Panel with self-tuning shunted piezoelectric patches for broadband flexural vibration control

Tuning and performance comparison of multiresonant piezoelectric shunts

“…A number of other topologies were proposed since then, such as the current blocking shunt (Agneni et al, 2006;Wu, 1998), the current flowing shunt (Behrens et al, 2003), the seriesparallel impedance structure (Fleming et al, 2003), and a Cauer-type network (Goldstein, 2011). Each of these circuits proved rather difficult to tune, and numerical optimization was often needed for circuits with known (Cigada et al, 2012;Fleming et al, 2002;Gardonio et al, 2019) or unknown (Berardengo et al, 2017;Dal Bo et al, 2022) topology. The latter approach either requires a further step to synthesize the circuit afterward or requires the analysis of multiple architectures, but has the potential advantage of allowing for more optimal solutions than the former since it is less restrictive.…”

Design tool for elementary shunts connected to piezoelectric patches set to control multi-resonant flexural vibrations

“…Also, the electrical components of the shunts can be varied with simple electrical circuits so that the electro-mechanical TVA can be suitably adapted online to control the resonant response of a target flexural natural mode of the structure [40][41][42][43][44]. Moreover, multi-resonant shunts can be employed such that each patch can be used to generate multiple TVAs effects, which are set to control the resonant responses of multiple flexural natural modes of the hosting structure over a wide frequency band [40,[45][46][47][48][49][50]. The most common multiresonant shunt configuration proposed in the literature is based on multiple RLC-branches circuits.…”

Passive control of multiple structural resonances with piezoelectric vibration absorbers

“…Some of these works proposed associated tuning formulae for the electrical parameters, but these problems were shown to be rather complex due to the interaction between the different resonant branches, and numerical optimization was often called upon to tune these parameters [14][15][16][17][18]. Although numerical optimization is a powerful tool and could even be used for real-time tuning of shunts [19], it is a time-consuming process whose outcome may be a local optimum. To address this, a sequential tuning procedure based on effective characteristics associated with electrical resonances was proposed in [20].…”