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The amphibious robot, which has favourable adaptability to the practical environment and good stability to move, is applied to a large number of areas such as rescue realm, mine countermeasures, pipeline inspections and underwater archaeology. In this paper, we present a novel amphibious spherical robot system, and the dynamic simulation is made by virtual prototyping technology. The design structure...
A command filtered back-stepping path following control is exploited to design a dynamic state-feedback controller for a Water-jet-based Spherical Underwater Vehicles, which obviates the computation of analytic derivatives in the traditional back-stepping design. The ISS-modular approach provides a simple and effective way for controlling non-linear Underwater Vehicle satisfying the strict-feedback...
This paper presents a numerical method to calculate the aerodynamic force and torque for the complex spacecraft considering components blocking. The Square Division Method (SDM) is applied to analyze and therefore evaluate the space station's structure. The efficiency and accuracy of the SDM are investigated in the simulation section primarily. Then major structures of the space station are analyzed...
A three-dimensional model of the car has been established with SolidWorks to solve the inconvenience of using special software of vehicle simulation analysis, and has been imported into Simulink. After that, a 16-DOF car dynamics model has been established, and the angle step input response has been analyzed. This analysis process avoided complicated formula, and provided basis for the realization...
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...
Morphing concepts for missiles have been a topic of current research interest in aerospace engineering. For the morphing wings technology of missile, a kind of autopilot design method is proposed by H∞ control theory. In order to have the better flight performance in the different regimes, the missile can automatically change the wings area symmetrically. The nonlinear dynamic model is established,...
In order to elevate the driving stability of tractor-semitrailer for automated vehicle control, the issue of automated steering and independent braking control of a tractor-semitrailer vehicle system is delivered. The input/output linearization and Lyapunov minimax approach were used and combined in the design of the control. The design was programmed and simulated in Matlab. The results show that...
The dynamics of the UAVs are highly nonlinear and continuously vary with time. Also they are subjected to severe external disturbances. Due to this, dynamic and parametric uncertainties arise in the mathematical model of the UAVs over different operating conditions. This paper addresses the problem of designing robust control system for UAVs in the presence of uncertainties using minimax LQG (linear...
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 problem of attitude control for variable-bend-tail vehicle, the mathematics models are established and the robust attitude control system is proposed based on variable structure control theory. The movement model of the bend tail section is derived from considering the coupling mutual action between tail and front of vehicle, and the nonlinear mathematics dynamic model of variable-bend-tail...
Based on the geometry parameters of forest fire patrol and saving vehicle, the model of whole vehicle is built up. Then combined finite element analysis with multi body dynamic, this paper analyzes the process of loading to the model and acquires the time-displacement curve on various velocities and responding. Though adding spring to simulate real-vehicle moment, and adjusting stiffness to simulate...
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