In this paper, a multi-LAVs’ aerial delivery areas-choosing method is brought forward, which aims at known targets which are located in a fixed area. This method takes the performance of LAV, especially minimum turning radius, into consideration, and incorporates AHP and Dubins’ path. Based on the discussion of general GA method, we design the IGA method to increase the convergence rate. By using this method, the LAVs can reach the target located at the longest distance within the minimum time. Simulation results show that the IGA method has a higher convergence rate than the general GA method, while the delivery areas can be chosen in an optimized way. The proposed method can be extended to the problem of multi-Dubins vehicles’ task assignment and path planning.

The Hard X-ray Modulation Telescope (HXMT) is an X-ray satellite devoted to a sensitive all-sky survey and to study timing and spectral characteristics of X-ray sources. In this paper, the requirement of planning for the satellite is described at first. And then based on the discussion of the observation requirement and the constraints of planning, an evolution scheduling algorithm is designed. The algorithm is based on NSGA-II. The observe windows of each observation are used as gene to composing a chromosome. The genetic operations, including selection, crossover and mutation, are based on the DNA coding. Results are presented according a test set, and some conclusions and possible improvements will finally be outlined.

For existing cable structures, vibration frequency method (VFM) seems to be the common way to determine the tensile force of the cables. However, the applicability of this method is limited by the specific conditions of cables. Only well tensioned slender cables with simple boundary conditions can be measured through VFM directly without causing much error. In this paper, the vibration mode of the cable is measured and then cable tension is calculated via energy conservation principle.

Increasingly large and complex structures make it more complicated in analysis, designing and construction, and through the amplification effect caused by the interaction of various parts of the structure, any tiny error in any link could cause huge damage to the building. However, the relative analysis theory and design method are not consummate enough to assess the influence of all kinds of errors. Under this circumstance, structural health monitoring system is an important guarantee to ensure the safety of the structures in both construction and operation stage, and at the same time contributes to make up for the deficiency of theory [1-2]. The Expo Axis project is the largest single project in Expo Site 2010 Shanghai. The Expo Axis project has adopted a whole new architecture form. The roof design as giant light cable-membrane structure about 1000 meter long and about 80 meter width. The computing displacement of the membrane roof is close to 4m. In order to ensure the safety of this structure, a real-time and long-term computer based health monitoring system is applied in the Axis structures.