虛擬儀器技術的RLC測試儀

針對傳統RLC測試儀體積大、成本高等問題,運用虛擬儀器技術,根據伏安法測量
原理和相關分析測量算法,以虛擬儀器集成開發環境LabV IEW為平臺,設計了RLC測試儀的硬件和軟件部分。測試結果表明,電阻、電感和電容的基本測量范圍分別為0. 001 ～1 000 kΩ、0. 010～50 mH和0101～470μF,測量誤差的絕對值分別為δ≤115%、δ≤5%和δ≤5% ,滿足測量精度要求。該測試儀不僅研制成本低、效率高,而且設計靈活、人機交互界面友好,具有較高的實用價值。

A imed at overcom ing the disadvantage of large volume and high cost of the traditional RLC parameters tester, this paper introduces the design of the hardware and the software of the RLC parameters tester by using the virtual instrument technology, based on the voltammetry measuring princip le and correlative analysis measuring algorithm and the p latform of the LabV IEW software.
The test results show that the fundamentalmeasurement ranges of the resistance (R) , the inductance (L) and the capacitance (C) are 0. 001～1 000 kΩ , 0. 010～50 mH and 0. 01～470μF respectively and the absolute values of the measurement errors areδ≤1. 5% , δ≤5% andδ≤5%. It follows that the requirements of the measurement accuracy are fulfilled. The advantages of lower cost,
higher efficiency, more flexible design and friendly Human2Machine Interface (HM I) give the instrument a higher app lication value.