Now a days, Lean manufacturing becomes a key strategy for global competition. In this environment the most important process is the efficient selection of suppliers. In any organization various criteria such as quality, cost, location etc are used for the selection of supplier which plays a vital role in the industry. In the present work multi criteria decision making (MCDM) methods are used su...

This paper designs observers for matrix second-order linear systems on the basis of generalized eigenstructure assignment via unified parametric approach. It is shown that the problem is closely related with a type of so-called generalized matrix second-order Sylvester matrix equations. Through establishing two general parametric solutions to this type of matrix equations, two unified complete ...

The goal of the research presented in this paper was to study a new software paradigm ± adaptive software ± in which the structure of an adaptive program is patterned upon the structure of an adaptive controller. Towards this aim, we implemented a domain-speci®c (object/target recognition) program (A Recon®gurable Architecture for Adapting to Changes in the Requirements (RAACR)) that can adapt ...

We have developed a novel control mechanism that deploys a large number of inexpensive robots as a distributed remote sensing array, called a Distributed Robotic Macrosensor (DRM). A simple virtual spring mesh abstraction is used to provide fully distributed control that is both flexible and fault-tolerant. We describe and evaluate several algorithms for virtual spring mesh–based control and pr...

In this paper, reliability block diagram of a sounding rocket separation system is determined and also, FMEA analysis of its spring mechanism is performed. This system is based on the flexible linear shape charge crosssection system and a spring mechanism to accelerate separation. In this investigation, reliability block diagram of the separation system include mechanical and electrical mechani...

Abstract This paper aims to study the dynamics of single-degree-of-freedom magnetic spring-based oscillator system. The proposed system contains a nonmagnetic shaft, floating permanent magnet (PM), and two fixed magnets (PMs). All PMs are placed in such way that they can repel each other. At first, system's properties restoring force studied. Experimental numerical analyses have been carried ou...

introduction: the purpose of this study was to compare the accuracy of the torque wrenches used in different dental implant systems. methods: we evaluated 42 torque wrenches used in different dental clinics in mashhad, iran, using a digital torque meter (mark 10). high (25, 30 and 35 n·cm) and low (15 n·cm) levels of torque were examined. ten tests were performed on each wrench, and the mean va...

This paper presents the initial investigation of nonlinear control for a magnetic spring. The combination of a magnet pair in repulsion and a magnet pair in attraction create a spring with a quadratic force curve. At its nominal position, it is a marginally stable system that has interesting vibration isolation properties. Non-linear control is shown to be effective in stabilising the system.

This paper introduces an open-source software package SCILAB, an alternative of MATLAB, which can be used for robust control design and analysis of a typical mass-spring-damper (MSD) system. Using the previously published ideas, this popular mechanical system is considered to provide another example of usefulness of SCILAB for advanced control design. Keywords—Robust Control, SCILAB, Mass-Sprin...