Try this simple experiment one day: wear a couple of earplugs and try to conduct your regular everyday activities, for a couple of hours. How would you describe your feelings in that deafened state? You would probably feel a sense of isolation, from the world and from other people. So, absence of sound induces perceived isolation which may turn into felt oppression in some environments, such as...

This article considers the problem of simultaneous sensor fault detection, isolation, and networked estimation linear full-rank dynamical systems. The proposed is a variant single time-scale protocol based on consensus a-priori estimates measurement innovation. necessary connectivity condition network stabilizing block-diagonal gain matrix derived our previous works. Considering additive faults...

In this paper a model-based procedure exploiting analytical redundancy for the detection and isolation of faults in input–output control sensors of a dynamic system is presented. The diagnosis system is based on state estimators, namely dynamic observers or Kalman filters designed in deterministic and stochastic environment, respectively, and uses residual analysis and statistical tests for fau...

A model-free hybrid fault diagnosis technique is proposed to improve the performance of single and double fault detection and isolation. This is a model-free hybrid method which combines the extended parity space approach (EPSA) with a multi-resolution signal decomposition by using a discrete wavelet transform (DWT). Conventional EPSA can detect and isolate single and double faults. The perform...

The demand for lower cost and form factor and increased re-configurability in wireless systems has driven the investigation of blocker-tolerant softwaredefined radios [1-4]. While promising, a reduction in system form-factor will result in lower isolation among antennas due to the co-existence of multiple ratios or lower isolation within duplexers for FDD systems due to their reduced size and/o...

Substrate noise effects caused by the integration of a DC-DC converter into a 0.13 μm CMOS technology integrated circuit are investigated in this paper. Simulations performed using the Substrate Noise Analyst tool show strong impact of switching and power supply noise on a sensitive analog block. The dependence of substrate noise coupling on physical separation distance, floorplanning and intro...

The response of elastic materials to external changing conditions can proceed through small and discrete releases of stress, rather than a continuous and smooth deformation as described by the classical elasticity theory. In a macroscopic elastic body, the sum of all those small crackling events can create a detectable displacement noise (crackling noise). In this paper we consider the case of ...

A two-stage 1.9GHz monolithic low-noise amplifier (LNA) with a measured noise figure of 2.3dB and an associated gain of 15dB was fabricated in a standard silicon bipolar transistor array. It dissipates 5.2mW from a 3V supply including the bias circuitry. Input return loss and isolation are -9dB and -20dB, respectively.

An important cause for interior noise in vehicles is structure-borne sound from the engine. The vibrations of the source (engine) are transmitted to the receiver structure (the vehicle) causing interior noise in the vehicle. For this reason the engine is supported by rubber isolators for passive isolation in especially the high-frequency region. To make a good judgment of the characteristics of...