Self-Powered and Low-Power Piezoelectric Vibration Control Using Nonlinear Approaches

摘要: The constant proliferation of embedded systems as well miniaturized devices has raised the issue efficiently limiting vibrations and/or providing precise positioning using a very few amount energy. A typical application example is damping vibrating electronic cards, in order to limit risk microcracks conductive tracks. Because integration constraints these systems, use viscoelastic materials (i.e., direct dissipation mechanical energy into heat (Johnson, 1995)) not applicable. Hence, conversion media mandatory this case. In particular, piezoelectric are good candidates for control devices, thanks their high power densities and potentials (Veley & Rao, 1996). It should be also noted that elements allows achieving various functions, such actuation, sensing harvesting (Inman, Ahmadian Claus, 2001; Qiu Haraguchi, 2006; Guyomar et al., 2007a; Lallart 2008a), making them attractive integrated systems. However, standard active schemes prohibited when dealing with requirements necessitate bulky amplifiers (Gerhold, 1989). Such need full feedback loop well, including sensors (although some can transducer itself sensor (Qiu 2006)) microcontrollers may easily integrated. addition, passive featuring electroactive shunted (Lesieutre, 1998)) quite complex, required components usually difficult implement, especially case actuators where inductance an efficient large (several Henrys), necessitating synthetic have externally powered (Fleming Moheimani, 2003). These techniques limited performance sensitivity frequency drifts caused by temperature variations or ageing, implementation several modes complex (Wu, 1998). combination been proposed combine advantages while drawbacks. it shown applying nonlinear methods lead significant abilities (Clark, 2000; Davis Lesieutre, Cunefare, 2002; Holdhusen 2003; Wickramasinghe 2004; Nitzsche 2005; Makihara, Onoda Minesugi, 2007). nature approaches often realistic application,