The controllable suspension system can improve the performances of off-road vehicles both on road and cross-country. So far, four controllable suspensions, that is, body height control, active, semi-active and slow-ac...The controllable suspension system can improve the performances of off-road vehicles both on road and cross-country. So far, four controllable suspensions, that is, body height control, active, semi-active and slow-active suspensions, have been developed. For off-road vehicles, the slow-active suspension and the semi-active suspension which have controllable stiffness, damping and body height are more appropriate to use. For many years, some control methodologies for controllable suspension systems have been developed along with the development of modern control theory, and two or more original control methods are integrated as a new control method. Today, for military or civilian off-road vehicles, the R&D of controllable suspension systems is ongoing.展开更多
In order to increase the aircraft＇s survival in the flight mission, it is necessary to carry out flight mission planning, which includes TF/TA2（ terrain following/terrain avoidance/threat avoidance）. An approach to...In order to increase the aircraft＇s survival in the flight mission, it is necessary to carry out flight mission planning, which includes TF/TA2（ terrain following/terrain avoidance/threat avoidance）. An approach to 3D-route planning based on A ＊ heuristic search algorithm was selected to determine the routes of fiber optic guidance missile＇ s cruise segment. The cost function was discussed, which was mainly related to the physical obstacle, threat exposure, and aircraft performance characteristics. The digital map techniques were presented, which included setting ＂no-go＂ area according to fiber＇s safety requirement. The optimal or the sub-optimal route was obtained, while the cost function constraints were satisfied and the stored terrain obtained from a real terrain was digitized. The algorithm is validated through simulation and can fulfill the route planning task which focuses on the cruise segment of fiber optic guidance missile.展开更多
文摘The controllable suspension system can improve the performances of off-road vehicles both on road and cross-country. So far, four controllable suspensions, that is, body height control, active, semi-active and slow-active suspensions, have been developed. For off-road vehicles, the slow-active suspension and the semi-active suspension which have controllable stiffness, damping and body height are more appropriate to use. For many years, some control methodologies for controllable suspension systems have been developed along with the development of modern control theory, and two or more original control methods are integrated as a new control method. Today, for military or civilian off-road vehicles, the R&D of controllable suspension systems is ongoing.
基金Sponsored by the Ministerial Level Advanced Research Foundation(51401050105BQ01)
文摘In order to increase the aircraft＇s survival in the flight mission, it is necessary to carry out flight mission planning, which includes TF/TA2（ terrain following/terrain avoidance/threat avoidance）. An approach to 3D-route planning based on A ＊ heuristic search algorithm was selected to determine the routes of fiber optic guidance missile＇ s cruise segment. The cost function was discussed, which was mainly related to the physical obstacle, threat exposure, and aircraft performance characteristics. The digital map techniques were presented, which included setting ＂no-go＂ area according to fiber＇s safety requirement. The optimal or the sub-optimal route was obtained, while the cost function constraints were satisfied and the stored terrain obtained from a real terrain was digitized. The algorithm is validated through simulation and can fulfill the route planning task which focuses on the cruise segment of fiber optic guidance missile.
