Non-symmetrical semi-active vibration control based on synchronized switching damping

Ji Hongli, Qiu Jinhao, Zhang Jin, Nie Hong, Li Cheng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


An unsymmetrical switch circuit is designed for semi-active control method based on syn-chronized switching damping principle of piezoelectric actuators. A bypass capacitor and an additional switch are used to realize unsymmetrical bipolar voltage. The control logic of the switches is introduced in detail and the switched voltages, which directly influence the control performance, are derived as functions of the vibration amplitude and the outputs of the voltage sources. Experiments were carried out to verify the designed circuit and the theoretical results of the switched voltage. For simplification of experimental conditions the beam is fully clamped and the voltage is fully generated by the voltage source. The influence of the voltage source and bypass capacitor on the actuator was investigated. Experimental results show that the circuit leakage is a critical factor to the amplification of actuator voltage. The voltage ratio increases with increasing bypass capacitance, but its increasing rate decreases.
Original languageEnglish
Title of host publication21st International Congress on Sound and Vibration 2014, ICSV 2014
PublisherInternational Institute of Acoustics and Vibrations
Number of pages8
ISBN (Electronic)9781634392389
Publication statusPublished - 1 Jan 2014
Event21st International Congress on Sound and Vibration 2014, ICSV 2014 - Beijing, China
Duration: 13 Jul 201417 Jul 2014


Conference21st International Congress on Sound and Vibration 2014, ICSV 2014

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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