Experimental studies on realization of fractional inductors and fractional-order bandpass filters

2014 ◽  
Vol 43 (9) ◽  
pp. 1183-1196 ◽  
Author(s):  
Madhab Chandra Tripathy ◽  
Debasmita Mondal ◽  
Karabi Biswas ◽  
Siddhartha Sen
Keyword(s):  
Fractional Order ◽  
Experimental Studies ◽  
Bandpass Filters

scholarly journals Design and Experimental Investigations on NOx Emission Control Using FOCDM (Fractional-Order-Based Coefficient Diagram Method)-PIλDµ Controller

2020 ◽  
Vol 53 (5) ◽  
pp. 695-703
Author(s):  
Maheswari Chennippan ◽  
Priyanka E. Bhaskaran ◽  
Thangavel Subramaniam ◽  
Balasubramaniam Meenakshipriya ◽  
Kasilingam Krishnamurthy ◽  
...  
Keyword(s):  
Fractional Order ◽  
Packed Column ◽  
Experimental Studies ◽  
Pso Algorithm ◽  
Experimental Investigations ◽  
Nox Removal ◽  
Diagram Method ◽  
Coefficient Diagram Method ◽  
Fractional Order Controller ◽  
G Ratio

This paper aims to explore experimental studies on the NOx removal process by using pilot plant packed column experimental hardware. Physical modeling based on chemical absorption equations is used to estimate the diameter concerning the height and L/G ratio. Hydrogen peroxide is used as the additive for achieving high NOx removal efficiency. The absorbent entering into the packed column has been controlled by varying its flow rate through the fractional order controller. The FOCDM-PIλDµ controller tuning parameters such as KP, τI, τD are determined using CDM (Coefficient Diagram Method) PID control strategy and the additional parameters of FOCDM-PIλDµ controller such as λ and µ are determined based on the PSO algorithm. The comparative analysis is performed with classical controllers like ZN-PID along with the CDM-PID controllers.

scholarly journals Experimental Study of the Characteristics of Band-Passed Ultra-High Frequency Filters with Increased Protective Band in the Interest of Ensuring Electromagnetic Compatibility

2021 ◽  
pp. 272-280
Author(s):  
Valery P. Berdyshev ◽  
Andrey V. Zhuravlev ◽  
Nikita V. Kopylov ◽  
Vladimir A. Kopylov ◽  
Vitaly V. Loy
Keyword(s):  
High Frequency ◽  
Electromagnetic Compatibility ◽  
Stop Band ◽  
Experimental Studies ◽  
Bandpass Filters ◽  
Wave Resistance ◽  
Ultrahigh Frequency ◽  
Manufacturing Tolerances ◽  
Technological Limitations ◽  
Attenuation Characteristics

The article presents the structure of the method for the synthesis of microwave bandpass filters (BPF) on non-uniform lines, which makes it possible to select the structure and parameters of the BPF that provide the maximum length of the stop band to meet the requirements of electromagnetic compatibility (EMC) with given restrictions on the attenuation characteristics in the passband and barrier bands. and the established design and technological limitations on the drop in wave resistance and manufacturing tolerances. The results of experimental studies of the characteristics of ultrahigh-frequency bandpass filters with an increased protective band in order to ensure EMC are presented

Cascaded fractional order sliding mode control for trajectory control of a ball and plate system

2016 ◽  
Vol 40 (3) ◽  
pp. 701-711 ◽  
Author(s):  
Prasanta Roy ◽  
Arindam Das ◽  
Binoy Krishna Roy
Keyword(s):  
Fractional Order ◽  
Sliding Mode ◽  
Control Strategies ◽  
Experimental Studies ◽  
Open Loop ◽  
Trajectory Control ◽  
Sliding Mode Controller ◽  
Tracking Accuracy ◽  
Laboratory Setup ◽  
Plate System

This paper presents a comparative study between a sliding mode controller and a fractional order sliding mode controller applied to the problem of trajectory control of a ball in a ball and plate system. The ball and plate system is a well-known benchmark to test advanced control strategies because of its multivariable nonlinear coupled dynamics, open loop instability, parameter uncertainty, and under actuation. A cascaded sliding mode controller is initially designed to mitigate the problem. Furthermore, to improve the performance, a cascaded fractional order sliding mode controller is proposed. The proposed control strategies are experimentally validated on a ball and plate laboratory setup (Feedback Instruments Model No. 033-240). Simulation and experimental studies reveal that the fractional order sliding mode controller outperforms the sliding mode controller in terms of tracking accuracy, speed of response, chattering effect, and energy efficiency.

scholarly journals RAPID-TUNING BANDPASS FILTERS ON MAGNETOSTATIC WAVES

2020 ◽  
Vol 259 (4) ◽  
pp. 4-11
Author(s):  
A. A. Davlyatshina ◽  
V. P. Ivanov ◽  
A. P. Zverev ◽  
V. V. Fedorov
Keyword(s):  
Frequency Response ◽  
Experimental Studies ◽  
Bandpass Filters ◽  
Operating Frequency ◽  
Frequency Range ◽  
Amplitude Frequency Response ◽  
Operating Frequency Range ◽  
Magnetostatic Waves

The article presents the results of the development of rapid-tuning bandpass filters on magnetostatic waves, with operating frequency range from 1 GHz to 4 GHz. We also show the results of experimental studies that were performed to measure the amplitude-frequency response of the filters at 3 GHz, 10.5 GHz, 19.5 GHz.

3-D reconstruction and analysis of mammalian mitotic spindle structure

1992 ◽  
Vol 50 (1) ◽  
pp. 578-579
Author(s):  
Kent McDonald ◽  
David Mastronarde ◽  
Rubai Ding ◽  
Eileen O'Toole ◽  
J. Richard McIntosh
Keyword(s):  
Cross Sections ◽  
Mitotic Spindle ◽  
Experimental Studies ◽  
Video Camera ◽  
Three Dimensions ◽  
Mitotic Spindles ◽  
Black And White ◽  
Reconstruction Methods ◽  
Spindle Structure ◽  
Tissue Culture Line

Mammalian spindles are generally large and may contain over a thousand microtubules (MTs). For this reason they are difficult to reconstruct in three dimensions and many researchers have chosen to study the smaller and simpler spindles of lower eukaryotes. Nevertheless, the mammalian spindle is used for many experimental studies and it would be useful to know its detailed structure.We have been using serial cross sections and computer reconstruction methods to analyze MT distributions in mitotic spindles of PtK cells, a mammalian tissue culture line. Images from EM negatives are digtized on a light box by a Dage MTI video camera containing a black and white Saticon tube. The signal is digitized by a Parallax 1280 graphics device in a MicroVax III computer. Microtubules are digitized at a magnification such that each is 10-12 pixels in diameter.

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