Positive joint torque feedback (JTF) can compensate the detrimental effects of load torques on position tracking performance. However, with (real world) nonideal torque sources, simple unity gain positive torque feedback can actually deteriorate the performance, or even result in instability. In this work, a new joint torque feedback approach is proposed which takes into account the actuator’s ...

This paper presents a new approach for estimating and improving voltage stability margin from phase and magnitude profile of bus voltages using sensitivity analysis of Voltage Stability Assessment Neural Network (VSANN). Bus voltage profile contains useful information about system stability margin including the effect of load-generation, line outage and reactive power compensation so, it is ad...

A Fabry-Perot interferometer sensor based on a fiber-tip bubble-structure micro-cavity is proposed, fabricated, and demonstrated for transverse load sensing. The micro-cavity is fabricated by using arc discharge at the end of a multimode fiber which has been processed with chemical etching. A transverse load sensitivity of 3.64 nm/N and a relative low temperature sensitivity of about 2 pm/◦C ar...

This paper presents a novel method of identifying the suitable location for Installation of Unified Power Flow Controller (UPFC), with static point of view, for reducing the severity of a load bus. Bus ranking Index which incorporates the combined effect of line outage contingency and bus load reaching to its voltage stability margin (VSM) is used for deriving the sensitivity factors. These sen...

OBJECTIVE To assess the relationship between viral susceptibility at baseline and virological response in human immunodeficiency virus (HIV)-infected patients treated with multi-drug salvage regimens after multiple previous treatment failures. DESIGN Retrospective analysis of 50 patients from the Frankfurt HIV cohort who had received treatment with a minimum of six drugs, and for whom a sampl...

BACKGROUND Failing hearts display slow relaxation with apparent increased load sensitivity. However, inaccuracies of monoexponential analysis can contribute to these observations, and different qualitative and quantitative results might be obtained by alternative models. We tested whether pressure relaxation of failing hearts consistently deviates from a monoexponential waveform, leading to ove...