摘要
为了验证风机叶片能够承受设计规定的极限载荷,保证试验弯矩分布尽可能接近设计值,研究了叶片静力加载节点优化及试验。采用多点加载模式,优化各节点的牵引力,匹配加载过程的叶片弯矩;基于分布式多级网络控制结构,设计动态主从式PID控制算法,协调各个节点的牵引力,实现叶片5节点全尺寸静力加载试验。现场试验证明:加载过程中加载点牵引力能保持平稳、协调变化,加载点的牵引力过程误差最大值约为±5%,测量点的挠度误差均低于±7%,获得较好的控制效果,满足风机叶片静力加载试验要求。
In order to verify the limit load of blade in its design life can meet the design requirements,the test system of full-scale static loading for wind turbine blade ultimate load testing is designed. The traction force of each node is optimized to get bigger reasonable traction force,and moment calculation software is designed to verify that he bending moment static loading process is matched. Based on the distributed multi-networks control structure,The dynamic master-slave proportion-integral differential（ PID） control algorithm is designed to coordinate static loading during traction coupling,and to realize five nodes full-scale static loading test for the fan blade. which meet the reqiurements of static loading test. Field experiments shows that the control strategy of loading system is effective,the maximum traction force error of loading point is about ± 5%,the deflection error of measuring points were less than ± 7%,the traction coupling during static loading process is reduced and good control effect is achieved.
出处
《机械科学与技术》
CSCD
北大核心
2016年第1期17-22,共6页
Mechanical Science and Technology for Aerospace Engineering
关键词
静力加载
试验
风机叶片
多目标优化
耦合控制
algorithms
calculations
computer simulation
computer software
control
design of experiments
design
efficiency
error analysis
errors
experiments
mathematical models
MATLAB
matrix algebra
measurements
optimization
schematic diagrams
sensors
three term control systems
turbornachine blades
wind turbines
loading
