2019
DOI: 10.1177/0142331219888415
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Theoretical modeling and vibration control for pre-twisted composite blade based on LLI controller

Abstract: Theoretical modeling and vibration control for divergent motion of thin-walled pre-twisted wind turbine blade have been investigated based on “linear quadratic Gaussian (LQG) controller using loop transfer recovery (LTR) at plant input” (LLI). The blade section is a single-celled composite structure with symmetric layup configuration of circumferentially uniform stiffness (CUS), exhibiting displacements of vertical/lateral bending coupling. Flutter suppression for divergent instability is investigated, with bl… Show more

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Cited by 4 publications
(3 citation statements)
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“…The ILC algorithm is often used to deal with the large-scale, time-domain responses of nonlinear systems; however, for multivariable systems, the iterative process will be very long. For the control system, which needs a fast response to restrain the flutter, especially for the actual hardware control system such as programmable logic controllers (PLCs) that are currently the controllers of most large wind turbines [15], it has lost practical significance and practical value because of the complexity of the most intelligent control algorithms, so this design in the present study, will further simplify the aeroelastic system.…”
Section: System Simplificationmentioning
confidence: 99%
See 1 more Smart Citation
“…The ILC algorithm is often used to deal with the large-scale, time-domain responses of nonlinear systems; however, for multivariable systems, the iterative process will be very long. For the control system, which needs a fast response to restrain the flutter, especially for the actual hardware control system such as programmable logic controllers (PLCs) that are currently the controllers of most large wind turbines [15], it has lost practical significance and practical value because of the complexity of the most intelligent control algorithms, so this design in the present study, will further simplify the aeroelastic system.…”
Section: System Simplificationmentioning
confidence: 99%
“…Since the neuron node is capable of learning highly nonlinear dynamics in aerodynamic modeling [20], the adaptive adjustment process of K P and K D in the IILC control law Formula (33) is a complete proportional-derivative (PD) control process, and there are built-in PD controllers in PLCs' hardware, the IILC algorithm is more suitable for its engineering application in PLCs by using OPC technology [15] to connect the neural network theory in a PC and SNPD controller in PLC, which is also another advantage of the present design.…”
Section: An Improved Ilc (Iilc) Algorithm Based On Residual Effectmentioning
confidence: 99%
“…Theoretical modeling and vibration control for divergent motion of thin-walled pre-twisted composite blade were investigated based on linear quadratic Gaussian controller using Loop Transfer Recovery at plant input, with flutter suppression for divergent instability investigated by using an experimental platform based on hardware-in-the-loop technology to test the effectiveness of the proposed control algorithm. 12…”
Section: Introductionmentioning
confidence: 99%