Delay and fractional order parameter optimization based on optimization particle swarm optimization | |
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( Volume 3 Issue 1,January 2017 ) OPEN ACCESS | |
Author(s): | |
Baozhong Ma, Chuanbo Ren, Jilei Zhou | |
Abstract: | |
Time-delay vibration Control Technology is applied to the precision instrument workbench, whose influence is analyzed jointly by the control of fractional derivative and delayed feedback. Delay feedback control with fractional derivative is considered the workbench modeling. The stability switch theory is used to analyze the stability of the delayed dynamical systems, and find the system stable region. In the frequency domain, the objective optimization function is established based on the frequency domain. The delay feedback control parameters are optimized by the PSO (particle swarm optimization) and we can get the optimized control parameters. What’s more, the system vibration response simulation analysis is taken under time domain. Simulation results show that the fractional derivative and delay vibration control technology combined with the active suspension system can achieve good damping effect under harmonic excitation and random road excitation. Simulation results show that fractional derivative and delay vibration control technology combined with the workbench is less than the without fractional derivative and delay vibration control technology combined value is reduced by 99%, The value of the velocity and acceleration feedback is reduced by 99% and 68% under harmonic excitation. It shows that the fractional derivative and delay vibration control technology combined with the precision instrument workbench can effectively reduce vibration and provide a theoretical basis for active control technology. |
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