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This paper investigates the feasibility and control performance of a single channel velocity feedback loop located at the centre of a rectangular panel. The feedback control system is made by either a composite hexagonal or a circular piezoelectric patch with, at its centre, an accelerometer sensor. The hexagonal patch is formed by six triangular piezoelectric leafs, each with the principal axis aligned along the lateral edge of the hexagon and the radial direction. Thus the hexagonal piezoelectric patch can be regarded as a composite active transducer that produces a net transverse force at its centre, which is balanced by transverse forces at the six vertices of the hexagon, and bending moments along the six edges of the hexagon. The circular patch is made of an homogeneous piezoelectric material with principal axis oriented in tangential and radial directions so that a uniform distribution of bending moments oriented in radial direction is produced along the perimeter of the patch together with a point transverse force at the centre position, which is balanced by a uniform transverse force along the perimeter of the patch. When a velocity feedback loop is implemented these sensor–actuator configuration show improved stability properties in comparison with the standard configuration that uses a square piezoelectric patch actuator. Also, the two feedback loopz produces a transverse sky–hook active damping action localised at the centre of the panel, which effectively absorbs flexural energy and thus reduce the broad-band flexural response and sound radiation of the panel at low audio frequencies.