Minimizing Test Frequencies for Linear Analog Circuits: New Models and Efficient Solution Methods

Two models of the yaw behavior of horizontal axis wind turbines are presented and discussed. Emphasis in this paper is on the description of the models and underlying assumptions with details of the equations and solution methods referenced in technical reports. The more complex model (YawDyn) considers the coupling of blade flap motions and yaw motions which result from temporal and spatial variations in the approaching wind speed. The new methods are unique in that they simultaneously model the effects of skewed wake aerodynamics and blade stall. Both of these effects must be considered if yaw behavior is to be adequately understood. The models are validated by comparison with other prediction techniques, wind tunnel tests and full-scale atmospheric tests. In all cases the models are shown to give excellent qualitative agreement and reasonable quantitative agreement. It is concluded that the new models represent a significant improvement in the methods available to the wind turbine designer for understanding yaw loads and motions.

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On concurrent multiple error diagnosability in linear analog circuits using continuous checksum

International Journal of Circuit Theory and Applications ◽

10.1002/(sici)1097-007x(199801/02)26:1<53::aid-cta990>3.0.co;2-v ◽

1998 ◽

Vol 26 (1) ◽

pp. 53-64

Author(s):

Yingquan Zhou ◽

Mike W. T. Wong ◽

Yinghua Min

Keyword(s):

Analog Circuits ◽

Linear Analog ◽

Multiple Error

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Verification of transient response of linear analog circuits

Proceedings 13th IEEE VLSI Test Symposium ◽

10.1109/vtest.1995.512615 ◽

2002 ◽

Cited By ~ 12

Author(s):

A. Balivada ◽

Y. Hoskote ◽

J.A. Abraham

Keyword(s):

Transient Response ◽

Analog Circuits ◽

Linear Analog

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Cycling verify: fault diagnosis for linear analog circuits based on symbolic calculus and interval algebra

IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276) ◽

10.1109/imtc.2002.1006908 ◽

2003 ◽

Cited By ~ 1

Author(s):

F. Filippetti ◽

M. Artioli

Keyword(s):

Fault Diagnosis ◽

Analog Circuits ◽

Symbolic Calculus ◽

Interval Algebra ◽

Linear Analog

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Modeling of pressure–volume controlled artificial respiration with local derivatives

Advances in Difference Equations ◽

10.1186/s13662-020-03204-9 ◽

2021 ◽

Vol 2021 (1) ◽

Author(s):

Bahar Acay ◽

Mustafa Inc ◽

Yu-Ming Chu ◽

Bandar Almohsen

Keyword(s):

Efficient Solution ◽

Clinical Medicine ◽

Artificial Respiration ◽

Pd Controller ◽

Governing Equations ◽

Conformable Derivative ◽

Solution Methods ◽

Conformable Derivatives ◽

Derivatives Of ◽

Volume Controlled

AbstractWe attempt to motivate utilization of some local derivatives of arbitrary orders in clinical medicine. For this purpose, we provide two efficient solution methods for various problems that occur in nature by employing the local proportional derivative defined by the proportional derivative (PD) controller. Under some necessary assumptions, a detailed exposition of the instantaneous volume in a lung is furnished by conformable derivative and such modified conformable derivatives as truncated M-derivative and proportional derivative. Moreover, we wish to investigate the performance of the above-mentioned operators in applications by plotting several graphs of the governing equations.

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