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In this paper, two cooperative guidance laws based on two-point boundary value are designed to deal with the problem of cooperative encirclement and simultaneous attack under condition of both known target acceleration and unknown target acceleration. The only requirement for the multi-attacker communication network is that it contains a directed spanning tree. The guidance laws can function properly as long as at least one attacker can observed the target. The acceleration components along the attacker-target line of sight in the novel guidance laws can reduce the relative remaining distance between each of the attackers and the target at the same speed, thus completing simultaneous attack and avoiding the calculation of the remaining time. The components of the guidance laws perpendicular to the attacker-target line of sight can make the normal overload of relative motion zero, so that the trajectory will be smooth and the collision problem within the attacker can be avoided. Simulation results verified the practicability of the novel guidance laws., Comment: arXiv admin note: substantial text overlap with arXiv:1906.10790

In this paper, a modified four-channel time domain passivity approach is proposed for stable bilateral control of time-delay teleoperations. The passivity of the proposed approach has been analyzed theoretically and then proved by the simulation results. Compared with the two-channel time domain passivity approach, simulation results illustrate that the proposed approach has a better transparency.

This paper provides a new improved multidisciplinary optimization algorithm with better performance and discusses its application for aircraft synthetic design. The new iterative framework combines linear quadratic (LQ) optimal control method, structures, aerodynamics and propulsion to design synthetic optimal problem, which reduces redundant system analysis, avoids local optimization, and improves the traditional design method which separated aerodynamic design and control method. Using the method of diagonal convergence, improved algorithm can accelerate the convergence speed and ensure that the sensitivity matrix does not tend to be singular. The simulation shows that this new closed-loop integrated method can achieve stable flight optimization results.