Equivalent circuit of piezoelectric resonant disk gyroscope through admittance circle method

Micro & nano letters

article

Bin Ou¹  Weiping Zhang¹  Jian Tang¹  Dianjun Sun¹  Yaliang Xing¹  Dong Fang¹  Feng Cui¹ 

[1] National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University;Key Laboratory for Thin Film and Micro Fabrication of the Ministry of Education and Shanghai Key Lab of Navigation and Location-based Services, Shanghai Jiao Tong University;Department of Micro-Nano Electronics, Shanghai Jiao Tong University;School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University

关键词: equivalent circuits;    piezoelectric devices;    gyroscopes;    electric admittance measurement;    equivalent circuit;    piezoelectric resonant disk gyroscope;    admittance circle method;    actual admittance circle;    Van Dyke model;    parallel resistance;    relative error;    energy dissipation;   

DOI  :  10.1049/mnl.2016.0413

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Citation: Samanta S, Samanta S, Soni KD and Aggarwal R. ‘Lignocaine stylet’: Tips fordifficult arterial cannulation with minimum arterial spasm. Anaesth Pain & Inensive Care 2014;18(3):314-15 Commonly used methods for arterial cannulation are over the guide wire or over the needle technique.1 First attempt is the best attempt in arterial cannulation. In many conditions, it is not possible to cannulate artery in first attempt. Puncture site hematoma, spasm of artery result in disappearance of pulse and it creates difficulty in immediate further attempts. We describe a simple technique to overcome the difficulty related to repeated attempts in arterial cannulation. We attempted radial artery cannulation in left hand with 20G cannula (BD VenflonTM Pro IV Cannula, Becton Dickinson, Helsingborg, Sweden) in a patient with pancreatitis. First attempt was unsuccessful in negotiating the cannula into the artery. With repeated attempts radial artery went into spasm and pulse disappeared. Before trying to another artery we applied a simple modification to the technique in the same artery. We punctured the artery with a new cannula after distal white stopper removal (Figure 1) at the previous puncture point.

【 授权许可】

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