Equalizing Aerodynamic Blade Loads Through Individual Pitch Control Via Multi-Blade Multi-Lag Transformation

[+] Author and Article Information
Stefano Cacciola

Dept. of Aerospace Science and Technology, Politecnico di Milano, Milano, Italy 20156

Carlo E.D. Riboldi

Dept. of Aerospace Science and Technology, Politecnico di Milano, Milano, Italy 20156

1Corresponding author.

ASME doi:10.1115/1.4037744 History: Received October 28, 2016; Revised August 14, 2017


Control algorithms for rotor load mitigation are today generally adopted by industry. Most of them are based on the Coleman transformation, which is easy to implement and bears satisfactory results when the rotor is balanced. A multitude of causes, e.g. blade erosion, dirt and especially pitch misalignment, may create significant imbalances. This gives birth to undesirable vibrations and reduced control performance in terms of load mitigation. In this paper, an alternative transformation is introduced, able to detect and quantify the rotor load harmonics due to aerodynamic imbalance. Next, a control algorithm, capable of targeting rotor imbalance itself and simultaneously lowering rotor loads, is presented. The effectiveness of the proposed solution is confirmed through simulations in virtual environment.

Copyright (c) 2017 by ASME
Your Session has timed out. Please sign back in to continue.






Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In