Title :
Fast and portable precision impedance analyzer for application in vibration damping
Author :
Necasek, Jakub ; Vaclavik, Jan ; Marton, Pavel
Author_Institution :
Inst. of Mechatron. & Comput. Eng., Tech. Univ. of Liberec, Liberec, Czech Republic
Abstract :
Design and construction of a fast and accurate low-frequency impedance analyzer is presented. Main application of the device is in semi-active noise and vibration damping with piezoceramic actuators in the frequency range from 50 Hz to 5 kHz. Constructed device presented here is based on an ARM microcontroller as a control and communication unit and analog part for synchronous voltage and current detection with the auto-balancing bridge sensing method. To comply with requirements on very short duration of the measuring process, frequency-limited-noise driving signal is utilized. Performance of the device was tested on several model circuits and verified with measurements on commercial impedance analyzer Agilent 4294A.
Keywords :
damping; electric impedance measurement; microcontrollers; performance evaluation; piezoceramics; piezoelectric actuators; signal processing; vibrations; ARM microcontroller; auto-balancing bridge sensing method; commercial impedance analyzer Agilent 4294A; communication unit; device performance testing; frequency 50 Hz to 5 kHz; frequency-limited-noise driving signal; low-frequency impedance analyzer; piezoceramic actuators; precision impedance analyzer; semiactive noise; synchronous current detection; synchronous voltage detection; vibration damping; Actuators; Damping; Frequency measurement; Impedance; Impedance measurement; Noise; Sensors; ARM; Impedance analyzer; Vibration damping;
Conference_Titel :
Electronics, Control, Measurement, Signals and their Application to Mechatronics (ECMSM), 2015 IEEE International Workshop of
Conference_Location :
Liberec
Print_ISBN :
978-1-4799-6970-8
DOI :
10.1109/ECMSM.2015.7208693
