A wide range, fast balance technique for digital AC bridges is proposed in this paper. We introduce a novel method that can give the balance parameters of a digital AC bridge in a closed form. Unlike the traditional heuristic methods used to balance AC bridges, the proposed method only needs to arbitrarily change one adjustable parameter two times including the setting of original values. The balance parameters can then be computed using two closed-form formulas. Finally, the applicability of the proposed theory is discussed, and simulation examples are given and analyzed. Our algorithm is noniterative and precise and offers clear benefits for real-world applications.
['Jian Qiu Zhang', 'Seppo J. Ovaska', 'Zhao Xinmin']
A novel fast balance technique for the digital AC bridge