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Aimed at the problem that it is easy for buses to roll in the extreme-turn conditions, the paper finished a series of analysis. First, bus turning driving dynamics model was established based on the effect of suspension motion on roll angle. In the extreme-turn conditions Roll stability and critical roll angle threshold were analyzed, and formulas of roll angle prediction and roll angle threshold...
With the developments of robotics, more and more rehabilitation robots are used to assist traditional training in rehabilitation field. In this paper, a novel ankle robot combined with 3 degrees of freedom, full fill passive-active training, subjective awareness and objective training requirements was proposed. The requirement of ankle robot was analyzed based on the ankle physical structure and real...
The advancing of reverse engineering techniques has complicated the efforts in intellectual property protection. Proactive methods have been developed recently, among which layout-level IC camouflaging is the leading example. However, existing camouflaging methods are rarely supported by provably secure criteria, which further leads to over-estimation of the security level when countering the latest...
A friction modeling in zigzag and armchair lattice orientation of MoS2 has been demonstrated in this paper. Combing the assumption on the moving trajectories of the probe in both lattice orientations with two-dimension Tomlinson model, simulation of relationship between friction and orientation was smoothly performed with Matlab software. The lateral friction Microscopy(LFM) based experiment was conducted...
A nonlinear estimate filter was designed for a dynamic positioning system. The global exponential stability of estimate filter was proven using Lyapunov methods. The main advantage of the nonlinear design to Kalman filter is that the kinematics equations of motion need not be linearized. The proposed estimate filter includes an estimation of both the low-frequency position and velocity of the ship...
A positioning system is established and tested for meso machine tools. The design aims to develop practical microscale machine tools, improve the capability in difficult-to-machine material processing, resolve the contradiction between small size and high torque output. In order to maintain a mini volume and in terms of nowadays technology, ball screw driven by AC motor is the only way to achieve...
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