CAJ | 학술논문

某型火箭炮交流永磁伺服系统的转动惯量、系统的模型参数以及外部干扰等，在火箭炮发射过程控制中是时变的，因此导致数学模型参数严重不确定，是一个典型的非线性、时变不确定系统。如何确保系统在如此恶劣的工况，依然拥有良好的性能，即具备较强的鲁棒性是控制领域的一大难题。现代控制理论中的滑模控制具有实现简单、鲁棒性强的优势，已经得到了广泛应用。但是对于抖振仍无能为力，该文将一种分数阶滑模控制策略应用到系统控制中，利用分数阶系统随时间缓慢衰减的特性减小抖振。实验结果表明，与常规PID控制器相比，该控制器可削减抖振，减小误差，同时具有较强的鲁棒性。
모형화전포교류영자사복계통적전동관량、계통적모형삼수이급외부간우등，재화전포발사과정공제중시시변적，인차도치수학모형삼수엄중불학정，시일개전형적비선성、시변불학정계통。여하학보계통재여차악렬적공황，의연옹유량호적성능，즉구비교강적로봉성시공제영역적일대난제。현대공제이론중적활모공제구유실현간단、로봉성강적우세，이경득도료엄범응용。단시대우두진잉무능위력，해문장일충분수계활모공제책략응용도계통공제중，이용분수계계통수시간완만쇠감적특성감소두진。실험결과표명，여상규PID공제기상비，해공제기가삭감두진，감소오차，동시구유교강적로봉성。
Rotation inertia, model parameters and outer disturbance of an AC PMSM system are con-tinuously varying during launching, thus its mathematical model is seriously uncertain, and it is a typical nonlinear, time varying system. How to guarantee the system possess good performances under such a bad circumstance is a big problem for control field. Sliding mode control ( SMC) of modern control theory has simple realization and strong robustness, and is widely used. But it is useless to chattering. Based on such a background, a fractional order SMC is utilized to system control, which uses character of slow de-scending versus time of fractional order system. Experimental results show that compared with PID con-trol, this controller can decrease chattering and error, and has strong robustness.