کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11027863 | 1666149 | 2018 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Towards realistic non-linear receding-horizon spectral control of wave energy converters
ترجمه فارسی عنوان
در راستای کنترل دقیق غیر خطی غیر خطی افقی طیفی مبدلهای انرژی موج
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کلمات کلیدی
Non-linear systems - سیستم های غیر خطیGaussian process - فرآیند گاوسیextended Kalman filter - فیلتر کلمن را گسترش دادWave energy converters - مبدل های انرژی موجConstraints - محدودیت هاMeasurement noise - نویز اندازه گیریtrajectory tracking - پیگیری مسیرOptimal control - کنترل بهینهReceding-horizon control - کنترول افقی کنترل
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی هوافضا
چکیده انگلیسی
Non-linear, power-maximising control of wave energy converters (WECs) can be achieved within a receding-horizon control framework, whereby an upper loop calculates a reference trajectory in real-time, ensuring maximal power absorption under operational constraints, while a tracking loop drives the device along the generated trajectory. This paper articulates the four fundamental components of such a control strategy: reference generation calculations, tracking loop, and wave excitation estimation and forecasting. The upper-loop optimisation problem is efficiently solved through a Fourier spectral method, taking into account non-linear dynamics and constraints. Tracking is achieved through a linear state feedback, combined with a non-linear feed-forward term. An extended Kalman filter is used for excitation force estimation, based on noisy WEC position and acceleration measurements. Finally, wave excitation forecasts are based on a linear predictor, whose coefficients are derived from the wave spectrum (on a sea-state-by-sea-state basis). The practical issues and trade-offs, which arise when the four components listed above are combined within a practical implementation, are investigated by means of realistic numerical simulations, using a WEC model comprising a combination of static and velocity-dependent non-linear forces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Control Engineering Practice - Volume 81, December 2018, Pages 145-161
Journal: Control Engineering Practice - Volume 81, December 2018, Pages 145-161
نویسندگان
Alexis Mérigaud, John V. Ringwood,