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Automobile brake by wire system has become a promising vehicle braking control scheme and enhancing braking performance over conventional hydraulic system. But these brakes require high power to generate actuation force and also problem of clogging is faced. This paper presents a novel methodology to improve braking quality and to tackle the problem of brake by wire system by introducing hybrid braking...
Ride comfort is one of the main indexes of a comfortable vehicle, and engine mounts play an undeniable role in it. In this paper, a simplified model of an engine system is expressed to evaluate the performance of a semi-active MagnetoRheological (MR) engine mount and compare it with that of the passive Hydraulic Engine Mount (HEM) on which engine is originally mounted, to investigate if it is advantageous...
This paper presents the improved design of a Coanda Effect Test Bench (CoETB) and its experimental data. The CoETB is primarily setup to investigate the authors' hypothesis that a steerable Coanda effect can be used for flight directional control. The design is currently based on the Unmanned Aerial Vehicle (U.A.V) manufactured by GFS Projects Limited or known as the GFS-UAV. The CoETB experiment...
A highly maneuverable, compact vehicle for underwater precision inspection of complex structures is presented. The vehicle will have no appendages such as rudders, screws, and other external thrusters, which might get tangled and interfere with the underwater structure in a cluttered environment. A multi-axis, integrated thruster mechanism using Coanda-effect high-speed valves for switching the direction...
Among the new technologies in marine robotics is the trend toward smaller, cheaper and highly maneuverable vehicles, which could operate in swarms and also in very narrow and cluttered environments. A key challenge for vehicles with characteristic length of tens of centimeters scale is propulsion, where the designer faces high complexity in small vehicular space, as well as fouling concerns. Toward...
Thinking of structure parameters, such as area of theittling orifice, fit clearance between piston spherical surface and cylinder wall, the model of hydraulic buffer used for track vehicle was built, dynamic characteristic and influencing factor of hydraulic buffer was simulated. A hydraulic buffer used in a type of track vehicle was test in hydraulic buffer performance rig. Results show hydraulic...
The erecting process of a hydraulic erecting system was studied based on electro-hydraulic similarity principle, with the numerical simulation of the rapid-erection system of a multi-function missile launching vehicle as an example. The system modeling was based on ??knot point balance method??. The pressure-flow rate characteristics of hydraulic elements and cubage cavity were analyzed based on mathematic...
In the robotic domain, it is common to deduce and use models that allow translating mathematically the element behavior. In some cases, these would serve as base to determine and develop a controller, for example. Beyond this, the simulation and experiments are reasons that leave to the development of models, becoming evaluation tools of the system behavior, especially when there are constraints of...
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