Results 11 to 20 of about 146,061 (303)
Fractal and Fractional, 2023 In the paper, a backstepping control strategy based on a fractional-order finite-time command filter and a fractional-order finite-time disturbance observer is proposed for the trajectory tracking control of an unmanned surface vehicle.
Runan Ma +4 more
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Research on the State of Charge of Lithium-Ion Battery Based on the Fractional Order Model
Energies, 2021 Accurate estimation of the state of charge (SOC) of lithium batteries is paramount to ensuring consistent battery pack operation. To improve SOC estimation accuracy and suppress colored noise in the system, a fractional order model based on an unscented ...
Lin Su +4 more
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Power-Efficient Electronically Tunable Fractional-Order Filter
Fractal and Fractional, 2023 This article describes a low-voltage, low-power fractional-order low-pass filter (FO-LPF) of order 1 + α, which is implemented using a voltage differencing differential difference amplifier (VDDDA).
Sadaf Tasneem +3 more
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Optimized fractional low and highpass filters of (1 + α) order on FPAA [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2020 This work proposes an optimum design and implementation of fractional-order Butterworth filter of order (1 + α), with the help of analog reconfigurable field-programmable analog array (FPAA).
N. Singh +3 more
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Fractal and Fractional, 2022 In this paper, the adaptive finite-time control problem for fractional-order systems with uncertainties and unknown dead-zone fault was studied by combining a fractional-order command filter, radial basis function neural network, and Nussbaum gain ...
Xiongfeng Deng, Lisheng Wei
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Approximated Fractional Order Chebyshev Lowpass Filters [PDF]
Mathematical Problems in Engineering, 2015 We propose the use of nonlinear least squares optimization to approximate the passband ripple characteristics of traditional Chebyshev lowpass filters with fractional order steps in the stopband. MATLAB simulations of(1+α),(2+α), and(3+α)order lowpass filters with fractional steps fromα = 0.1 toα = 0.9 are given as examples. SPICE simulations of 1.2, 1.
Todd Freeborn +2 more
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Active realization of fractional order Butterworth lowpass filter using DVCC
Journal of King Saud University: Engineering Sciences, 2020 This paper presents an active realization of fraction order Butterworth lowpass filter using a differential voltage current conveyor (DVCC) and two fractance devices (FDs). Initially, the DVCC based fractional order system transfer function is developed.
Shalabh Kumar Mishra +2 more
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Fractal and Fractional, 2021 The covariance matrix of measurement noise is fixed in the Kalman filter algorithm. However, in the process of battery operation, the measurement noise is affected by different charging and discharging conditions and the external environment ...
Liping Chen +4 more
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Grid-Connected Inverter Based on a Resonance-Free Fractional-Order LCL Filter
Fractal and Fractional, 2022 The integer-order LCL (IOLCL) filter has excellent high-frequency harmonic attenuation capability but suffers from resonance, which causes system instability in grid-connected inverter applications. This paper studied a class of resonance-free fractional-
Xiaogang Wang, Junhui Cai
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Journal of Advanced Research, 2020 The paper discusses a new design of a current–mode reconnection–less reconfigurable fractional–order (FO) low–pass filter of various orders. The filtering structure is based on a 4th–order leap–frog topology using operational transconductance amplifiers ...
Lukas Langhammer +4 more
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