High-Performance AC Power Source by Applying Robust Stability Control Technology for Precision Material Machining

2017 International Conference on Sensors, Materials and Manufacturing

工业技术;材料科学;机械制造

Chang, En-Chih^1

Department of Electrical Engineering, I-Shou University, Taiwan^1

关键词: Convergence speed;    Convergence time;    Nonlinear loading;    Optimization algorithms;    Robust stability;    Sliding function;    Steady state and transients;    Total Harmonic Distortion (THD);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/311/1/012005/pdf
DOI  :  10.1088/1757-899X/311/1/012005

来源: IOP

【 摘 要 】

This paper presents a high-performance AC power source by applying robust stability control technology for precision material machining (PMM). The proposed technology associates the benefits of finite-Time convergent sliding function (FTCSF) and firefly optimization algorithm (FOA). The FTCSF maintains the robustness of conventional sliding mode, and simultaneously speeds up the convergence speed of the system state. Unfortunately, when a highly nonlinear loading is applied, the chatter will occur. The chatter results in high total harmonic distortion (THD) output voltage of AC power source, and even deteriorates the stability of PMM. The FOA is therefore used to remove the chatter, and the FTCSF still preserves finite system-state convergence time. By combining FTCSF with FOA, the AC power source of PMM can yield good steady-state and transient performance. Experimental results are performed in support of the proposed technology.