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An effective pressure estimation algorithm of ABS for motorcycles was proposed in this paper to get the relatively accurate wheel cylinder pressure. Firstly, the performance characteristics of hydraulic control unit was studied and the vehicle model was established by using BikeSim. Next, the pressure estimation algorithms of master cylinder and wheel cylinder were studied. The estimated pressure...
For constrained three-link manipulation robots it is shown how the complexity of controlling anthropomorphic arm-like manipulators can be considerable ameliorated by designing a sliding-mode control. First, a representation singular system model of three-link manipulators is established by employing constrained equations and corresponding descriptions of force restriction. Then sliding-mode control...
This paper develops an adaptive control scheme for position and velocity tracking control of high speed trains under uncertain system nonlinearities and actuator failures. Neural networks with self-organizing capabilities are integrated into control design, where the number of the neurons can be adjusted online automatically, so as not only to avoid the problem inherent in the NN with fixed structure...
Lamb wave has been widely used for large structure inspection. Generally, piezoelectric transducers or electromagnetic acoustic transducers (EMATs) can be used to generate Lamb wave. The driving mechanism of EMATs includes Lorentz force, magnetization force and magnetostriction. A finite element model for magnetostrictive Lamb wave EMATs has been presented including the three mechanisms. The simulation...
Finite Element Method (FEM) model was built and model analysis was executed for a thin-wall cylinder dynamometer with ANSYS, the natural frequencies and modal shapes of the dynamometer are obtained. The topological optimization was done with the variable-density method. The utilization rate of materials was improved, and the lower model frequencies were increased.
We present a novel method to efficiently control the smoke's target shape and keep smoke alive. Given an arbitrary object's shape represented by a geometric model, our method can generate an animation in which smoke quickly forms the shape. It looks like a cloud of moving smoke that fundamentally maintains the shape and fluid-like behavior. By adding some control forces to the physics-based free flow,...
ROI of BT projects is involved in the benefit distribution and risk allocation between BT project initiator (local government or local governmental branch) and BT project investor and constractor (the private sector), and is related to the success or failure of BT projects. Up to now, the government departments have not promulgated laws or regulations about how to make sure ROI of BT project. So how...
16V240ZJ diesel engine is a main internal combustion engine of the diesel locomotive on China mainline railways. In this paper, we use the internal combustion engine dynamics simulation software to establish 16V240ZJ diesel engine dynamics virtual prototype and the crank system dynamics modeling. After analysis, there are no significant differences between Simulation results and the experimental data...
This research was developed and aimed at an embedded controller to achieve an active variable damping control to magnetorheological fluid damper under impact load. Its character of impact load is firstly analyzed and its working principle of MR damper applied into anti-shock engineering design is also introduced. Then, an impact test has been done by using the developed test rig in order to investigate...
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