To reduce fuel consumption in the transportation sector research focuses mainly on development of more efficient drive train technologies and alternative designs. Another immidiately applicable way found to road vehicles is change vehicle operation such that system efficiency maximized. The concept Eco-driving refers driver behavior a saving or generally an energy way. In this paper optimized using dynamic programming optimization approach. Given cycle so called `eco-drive cycle' identified...

In the field of urban transport, supercapacitors are submitted to relative high charge and discharge currents therefore significant heat generation occurs. It has been shown that temperature a great influence on aging mechanism and, by consequence, lifetime system. That is why thermal management becomes key issue in study performance stack. this paper, modeling stack presented matrix representation model deduced. Validation carried out using measurement developed test bench. Sensitivity...

Driver modeling is an important subject in transportation systems and intelligent vehicles. These models can replace human driver to quantify enhance the technological solutions by means of simulation. In this paper a driving style model for representing three different styles proposed. Simulation results on two road types are presented fuel consumption estimation obtained with discussed. The could then be used jointly trajectory optimization algorithm designing eco-driving advance...

A Proton Exchange Membrane Fuel Cell (PEMFC) needs an active system to control all the ancillaries and ensure optimal operating conditions, especially in a fuel cell vehicle. For architecture, dead-end anode is cheapest architecture for hydrogen line also one that leads important reversible irreversible degradations if not appropriately managed. To address cost durability issues on vehicles, this study proposes state observer which aims at estimating online nitrogen saturation side order...

Experimental studies have been performed in a wind tunnel order to control the flow separation on rear window of generic vehicle shape (the Ahmed body with scale 0.7 and slope angle 35 degrees). The part geometry has modified by replacing sharp edge between roof smooth curved surfaces. This model is equipped at end strip pulsed jets velocity 30 m.s–1. A 20% drag reduction obtained frequency 500 Hz momentum coefficient Cμ = 2.75 10–3. result confirms interest using reduce aerodynamic...

Hybrid vehicles are found to be one solution reduce fuel consumption in the transportation sector. Eco-driving is a concept that immediately applicable by drivers improve efficiency of their vehicle. In this work potential eco-driving for hybrid drive train discussed. The operation strongly dependent on energy management and therefore battery state-of-charge. Here, velocity trajectory will optimized taking into account vehicle its control strategy modeled simulate operation. Given...

This article proposes a new strategy for pneumatic cylinder control using an innovative synthesis model of the system. A backstepping based law is synthesized to take advantage system two degrees freedom and thorough tuning method closed-loop stiffness damping provided.

This paper develops a backstepping-based algorithm to control the position of an electropneumatic actuator while allowing precise tuning closed-loop stiffness and damping. The proposed strategy offers efficient method choose controller parameters based on physical linear analysis. strict feedback form model, which is required in order apply backstepping methodology, obtained through use transformation system's inputs. multiple input output law as well its are validated experimentally....

In fluid power applications, pipes may have important effects on the system performances. hydraulics, simple pipe models could give a good approximation of pressure drop, but in pneumatics, accurate approximations are more complex because compressibility. Therefore, air mass flow rate still needed for design and control purposes. The main contribution this article is to propose novel analytical formulation pneumatic by taking into account friction factor specifically its dependency Reynolds...

This paper proposes a new estimation scheme for both speed and acceleration signals in order to include them control loop dynamic system. The proposed consists improve higher sliding modes estimator where it can cope with measurement noise better than the classic one. Then, parameters are online updated respect measured signal variations reach good compromise between precision robustness. tuning formulas of gains developed by Lyapunov analysis. Simulation experimental results presented...

This paper presents a combinatorial approach used to solve an optimization problem including component sizing and energy management control applied offroad hybrid electric vehicle with durability constraints. The under consideration is the of power supply system mini-excavator. It composed fuel cell one storage system, i.e includes lithium battery or supercapacitors pack. goal minimize global cost machine during its entire working lifetime. In order fulfill requirements, ageing model...

This paper compares 3 ASR <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> control laws, a PI controller, linearizing feedback and flatness based control. First, the controllers are designed on two state equations vehicle model. Then, experimentally validated an hybrid (VELROUE) with rear electric wheels front axle ICE xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> traction. Finally, nonlinear laws compared to controller that is...

This paper deals with online numerical differentiation of a noisy time signal where new higher order sliding mode differentiators are proposed. The key point these algorithms is to include dynamic on the differentiator parameters. These dynamics tune-up automatically algorithm gains in real-time. Convergence properties schemes derived using Lyapunov approach. Their effectiveness illustrated via simulations and experimental tests, comparative studies performed between classical ones. Such...

In industry, some unexpected or unpredicted effects make difficult to apply certain control techniques which show good performances in laboratory.In this paper, we introduce two new methods, called the model-free and with restricted model [1-3], case of position tracking an electro-hydraulic test rig.For industrial point view, these methods present many advantages as they are closed classic PID do not required intensive modelling work.However, accurate differentiation output has be done...

This paper introduces a novel methodology for minimizing the total cost of ownership (TCO) plug-in Hybrid Electric Vehicles (pHEVs) in context heavy duty application. approach enables best powertrain components sizing to be determined coupled with optimal energy management. A detailed financial model truck is developed take into consideration differences spending from conventional Diesel vehicle. The introduction eight design variables explore both internal combustion engine, electrical...