In this study, the dynamic range and dispersion stability of a shear-type magnetorheological (MR) grease damper were experimentally investigated as important characteristics affecting performance semi-active vibration suppression. Furthermore, was applied to suppression small single-degree-of-freedom model structure subjected seismic excitation. The test results indicated that it has 157 times,...

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...

For realizing the intelligent vehicle suspension design with magneto-rheological (MR) fluids dampers, extensive laboratory measurements are performed to characterize the symmetric and asymmetric hysteresis force properties of a MR-damper, under a wide range of drive current and harmonic excitation conditions (frequency and stroke). The proposed asymmetric damping force generation (ADFG) algorit...

In this paper some saturation properties of silicone oil-based magnetorheological fluids in mechanical engineering were researched and discussed by theoretical analysis and experiments. Firstly, experiment materials and preparation process of silicone oil-based magnetorheological fluids were presented. Secondly, magnetic-field saturation, particles saturation and added nano-particles saturation...

This study evaluates the vibration isolation performance of an adaptive magnetorheological elastomer (MRE)-based dynamic absorber (MRE-DVA) for mitigating high frequency vibrations (100–250 Hz) target devices. A simple and effective MRE-DVA design was presented its experimentally measured. cylindrical shaped MRE pad configured to be operated in shear mode also worked as a semi-actively tunable ...

Semiactive control systems that offer the reliability of passive control systems as well as the versatility and adaptability of active control systems have received significant attention for structural vibration control (Jung et al., 2004). Magnetorheological (MR) fluid dampers have emerged as such a class of semiactive damping devices. By activating the MR fluid contained in the device through...

To analyze the multi-dimensional seismic mitigation performance and torsional vibration characteristic of an L-shaped frame structure with a magnetorheological damper (MRD). Firstly, mechanical property MRD is experimentally studied. Then, calculation models without MRDs are found through theoretical analysis, programs compiled. Finally, time history responses calculated during excitation bi-di...

A dynamic model of the manipulator robotic complex was developed on basis conducted experimental studies. The concept determining characteristics mechanical system is proposed according to results oscillation analysis. algorithm supplemented with modules considering possibility using controlled damping devices. constituent parts represent devices manipulator, in particular connections, rotary a...