Results 1 to 10 of about 19,996 (168)

Enhancing the Shock Response Performance of Micromachined Silicon Resonant Accelerometers by Electrostatic Active Damping Control [PDF]

open access: yesMicromachines, 2021
This paper presents a micromachined silicon resonant accelerometer based on electrostatic active damping control, which can improve the shock response performance of the accelerometer.
Libin Huang   +5 more
doaj   +2 more sources

A Joint Active Damping Strategy Based on LCL-Type Grid-Connected Inverters for Grid Current Feedback and PCC Voltage Unit Feedforward [PDF]

open access: yesSensors
The negative high-pass filter feedback of the grid current (NFGCF) can offer active damping for the LCL-type grid-connected inverter. Due to the control delay in digital control systems, this damping can cause the system to exhibit non-minimum phase ...
Shanwen Ke, Bo Liang
doaj   +2 more sources

Current-Harmonic-Based Active Damping Strategy

open access: yesZhongguo dianli, 2023
The voltage-harmonic-based active damping control (VHBAD) can improve the adaptability of the converter to the weak grid, but it will weaken the suppression ability of background harmonic voltage disturbance and affect the quality of grid-connected ...
Jia XU, Shude YANG, Xinwen ZHANG
doaj   +1 more source

Cancer Development and Damped Electromagnetic Activity [PDF]

open access: yesApplied Sciences, 2020
Cancer can be initiated in a cell or a fibroblast by short-circuiting of the cellular electromagnetic field by various fibers, parasitic energy consumption, virus infections, and mitochondrial defects, leading to a damped cellular electromagnetic field. Except short-circuiting (e.g., by asbestos fibers), the central process is mitochondrial dysfunction
Pokorný, J. (Jiří)   +4 more
openaire   +3 more sources

Virtual Energy Management for Physical Energy Savings in a Legged Robot Hopping on Granular Media

open access: yesFrontiers in Robotics and AI, 2021
We discuss an active damping controller to reduce the energetic cost of a single step or jump of dynamic locomotion without changing the morphology of the robot. The active damping controller adds virtual damping to a virtual leg spring created by direct-
Sonia F. Roberts    +1 more
doaj   +1 more source

Variable damping control strategy of a semi-active suspension based on the actuator motion state

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2020
A semi-active suspension variable damping control strategy for heavy vehicles is proposed in this work. First, a nine-degree-of-freedom model of a semi-active suspension of heavy vehicles and a stochastic road input mathematical model are established ...
Mingde Gong, Hao Chen
doaj   +1 more source

Nonlinear Damping Curve Control of Semi-Active Suspension Based on Improved Particle Swarm Optimization

open access: yesIEEE Access, 2022
This paper studies the semi-active suspension damping control algorithm. The shortcomings of traditional damping control algorithms such as the sky-hook algorithm and the acceleration-driven damper algorithms are analyzed in this article.
Dong Li   +4 more
doaj   +1 more source

Stability of LCL-filtered grid-connected inverters with capacitor current feedback active damping considering controller time delays

open access: yesJournal of Modern Power Systems and Clean Energy, 2017
This paper investigates the stability of LCL-filtered grid-connected inverters with capacitor current feedback (CCF) active damping. The impact of time delays in the digital controller on active damping and its equivalent virtual impedance is analyzed ...
Wei XIA, Jinsong KANG
doaj   +1 more source

Active underwater acoustic damping coating [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1990
An active control coating for the absorption of normally reflected acoustic pressure waves is presented. This polymer matrix coating encapsulates large area polyvinylidene fluoride (PVDF) plates for characterization of the impressed acoustic field and a piezocomposite actuator for the absorption of the reflected acoustic pressure.
Vijay K. Varadan   +3 more
openaire   +1 more source

Active Vibration Control Strategy for Online Application in a Range Extender

open access: yesIEEE Access, 2023
Noise, vibration and harshness are a big issue for hybrid vehicles especially in range extenders. Traditional vibration control and active damping control are generally used for suppressing vibration.
Zhang Jinyu   +3 more
doaj   +1 more source

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