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This paper provides a detailed simulation of commutation failures in line-commutated thyristor converters. Theoretical analysis of commutation failure is presented. Influencing factors (such as voltage drop, voltage decreasing velocity, phase shift over zero of commutation voltage, HVDC controller) of both AC system and HVDC system on commutation failure are discussed in this paper. Then improvement...
With respect to a kind of missile with morphing wings, six-degree-of-freedom dynamics mathematical model including morphing wing dynamic was established using momentum principle, and guidance system model was presented, at the same time the whole attitude control system for missile with morphing wings was designed based on variable structure control theory. In order to prove the correctness of the...
The influence of the orbit control force on the flexible satellite is under consideration. The dynamics model of the satellite with a large solar panel is established via Lagrange equations. The dynamic characters of the system are analyzed. The coupling coefficient matrixes between the motion of the satellite and the flexible vibration are related to the fixing position and fixing angle of the flexible...
With respect to a kind of missile with deflectable nose, six-degree-of-freedom dynamics mathematical model including deflectable nose dynamic was established using momentum principle, and guidance system model was presented, at the same time the whole attitude control system with deflectable nose was designed based on variable structure control theory. In order to prove the correctness of the validity...
According to the bad control effect of PID in parameters adjusting in time-delay system, DMC prediction control is applied to time-delay system, and then this method is simulated in MATLAB. Simulation example illustrates that robustness and anti-interference are better by DMC prediction control than PID. Not only the regulation velocity is faster, but also the method of parameter adjusting is simpler...
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