基于FPAA芯片的LVDT解调电路的研制

2023 20th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON) Pub Date : 2023-05-09 DOI:10.1109/ECTI-CON58255.2023.10153207

K. Angkeaw, Surachai Chanchay, P. Thongdit

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引用次数: 0

摘要

提出了一种基于现场可编程模拟阵列的LVDT解调电路。该电路采用比值矩阵法，采用单个CMOS现场可编程模拟阵列(FPAA)器件。它由求和放大器、分频电路和低通滤波器组成。通过使用AnadigmDesigner®2提供的FPAA AN231E04的可配置模拟模块(CAMs)来实现解调器电路的功能元件。因此，2.5 kHz时-2.43和+2.3之间的直流(DC)电压与位移-3 mm成正比，直到输出+2.8 mm。结果表明，位移传感器的非线性误差为γ = 0.27%。

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A Development of LVDT Demodulator Circuit Based on FPAA Chip

This paper presents a demodulator circuit for LVDT based on the field programmable analog array implemented. The proposed circuit uses the ratio matrix method and employs a single CMOS Field Programmable Analog Array (FPAA) device. It consists of a summing amplifier, divider circuit, and lowpass filter. The demodulator circuit’s functional elements are realized by employing the available Configurable Analogue Modules (CAMs) of the FPAA AN231E04 from AnadigmDesigner®2. Thus, direct current (DC) voltage between -2.43 and +2.3 at 2.5 kHz is proportional to displacement -3 mm until +2.8 mm is outputted. Results show that displacement sensor nonlinear error is γ = 0.27%.

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来源期刊

2023 20th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)

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