The controller design and digital simulation for the hyper velocity kinetic energy missile is investigated. A mathematical model of the trajectory deviation from the line of sight was established, the guidance closed ...The controller design and digital simulation for the hyper velocity kinetic energy missile is investigated. A mathematical model of the trajectory deviation from the line of sight was established, the guidance closed loop was compensated with a phase advance lag corrective network, a selecting algorithm of the attitude control motors used to steer the missile's attitude was presented. In the presence of a wide variety of disturbances the results of digital simulation are satisfactory to circular error probability(CEP) being less than 0 5?m. The steering scheme utilizing attitude control motors as actuators to control the attitude of the missile is feasible.展开更多
This paper presents a method for solving the attitude control problem of high altitude airship (HAA) with aerodynamic fin and vectored thruster control. The algorithm is based on the synthetic optimization of dynamic ...This paper presents a method for solving the attitude control problem of high altitude airship (HAA) with aerodynamic fin and vectored thruster control. The algorithm is based on the synthetic optimization of dynamic performance and energy consumption of airship. Firstly, according to the system overall configuration, the dynamic model of HAA was established and the HAA linearized model of longitudinal plane motion was obtained. Secondly, using the classic PID control theory, the HAA attitude control system was designed. Thirdly, through analyzing the dynamic performance of airship with fin or vectored thruster control, the synthetic performance index function with different weighting functions was determined. By means of optimizing the obtained performance index function, the attitude control of high altitude airship with good dynamic performance and low energy consumption was achieved. Finally, attitude control allocation strategy was designed for the airship station keeping at an altitude of 22 km. The simulation experiment proved the validity of the proposed algorithm.展开更多
"给!"妻手持一沓百元大票,以那惯有的矜持冷峻语调对我说,"听说你的小娟考上了名牌大学,你能不表示一下?"我顿感血往上冲,不无几分愠怒地说:"你什么意思?""什么意思!"妻依然居高临下冷冷地说,&..."给!"妻手持一沓百元大票,以那惯有的矜持冷峻语调对我说,"听说你的小娟考上了名牌大学,你能不表示一下?"我顿感血往上冲,不无几分愠怒地说:"你什么意思?""什么意思!"妻依然居高临下冷冷地说,"瑛姐从 W 市电话告诉我小娟考上大学的事,你不知道吗?"她甩下钱,转身进了厨房。""你——"对着她修长绰约的背影,我张口结舌。妻的这一举措是什么意思?展开更多
文摘The controller design and digital simulation for the hyper velocity kinetic energy missile is investigated. A mathematical model of the trajectory deviation from the line of sight was established, the guidance closed loop was compensated with a phase advance lag corrective network, a selecting algorithm of the attitude control motors used to steer the missile's attitude was presented. In the presence of a wide variety of disturbances the results of digital simulation are satisfactory to circular error probability(CEP) being less than 0 5?m. The steering scheme utilizing attitude control motors as actuators to control the attitude of the missile is feasible.
文摘This paper presents a method for solving the attitude control problem of high altitude airship (HAA) with aerodynamic fin and vectored thruster control. The algorithm is based on the synthetic optimization of dynamic performance and energy consumption of airship. Firstly, according to the system overall configuration, the dynamic model of HAA was established and the HAA linearized model of longitudinal plane motion was obtained. Secondly, using the classic PID control theory, the HAA attitude control system was designed. Thirdly, through analyzing the dynamic performance of airship with fin or vectored thruster control, the synthetic performance index function with different weighting functions was determined. By means of optimizing the obtained performance index function, the attitude control of high altitude airship with good dynamic performance and low energy consumption was achieved. Finally, attitude control allocation strategy was designed for the airship station keeping at an altitude of 22 km. The simulation experiment proved the validity of the proposed algorithm.
文摘"给!"妻手持一沓百元大票,以那惯有的矜持冷峻语调对我说,"听说你的小娟考上了名牌大学,你能不表示一下?"我顿感血往上冲,不无几分愠怒地说:"你什么意思?""什么意思!"妻依然居高临下冷冷地说,"瑛姐从 W 市电话告诉我小娟考上大学的事,你不知道吗?"她甩下钱,转身进了厨房。""你——"对着她修长绰约的背影,我张口结舌。妻的这一举措是什么意思?
