Buscar
Mostrando ítems 1-10 de 34
Narrowband feedback for narrowband control of resonant and non-resonant vibration
(2016-08-01)
This paper presents a simple feedback methodology that uses second order filters to control narrowband resonant and non-resonant vibration of a structural system. In particular, a single degree-of-freedom system is studied ...
Turning a loudspeaker into an active Helmholtz resonator: Underlying law, principle and design methodology
(2018-10-13)
This paper is concerned with how to turn a moving-coil loudspeaker into an active Helmholtz resonator (AHR): that is, an active noise control loudspeaker used in conjunction with a microphone and a feedback controller to ...
Active vibration control using delayed resonant feedback
(2013-09-01)
Delayed feedback (DF) control is a well-established technique to suppress single frequency vibration of a non-minimum phase system. Modal control is also a well-established technique to control multiple vibration modes of ...
Chaos control of a nonlinear oscillator with shape memory alloy using an optimal linear control: Part II: Nonideal energy source
(Springer, 2009-05-01)
In Part II of this two-part work, we apply an optimal linear control technique to suppress chaotic behavior in a SMA oscillator, driven by a DC motor with limited power supply (Nonideal sources). Nonideal sources of ...
Modeling and Dynamic Analysis of an Electrical Helmholtz Resonator for Active Control of Resonant Noise
(2017-10-01)
This paper describes a theoretical and experimental investigation into an electrical Helmholtz resonator (EHR): that is, an active noise control (ANC) loudspeaker used in conjunction with a microphone and a feedback ...
The dynamic behavior of a parametrically excited time-periodic MEMS taking into account parametric errors
(2015)
Micro-electromechanical systems (MEMS) are micro scale devices that are able to convert electrical energy into mechanical energy or vice versa. In this paper, the mathematical model of an electronic circuit of a resonant ...
Effects of spike-triggered negative feedback on receptive-field properties
(Springer, 2015-04-21)
Sensory neurons are often described in terms of a receptive field, that is, a linear kernel through which stimuli are filtered before they are further processed. If information transmission is assumed to proceed in a ...
Full-State Feedback Equivalent Controller for Active Damping in LCL-Filtered Grid-Connected Inverters Using a Reduced Number of Sensors
(Institute Of Electrical And Electronics Engineers, 2015-10)
This paper presents a method for the active damping of a grid-tie LCL inverter. This method is based solely on the feedback of the injected current into the grid, and is applicable to any linear current controller. It ...
On the controllers' design to stabilize ground resonance helicopter
(2019-12-01)
Ground resonance (GR) in helicopters is a potentially catastrophic instability commonly caused by coalescence of the regressive cyclic blade lag mode with the fuselage motion in certain rotor speed ranges. It can limit the ...
Fault Ride-Through Enhancement of DFIG-Based Wind Generation considering Unbalanced and Distorted Conditions
(Institute of Electrical and Electronics Engineers, 2012-09)
A control strategy is proposed to enhance the operation, under network disturbances, of a wind turbine driven doubly fed induction generator (DFIG). The scheme allows us to overcome low voltages, imbalances, and harmonic ...