电网技术
電網技術
전망기술
POWER SYSTEM TECHNOLOGY
2012年
2期
131-135
,共5页
李天云%朱建华%袁明哲%于兴林
李天雲%硃建華%袁明哲%于興林
리천운%주건화%원명철%우흥림
扩张状态观测器%微分同坯映射%励磁系统%鲁棒%控制
擴張狀態觀測器%微分同坯映射%勵磁繫統%魯棒%控製
확장상태관측기%미분동배영사%려자계통%로봉%공제
extended state observer (ESO)%differential homeomorphic mapping%excitation system%robust control
通过微分同坯映射将仿射非线性系统方程的非线性因素转换到含有控制输入的状态方程,转换后的系统中所有不确定项都归结到扩张状态变量中。利用扩张状态观测器观测该部分,并经状态反馈将其线性化。由于实际系统存在观测误差和模型误差,为了进一步考虑反馈线性之后系统的不确定性,将鲁棒控制引入励磁控制器的设计之中,使得设计的控制器具有更好的鲁棒性,最后在Matlab上进行仿真试验。仿真结果证明了该方法的有效性。
通過微分同坯映射將倣射非線性繫統方程的非線性因素轉換到含有控製輸入的狀態方程,轉換後的繫統中所有不確定項都歸結到擴張狀態變量中。利用擴張狀態觀測器觀測該部分,併經狀態反饋將其線性化。由于實際繫統存在觀測誤差和模型誤差,為瞭進一步攷慮反饋線性之後繫統的不確定性,將魯棒控製引入勵磁控製器的設計之中,使得設計的控製器具有更好的魯棒性,最後在Matlab上進行倣真試驗。倣真結果證明瞭該方法的有效性。
통과미분동배영사장방사비선성계통방정적비선성인소전환도함유공제수입적상태방정,전환후적계통중소유불학정항도귀결도확장상태변량중。이용확장상태관측기관측해부분,병경상태반궤장기선성화。유우실제계통존재관측오차화모형오차,위료진일보고필반궤선성지후계통적불학정성,장로봉공제인입려자공제기적설계지중,사득설계적공제기구유경호적로봉성,최후재Matlab상진행방진시험。방진결과증명료해방법적유효성。
By means of differential homeomorphic mapping, nonlinear elements in affine nonlinear system equation are transformed into the state equation containing control inputs, and in the transformed system all uncertain items are come down into extended state variables. The extended state variables are observed by extended state observer (ESO) and linearized by state feedback. In view of observation error and model error in actual system, to further consider the uncertainty of the system after feedback linearization, the robust control is led into the design of excitation controller to make the designed controller possessing better robustness. The effectiveness of the proposed method is verified by results of Matlab based simulation.