Large offshore wind power blade multi-point two-degree-of-freedom fatigue testing device and control method
A technology for offshore wind power and fatigue testing, applied in measuring devices, vibration testing, testing of mechanical components, etc., can solve the problems of high site requirements, difficult installation and maintenance, high equipment cost, etc., achieve small excitation force requirements and reduce workload , The effect of fast excitation response
Pending Publication Date: 2022-04-12
WUHAN UNIV OF TECH
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, although the hydraulic excitation equipment has the advantages of stable excitation frequency, and the function of buffering energy absorption between hydraulic cylinders, the excitation of several hydraulic cylinders will not cause large interference, and the output excitation force is stable. ; However, the hydraulic vibration device equipment requires a relatively high site requirement, high equipment cost, and is not easy to install and maintain.
Another invention is a two-axis vibration excitation device driven by a motor, but in this invention only two excitation sources are installed at one excitation position, which makes the coupling between the two motors more obvious
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0046] figure 1 Shown is a schematic structural diagram of a biaxial coordinated loading measurement device for wind turbine blade fatigue test, including a fixed base 1, a test blade 2, a strain gauge 3, a fixed fixture 4.1, a first additional mass 4.2, acceleration A gyroscope 5 , a swing direction exciter 6 , a swing direction exciter 7 and a controller 8 . The root end of the test blade 2 is connected to the base 1 through a flange; the strain gauges 3 are evenly distributed on the surface of the test blade 2; the vibration exciter 6 is connected to the fixing fixture 4.1 through screws; It is connected with the fixing fixture 4.1 by bolts and nuts; the acceleration gyroscope 5 is installed at the tip of the test blade 2;
[0047] The vibration exciter 6 includes: 6.1 represents a linear motor; 6.2 represents a motor guide rail; 6.3 represents a second additional mass; 6.4 represents a counterweight; 6.5 represents a wood core, and the linear motor 6.1 is fixed by screws....
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a large-scale offshore wind power blade multi-point two-degree-of-freedom fatigue test device and a control method. An electric drive inertial excitation device based on a shimmy direction and a hydraulic inertial excitation device based on a flapping direction are adopted, and multi-exciter loading can greatly improve the test precision and excitation capability of a fatigue loading test. The data acquisition system is composed of strain gauge acquisition, blade tip space pose change acquisition, displacement acquisition in the flapping and shimmy directions, control and acquisition of a frequency converter, and rotation speed and phase acquisition of a speed reducer. In order to eliminate the coupling effect generated in the wind power blade vibration excitation process, a vibration exciter synchronous PID control algorithm is designed, a motor and a hydraulic vibration exciter are controlled in a self-adaptive mode, and the control precision is within 5%. Based on the advantages of high reliability, good anti-interference performance, convenient maintenance and the like of PLC control, complex control rules are realized by adopting PLC feedback control, and synchronous control of fatigue loading is realized.
Description
technical field [0001] The invention belongs to the technical field of wind power blade fatigue test and the like, and in particular relates to a multi-point dual-degree-of-freedom cooperative loading test control method for wind turbine blade fatigue test. Background technique [0002] As an important energy pursued by modern society, clean energy is used by all countries in the world. Among them, wind energy as a pollution-free and renewable new energy has huge development potential, especially for coastal islands, remote mountainous areas with inconvenient transportation, sparsely populated grasslands and pastures, and those far away from the power grid and difficult to reach in the near future. Rural areas and frontier areas are of great significance as a reliable way to solve production and living energy. A wind turbine is a device that converts wind energy into electrical energy. As an important part of a wind turbine, the blade is very important for the analysis of b...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01M7/02G01M7/06
Inventor 张锦光杨桢邓伟安亚龙何珍钟
Owner WUHAN UNIV OF TECH