of the static and dynamic when studying the functionality performance of any application. Vibrations is an extremely important issue to consider when designing various systems.The hysteresis in the dampers is very impor...

This paper proposes a new switching adaptive fuzzy controller and applies it to vibration control of vehicle seat suspension equipped with semi-active magnetorheological (MR) damper. The proposed system consists three functioned filters: (1) Filter 1: model interval type 2 compensate disturbances; (2) 2: ‘switching term’ evaluate the magnitude disturbance; (3) 3: group adaptation laws enhance r...

Innovative magnetorheological dampers (MR dampers) for shock and vibration damping, based on magnetorheological fluids (MRFs), are described. Important fields of their application are loading processes, impact dampers in security systems as well as vibration dampers for machines and cars. Various models for describing the MR dampers are discussed. The characteristic feature of the MR dampers is...

A method for parameter identification of the magnetorheological damper (MRD) model with an improved firefly algorithm (IFA) is proposed, and a semi-active seat control system three-degree-of-freedom (3-DOF) established by combining quarter car to investigate ride comfort. The dynamic characteristics MRD were analyzed experimental method. Combined IFA, parameters phenomenon identified, forward M...