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This paper proposes a novel self-healing control method for satellite attitude tracking based on simultaneous fault estimation and control design. The proposed method integrates the fault estimation and fault-tolerant control units in a dynamic system, which is less complex and more reliable than the separately designed self-healing architectures. In this paper, the model reference approach is used...
The inertial stick-slip platforms driven by piezoelectric ceramics have comprehensively application in the field of nanomanipulation and nanoassemblies field. In this paper, our investigation is mainly focused on designing and manufacturing a novel structure of inertial stick-slip platform. There are some advantages that higher integration and consistency of every step, more easily changing the friction...
The technology of micro-operation robot is not only an important component in MEMS (Micro Electro Mechanical Systems), but also a new highlight in robot technology as well. Especially, precision position technology driven by PZT actuator is indispensability part in micro-operation robot. This article focuses on precision position technology in micro-operation robot based on inertial stick-slip driving...
In this paper, the relationship of the movement of stick-slip driving and the step time was studied. Firstly, the research status and the principle of stick-slip driving was introduced. Secondly, the math model of the every step displacement and velocity of stick-slip driving was built. By using mathematical models, the relationship curve of the every step displacement and the step time was received...
The conventional theory of sampling inspection is not suitable for the quality inspection of ocean data due to its specific characters such as magnanimity, multi-source, multi-dimensions, various types, and obvious spatiality. Thus, in this paper, we proposed a novel multi-scale fuzzy sampling model based on fuzzy mathematics. Given their magnanimity, multi-dimensions, and various types, the ocean...
Taking the estimation of area-percent about different land use in certain city as an example, we evaluated the effect of simple random sampling, stratified sampling based on administrator region, stratified sampling based on knowledge and stratified-systematic sampling based on spatial autocorrelation. Sample size and precision (standard deviation) were made decision criteria to estimate the effect...
A basic problem may be often encountered when people construct smooth surface that interpolates the given curve meshes. In general, object surface can be divided into triangular and quadrangular areas by the given curve meshes. The problem is that while the methods satisfy the continuity and interpolation requirements, they often fail to produce pleasing shapes, or in reverse to the condition. In...
The vulnerability is property that the structure and function of system are easy to be destroyed after certain external disturbances. The status of vulnerability study on water resources system at present has been pointed out. A new vulnerability assessment index system has been established. A fuzzy clustering method is used to evaluate the vulnerability classification of water resources system. An...
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