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In this paper, a novel control scheme for a hypersonic vehicle during climbing phase is proposed. First, the six degree-of-freedom mathematical model of the hypersonic vehicle is presented. Second, the fuzzy sliding mode guidance law for climbing phase is designed combining the features of sliding model control and fuzzy control. To simplify the design of attitude controller, the rotational equations...
In the air-to-ground multi-target combat, the target attack order is of great importance to the efficient assignment of weapon resources. In accordance with the characteristics of multiple attribute decision and the threat assessment, a model for assessing targets' threat degree in air-to-ground multi-target attack is established based on the theory of unascertained measure. The targets' threat degree...
Winding molding is a commonly-used molding method for composite fiber materials, in which the fiber winding tension is an important parameter, since the winding tension directly influences the quality of winded products, making winding tension control a key technique in fiber winding. A new type closed-loop tension control system, with PLC as the main controller, the industrial control computer as...
This paper analyzes the behavior of DFIG and converter in the case of grid fault including symmetrical and unsymmetrical fault. First, the simple space vector models are presented to estimate the moduli of DFIG stator voltage in different grid fault. Then with the symmetrical components method, the dynamic response of DFIG and converter in grid fault is analyzed in details, and the equations of grid...
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