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For the three-phase pulse-width modulated (PWM) rectifiers, the controller's performance can be influenced by the mathematic model error, parameter variation and external disturbances, etc. This paper presents a robust H∞ control method for the PWM rectifiers to improve the control performance. The outer voltage loop controller and the inner current loop controller are designed separately. Based on...
This paper presents two combustor modeling approaches for real time turbofan engine model. The two approaches are called Integral Approach and Hybrid Approach. Integral Approach resorts to the effect of mass and energy storage in a volume to establish the pressure and temperature differential equations. Whereas Hybrid Approach considers only the effect of mass storage in a volume to achieve pressure...
The four-leg inverter is able to provide simultaneous power supply for three-phase or single-phase load with symmetrical voltage and constant frequency. The prerequisite is that the four-leg inverter must be controlled appropriately, so the synchronous rotating control strategy based on the decomposition sequence is proposed in this paper. Firstly, the inverter's mathematical model was given. Based...
This paper presents an on-line flow control system for variable rate spray based on LabVIEW. To solve the control problem of micro-flow or low flow on pesticide in the course of variable rate spraying, a variable rate control system was developed with a NI DAQ, a flowmeter, an electronic control injector of vehicle, etc. The characteristics of the flow control system, such as development platform,...
Because of the current control systems are all nonlinear control systems, how to set up a mathematical model of nonlinear control systems has been a hot issue in the study of control, such problems are solved with neural network modeling of the inverse system method. Internal Model Control (IMC) is the new control strategies evolved from the predictive control, to linear systems given by transfer...
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