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A BP neural network controller is proposed for direct suspending control for Magnetic Suspended Flywheel System (MSFS) that is supported by Active Magnetic Bearings (AMB). A one hidden layer configuration is adopted in the BP neural network, and the back propagated algorithm for network weights updating is derived based on AMB's linear model. The discussed controller is implemented in the MSFS with...
In this paper, an active-passive hybrid method using negative capacitance branch circuits is used to suppress structural vibration. When a negative capacitance is connected to a shunt circuit of a piezoelectric element, it can increase the electromechanical coupling coefficient of the system and consequently improve the damping effect of the passive control as well as raise active control voltage...
The metal core piezoelectric fiber (MPF) is one of the new typical sensors and actuators. The metal core is precisely located at the center of the fiber and surrounded by the ceramic. The metal core can be used as an electrode and the other electrode is coated on the outer surface of the fiber. When an external voltage is applied between the electrodes, the electric field is assumed to be in the radial...
In this paper, an adaptive semi-active SSDV (synchronized switch damping on voltage) method based on the LMS algorithm is proposed and applied to the vibration control of a composite beam. In the SSDV method, the value of voltage source in the switching circuit is critical to its control performance. In the adaptive approach proposed in this study, the voltage coefficient is adjusted adaptively using...
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