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This paper analyzed the reliability of the mechanical system of a new conceptual Autonomous Underwater Vehicle (AUV) using FMECA and FTA method. In the FMECA procedure, the failure modes were studied by analyzing their effects and criticalities. Then, the fault tree was built. The research was carried out in both qualitative and quantitative analysis of FTA. Using aforementioned methods, the probability...
The forest fire patrolling and fire-fighting vehicle suspension system is a multi-body system, whose components movement relations are relatively complicated. It is difficult to use design technique and traditional computation method to analyse all kinds of motion characteristic of that suspension system. The front suspension of the forest fire patrolling and fire-fighting vehicle is mainly investigated...
As for military reconnaissance, disaster relief applications such as stairs, stair type of obstacle, the paper propose the use of chain -type self-reconfigurable robots, overally plan the function modules of the robot, finish the design and making of the robot's mechanical system and control system and the corresponding performance testing. The test results show that the design is scientific and reasonable...
This article proposes a mathematical model for the optimization of the mean disassembly time of a mechanical system at the design stage. The model takes into account the maintenance budget allocated by the user on a given horizon. Two independent stages are prior to the implementation of the proposed model. At first, the designer defines the types of possible links to achieve each connection between...
In this paper we are studying the application of techniques to solve constraint satisfaction problems (CSP) for designing mechanical systems. After presenting the CSP method and the several ways to solve it, we introduce an optimization point of view for CSP. Then, we propose a quick overview of CSP application in product engineering. An example in mechanical system optimization is given via the case...
To improve the resolution of the very large telescope interferometer (VLTI) a two-stage mechanical system, a so called differential delay line (DDL), is developed jointly by the EPFL and the Observatory of Geneva. The system is designed to reach nanometer accuracy at high bandwidth over large displacements. The coarse stage features a permanent magnet (PM) stepper motor driving a lead screw connected...
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