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This paper presents a disturbance feedforward control strategy for active vibration isolation systems with internal air mount dynamics. First, a parametric model of an air mount system including a Helmholtz resonance is derived, which is an extension to the widely used massless spring-damper models for vibration isolators. Second, a self-tuning feedforward controller is proposed that fine-tunes the...
It is well known that in all FDTD simulations for predicting electromagnetic responses of various two- and three-dimensional structures, we always need to generate their appropriate meshes. In particular, for conformal and other enhanced FDTD algorithms, appropriate meshing is very important and it is directly related to the simulation accuracy. The real-world model, such as aircraft and ship platform...
The predictive control of purification system of air separation plant was researched based on the modified orthogonal signal of partial least squares method. It will analyze several defects of air separation plant and purification systems, the short switching time can reduce the useful life, the long time of the regeneration can lead large consumption of the impure nitrogen and so forth. A least squares...
Mathematical simulation and experimental study for the influence of pulverized coal size on NOx emission performance in a bench scale furnace have been done. The results show that there exists a critical diameter (dc). If d < dc, the NOx concentration reduces with the decrease of pulverized coal size. If d > dc , the NOx concentration reduces with the increase of the pulverized coal size. The...
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