电子科技大学学报
電子科技大學學報
전자과기대학학보
Journal of University of Electronic Science and Technology of China
2015年
6期
869-875
,共7页
航空%控制策略%煤油%平均值模型%油膜补偿%二冲程发动机
航空%控製策略%煤油%平均值模型%油膜補償%二遲程髮動機
항공%공제책략%매유%평균치모형%유막보상%이충정발동궤
aviation%control strategy%kerosene%mean value model%oil film compensating%two- stroke engine
采取一种基于平均值模型的喷油控制策略，根据容积法公式实时计算进气空气流量，建立进气流量估计器，同时采用油膜补偿控制策略，实现对稳态工况和瞬态工况的精确喷油控制。利用Matlab/Simulink工具，建立平均值模型和油膜补偿控制模型，仿真并与试验数据进行了对比。仿真结果表明，该控制策略可以实现对稳态工况和瞬态工况的精确空燃比控制，验证了该控制策略的有效性和实用性。
採取一種基于平均值模型的噴油控製策略，根據容積法公式實時計算進氣空氣流量，建立進氣流量估計器，同時採用油膜補償控製策略，實現對穩態工況和瞬態工況的精確噴油控製。利用Matlab/Simulink工具，建立平均值模型和油膜補償控製模型，倣真併與試驗數據進行瞭對比。倣真結果錶明，該控製策略可以實現對穩態工況和瞬態工況的精確空燃比控製，驗證瞭該控製策略的有效性和實用性。
채취일충기우평균치모형적분유공제책략，근거용적법공식실시계산진기공기류량，건립진기류량고계기，동시채용유막보상공제책략，실현대은태공황화순태공황적정학분유공제。이용Matlab/Simulink공구，건립평균치모형화유막보상공제모형，방진병여시험수거진행료대비。방진결과표명，해공제책략가이실현대은태공황화순태공황적정학공연비공제，험증료해공제책략적유효성화실용성。
Due to inherent short-circuit loss of the inlet pre-mixed two-stroke engine, the actual air-fuel ratio feedback control cannot be performed by using the oxygen sensor. In addition, the inlet pressure under transient conditions cannot be measured truly, yielding error in air flow into the cylinder, because of inlet filling and emptying effect under transient conditions. This paper develops a mean value model based injection control strategy, where the intake air flow is calculated according to the volumetric method formula in real time, and an intake flow estimator adopting the film compensation control strategy is established to realize precise control of fuel injection under steady-state and transient conditions. A mean value model and the film compensation control simulation are performed with the Matlab/Simulink tool and compared with the experimental data. The results show that this control strategy can achieve precise control of the air-fuel ratio for transient and steady state conditions.
