First, wind turbine aerodynamics and variable pitch control process was discussed to provide theoretical studying basis for studying of the system design and control strategy.
首先对风力机空气动力学和变桨距控制过程进行了探讨，为系统的设计及控制策略的研究提供理论基础。
2
In need of theoretical research and practical application, the study of unsteady aerodynamics model has become particularly important.
由于理论研究和实际应用的需要，非定常空气动力学模型的研究变得尤为重要。
3
Based on the research of wind turbine aerodynamics characteristics, a model was established and the theoretical foundation of pitch control was built.