The Automated Complex Impedance Measurement System
The design of automated, low cost, complex impedance measurement system is described. The overview of impedance measurement methods is given and suitable candidates outlined. The I–V method and the auto–balancing bridge method have been selected and the system structure has been adopted for those two methods. The preliminary investigation results for both methods are presented. The parallel RC circuit and transducer BVD electrical model have been used as test impedance. The measurement results are plotted against theoretical impedance value. The piezoactuator impedance variation versus load was measured as demonstration of system monitoring capabilities. Ill.9, bibl.12 (in English; summaries in English, Russian and Lithuanian).
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