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为了解决软件实现的模糊控制器速度低的问题,研制了模拟电路实现的模糊控制器。设计了以下单元电路:结构精简的新型Z型、Gauss型和S型隶属度函数电路、电流模求小电路和一种不需要除法器的重心法去模糊电路。以此构造的两输入一输出9条规则的零阶TS模糊控制器已在无锡上华0.6μm CMOS工艺下制造。测试结果表明:在±2.5V的工作电压下精度为±3.5%,功耗仅为3.5mW,模糊推理的速度是0.67×106s-1。该控制器在功耗、精度和面积上有优势,可用于实时控制。
In order to solve the problem of low speed of fuzzy controller realized by software, a fuzzy controller realized by analog circuit is developed. The following unit circuits are designed: a new compact Z-type, Gauss-type and S-type membership function circuits, a small current mode circuit and a centroid de-blurring circuit without the need of a divider. The two-input-one-output zero-order TS fuzzy controller with this structure has been manufactured in Wuxi Shanghua 0.6μm CMOS process. The test results show that the accuracy is ± 3.5% at the operating voltage of ± 2.5V, the power consumption is only 3.5mW, and the speed of fuzzy inference is 0.67 × 106s-1. The controller has advantages in power consumption, accuracy and area and can be used for real-time control.