遺伝的プログラミングによるアナログ電子回路の自動設計
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概要
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A synthesis procedure of analog electronic circuits involves the design of their input-output characteristic and the selection of suitable elements. The design of analog electronic circuits is difficult,and in general,there has been no general automated synthesis procedure. Therefore,a number of automated synthesis procedures of analog electronic circuits have been proposed. Koza et al. proposed an automated synthesis procedure using genetic programming. The automated synthesis procedure can automatically create parameterized topologies of the desired analog circuit. However,this synthesis procedure uses an infinite number of devices,and therefore the scale of the generated circuits is very large in many cases. In a real design process,only the finite number device can be used. The generated circuit is required to have stability and reproducibility. In this paper,we propose a novel automated synthesis procedure for analog circuits by means of a genetic programming. A novel analog circuit topology can be emerged by our proposed design procedure. In our proposed design procedure,the circuit is represented by a netlist which uses the circuit simulator SPICE. The SPICE netlist can be regarded as a program. Therefore,if we can make an appropriate program,an analog circuit can be designed. In order to create an appropiate program,genetic programming method is proposed. By using the genetic programming,we will propose an automated circuit design procedure for an analog circuit. In this paper,we will show two experiments results that our system generates a low-pass filter circuit and high-pass filter circuit.
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