Generally, there exist voltage differences between the voltage commands and the output voltages of the three-phase pulse-width modulated (PWM) voltage-source inverter (VSI), which are caused by the intended dead-time to prevent the armshort of a leg and the nonlinearities of switching devices. These voltage differences (or voltage distortion) affect the current distortion, torque pulsations, an...

The state estimation of a quantized system (Q.S.) is a challenging problem for designing feedback control and model-based fault diagnosis algorithms. The core of a Q.S. is a continuous variable system whose inputs and outputs are represented by their corresponding quantized values. This paper concerns with state estimation of a Q.S. by a qualitative observer. The presented observer in this pape...

We present observations of 86 meteor radio afterglows (MRAs) using the new broadband imager at Long Wavelength Array Sevilleta (LWA-SV) station. The MRAs were detected all-sky images with a bandwidth up to 20 MHz. fit spectra both power law and log-normal function. When law, varied from flat steep derived spectral index distribution peaked -1.73. function, exhibits turnovers frequencies between...

This paper fully discusses how to design an observer based decentralized fuzzy adaptive controller for a class of large scale multivariable non-canonical nonlinear systems with unknown functions of subsystems’ states. On-line tuning mechanisms to adjust both the parameters of the direct adaptive controller and observer that guarantee the ultimately boundedness of both the tracking error and tha...

RESUMO O organismo materno sofre alterações fisiológicas e biomecânicas durante a gestação, dentre elas o afastamento dos músculos retos do abdome (MRAs). Os objetivos deste estudo transversal foram: comparar distância entre os MRAs primíparas treinadas sedentárias que realizaram parto vaginal cesárea; correlacionar com variáveis materno-infantis; essas sem diástase MRAs. Foram avaliadas 56 mul...

A growth in cultural ideologies concerned with men and masculinities in contemporary American society has recently emerged. Men’s rights activist (MRA) groups embody a movement emphasizing the crisis of masculinity. Despite men’s privileged societal status, MRAs seek to establish resources for men to utilize in elevating their perceived subordinated position in society in relation to women and ...

Mineralocorticoid receptor antagonists (MRAs) and sodium glucose co-transporter 2 inhibitors favorably influence the clinical course of patients with heart failure reduced ejection fraction. This study sought to mutual empagliflozin MRAs in EMPEROR-Reduced (Empagliflozin Outcome Trial Patients With Chronic Heart Failure Reduced Ejection Fraction). Secondary analysis that compared effects versus...

this paper presents a new control scheme for a class of nonlinear systems. in the proposed method, an adaptive neural network observer with rise feedback controller are applied to realize sensorless control scheme. this observer is tuned online and no exact information of nonlinear term of plant is required. so, this characteristic can compensate mismodeling phenomena. also, a new controller ca...