Multi-dimensional vibration reduction of wind tunnel sting based on active disturbance rejection control
To address the issue of large amplitude,low-frequency vibrations between the aircraft model and the support system caused by the low stiffness and damping characteristics of traditional cantilever tail support rods,a disturbance rejection-based multi-dimensional vibration control technology for the wind tunnel sting is proposed.Firstly,a multi-dimensional active vibration reduction system for the sting based on a piezoelectric stack is designed,followed by finite element analysis and system identification to obtain its modal characteristics.Next,the parameters of the active disturbance rejection control(ADRC)algorithm are initially tuned through bandwidth parameterization to reduce complexity,and a particle swarm optimization(PSO)algorithm is introduced for further optimization of the controller parameters.The particle swarm-optimized ADRC method demonstrates strong disturbance rejection capability and fast response performance.Experiments conducted on a ground control platform based on DSPACE compare the proposed algorithm with traditional methods,validating the effectiveness of the algorithm.Experimental results show that,compared to the conventional PID algorithm,the proposed algorithm significantly shortens the vibration attenuation time and notably reduces both the steady-state amplitude and vibration energy.
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维普
