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Proceedings of

7th International Conference on Advances in Mechanical and Robotics Engineering AMRE 2018

Date
19-Aug-2018
Location
Kuala Lumpur , Malaysia
Authors
10
ISBN
978-1-63248-159-7

4 Articles Published

1. MULTI OBJECTIVE OPTIMIZATION OF A QUARTER CAR MODEL FITTED WITH AN MR-DAMPER

Authors: BASYOUNY ELSOUHILY , HASSAN ELGAMAL , MOHAMED ABDELNAEEM

Abstract: In this paper, an MR-damper fitted to a non-linear quarter car model to obtain the optimum voltage required to handle the MR-damper during the vehicle passing over a bump. Macpherson strut suspension system is implemented for the study. The optimum voltage was obtained depending on ride comfort which was the vertical vehicle RMS acceleration and displacement. The analysis was done by using a genetic algorithm in MATLAB/SIMULINK software. GA is implemented to minimize both the vertical RMS acceleration and displacement of the sprung mass. The results are compared to the passive suspension system. The RMS acceleration is reduced by 71 % and 11% at velocities of 10 and 70 km/hr respectively while the displacement is reduced by 36.6% and 40% at the same velocities after the transient period. A pareto front was obtained at different vehicle velocities to demonstrate the effect of vehicle velocity on vehicle vertical acceleration and displacement and gives more flexibility to choose optimum

Keywords: Macpherson, genetic algorithm, Multi Objective Optimization, MR-damper, pareto front.

Pages: 7 - 13 | DOI: 10.15224/978-1-63248-159-7-15

2. COATING CHARACTERIZATIONS AND EVALUATION OF CERAMIC-METAL MIXTURE SLURRY BASED THERMAL BARRIER COATING FOR AUTOMOTIVE TURBOCHARGER TURBINE APPLICATION

Authors: ALIAS MOHD NOOR , FADZLUN NADRAH SHARUDDIN , UDAY M. BASHEER

Abstract: Turbocharging the internal combustion engine(ICE) is to increase the power density of the engine or known as the downsizing of the engine. Large amount of heat energy is wasted through the exhaust manifold, coolant, convective and radiate heat transfer. The amount of heat loss generated to the surrounding by operating turbine volute will affect the service life of some automotive components. The current material tungsten used for heavy duty automotive turbine volute casing is heavier and costly if to compare to a new suggested material nickel with thermal barrier ceramic coating as an alternative.Thermal barrier coating is an alternative method for insulating cheaper and lighter engineering components operating in extreme temperature condition, there exist different coating techniques, but high installation cost and high technical skills requirement have restricted their widespread acceptance. The need of simple and cost effective thermal barrier coating has become necessary for the al

Keywords: Ceramic materials, thermal barrier coating, turbocharger turbine, automotive engine

Pages: 14 - 22 | DOI: 10.15224/978-1-63248-159-7-16

3. OBSERVER LINEARIZATION FOR NONLINEAR SYSTEMS USING PIECEWISE MULTI-LINEAR MODEL

Authors: MICHIO SUGENO , TADANARI TANIGUCHI

Abstract: This paper proposes an observer design for piecewise nonlinear systems via observer linearization. The model is a piecewise multi-linear (PML) system, a nonlinear approximation, and fully parametric. Feedback linearization is applied to stabilize PML control system. However, since exact observer linearized conditions are more conservative than exact feedback linearized ones, the exact observer linearization can be applied to only a few nonlinear systems. This paper shows the PML model based linearized observer can be applied to a wider system than the conventional one. We apply the proposed method to TORA (Translational Oscillator with Rotating Actuator) system which is one of the benchmark problem for nonlinear control. Example is shown to confirm the feasibility of our proposals by computer simulation.

Keywords: observer linearization, piecewise multi-linear model, nonlinear control, feedback linearization

Pages: 23 - 28 | DOI: 10.15224/978-1-63248-159-7-17

4. NON-LINEAR CONTROL FOR A GROUP OF OMNI-WHEEL ROBOTS

Authors: ANDREY A. SKLYAROV , GENNADY E. VESELOV

Abstract: According to the working principle of a certain type of high- altitude vehicle, the force analysis of working arm of the high-altitude vehicle was carried out. Based on this,the working conditions of lifting, lowering, rotating, and luffing were simulated to consider the influence of the angle variation of luffing angle  and folding angle  on the stress of the working arm. Using MATLAB to draw the diagrams of the dynamic relationship between the stress and the amplitude luffing angle  and folding angle  , which provides a theoretical basis for the optimal design and life prediction of the working arm of a high-altitude vehicle.

Keywords: group control; omni-wheel robot; non-linear mathematical model; synergetic control theory

Pages: 29 - 32 | DOI: 10.15224/978-1-63248-159-7-18

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