Hongyun Yu

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An extended proportional navigation guidance (EPNG) law based on Lyapunov stability is proposed applying the concept of virtual target and 3-dimensional pursuit-evasion model. This guidance law can satisfy the requirements of miss distance and terminal angle, thus it guarantees that different parts of the large-airspace varying trajectory link smoothly.(More)
In order to remove the nonminimum phase characteristics of missile overload output, the output-redefinition technique is applied to the missile's overload control system. Because the overload control system doesn't control missile's attitude angle and angle rate, they are treated as uncertainty of the system. In order to improve the robustness of the(More)
Existing data-centric cloud services are not flexible enough to meet the requirements of different tenants when facing diverse business scenes. Since they focus more on the functional aspects than the data aspects despite the close relevance between business and data, it strongly limits the scalability, customizability and other possible advantages for(More)
Team Software Process (TSP) has been widely used in many top software development enterprises, which has created great benefits for these enterprise. This paper describes researches and implementation of TSP and states TSP and three parts including team formation, team launch and team work. It introduces the implementation process of TSP, and analyzes the(More)
A new intelligent global terminal backstepping design method is proposed for a class of high-supersonic missiles. It has several advantages as follows. Firstly, the differential bomb problem is avoided because of the no time derivative design concept. So the control law is simplified and the system becomes more stable and robust. Secondly, by adopting the(More)
A design method of block diagonal controller is presented for a nonlinear cross beam experiment system. The nonlinear mathematical model of a cross beam experiment system is established at first. Based on the theory of exact linearization via feedback, a design method of block diagonal controller composed of inverse solution is presented. A block diagonal(More)
The cross beam that is controlled by air-operated valve is a typical two time delays dynamic system involving unknown parameters in engineering. The paper handles a new method to research the stability of this system on the basis of generalized Strum theory. The analysis focuses on the stability switches of the system with increase of the time delay from(More)
Considered both the situation with unknown control function matrices and the situation with linear unmodeled input dynamics, adaptive neural robust controller was designed by using adaptive backstepping method for a class of multi-input to multi-output nonlinear systems which could be turned to "standard block control type". Furthermore, it is possible to(More)