17,322 research outputs found
Design of time delayed chaotic circuit with threshold controller
A novel time delayed chaotic oscillator exhibiting mono- and double scroll
complex chaotic attractors is designed. This circuit consists of only a few
operational amplifiers and diodes and employs a threshold controller for
flexibility. It efficiently implements a piecewise linear function. The control
of piecewise linear function facilitates controlling the shape of the
attractors. This is demonstrated by constructing the phase portraits of the
attractors through numerical simulations and hardware experiments. Based on
these studies, we find that this circuit can produce multi-scroll chaotic
attractors by just introducing more number of threshold values.Comment: 21 pages, 12 figures; Submitted to IJB
A new approach to active vibration isolation for microgravity space experiments
A new method was developed to design an active vibration isolation system for microgravity space experiments. This method yields the required controller transfer functions for a specified transmissibility ratio. Hence, it is a straightforward task to guarantee that the desired vibration isolation performance is achieved at each frequency. The theory for such a controller design was presented by considering a single degree of freedom system. In addition, the magnitude of the input required by the new method has been found to be less than that used by a standard phase lead/lag compensator
Layout of Modern Converter Steel Plant for the Production of 1.5 Million Tonnes per year of Continuously Cast Billets
In the famework of an international tender a converter
steel plant has been proposed which will Rroduce 1.5 million tons of liquid steel and will be suitable for expansion to 3.0 m.t.p.a. of liquid steel. The product
of the steel plant is supposed to be cast to billets of max. 130 mm square
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