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Dual function system having a piezoelectric element

  • US 5,347,870 A
  • Filed: 11/22/1993
  • Issued: 09/20/1994
  • Est. Priority Date: 01/29/1992
  • Status: Expired due to Fees
First Claim
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1. A dual function system for producing a mechanical effect on a body and sensing a response thereto which comprises a piezoelectrically responsive element which both produces and senses mechanical effects, means for applying a first signal to said element for actuating said element to produce the mechanical effect on the body and for obtaining from said body via element piezoelectrically a second signal, and means for processing by additively combining said first and second signals for providing an output signal, said output signal representing the response of said element to said effect while said first signal is being applied.

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