EXPERIMENTAL STUDY ON THE EPS-BASED SHOCK ABSORBER FOR ROCK-SHED

2016 ◽  
Author(s):  
Shen-Hsiang Hsu
Keyword(s):  
Experimental Study ◽  
Shock Absorber

Experimental Study on the Dynamic Characteristics of Hydro-Magneto-Electric-Regenerative Shock Absorber

2016 ◽  
Vol 836 ◽  
pp. 9-13
Author(s):  
Harus Laksana Guntur ◽  
Wiwiek Hendrowati
Keyword(s):  
Experimental Study ◽  
Dynamic Characteristics ◽  
Hydraulic System ◽  
Shock Absorber ◽  
Excitation Frequency ◽  
Vehicle Suspension ◽  
Test Rig ◽  
Electric Generator ◽  
Car Suspension ◽  
Regenerative Shock Absorber

Regenerative shock absorber is designed to convert the vibration energy losses from the vehicle suspension into electricity. This paper presents an experimental study on the dynamic characteristics of hydro-magneto-electric-regenerative shock absorber (HMERSA). Study was carried out by developing a prototype of HMERSA and testing its dynamic characteristics. The results were analyzed and discussed. Prototype of the HMERSA consists of hydraulic system and electric generator. The HMERSA was tested using a quarter car suspension test rig with input displacement in various frequency (1.3Hz, 1.5Hz, 1.7Hz) and for HMERSA’s various oil viscousity (ISO VG 10, 32, 46). Sprung mass acceleration and the generated electric power representing the dynamic characteristics of HMERSA were measured. Maximum power 2.5 watt and root mean square acceleration 0.172 m/s2 gained for HMERSA with oil viscousity ISO VG 10 at all excitation frequency.

Theoretical and experimental study on driving force and flow characteristics of damping control valve of shock absorber

2018 ◽  
Vol 9 (5) ◽  
pp. 693-704
Author(s):  
Fangwei Xie ◽  
Dengshuai Wang ◽  
Cuntang Wang
Keyword(s):  
Experimental Study ◽  
Shock Absorber ◽  
Test Bench ◽  
Flow Characteristics ◽  
Control Valve ◽  
Content Type ◽  
Damping Control ◽  
Driving Current ◽  
The Mathematical Model ◽  
The Relationship

Purpose The purpose of this paper is to study the flow characteristics of damping control valve of shock absorber, and obtain the minimum driving current required under different working conditions. Design/methodology/approach Based on the simplified model of the internal structure of damping control valve and the theory of fluid mechanics, the mathematical model of the damping control valve driving current under rated load is established. The test bench was designed to study the relationship between flow characteristics and driving current of the damping control valve. Findings The results show that the minimum driving current of switching and flowrate show a linear relationship and the minimum current required for the 4-1 switching is the largest that means the minimum current as long as meets the 4-1 switching to meet the needs of all levels switching. Originality/value These results of the theoretical and experimental study provide a reliable guide and reference for the design and application of damping control valve.

Experimental study of heating of a polyurethane shock absorber under cyclic loading

2020 ◽  
pp. 22-25
Author(s):  
S.N. Yakovlev
Keyword(s):  
Experimental Study ◽  
Cyclic Loading ◽  
Vibration Amplitude ◽  
Shock Absorber ◽  
Heating Temperature ◽  
Loading Frequency ◽  
Empirical Dependence ◽  
Shock Absorbers ◽  
Compression Deformation ◽  
Relative Compression

Based on the results of the experiments, an empirical dependence was obtained to determine the heating temperature of polyurethane shock absorbers of different hardness under cyclic loading, depending on the relative compression deformation, loading frequency and vibration amplitude. Keywords: polyurethane, shock absorber, heating temperature, empirical dependence. [email protected]

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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