Patent ID: 7654126

Claim:
A method for establishing a correlation between a first state of a piezoelectric component having a piezoceramic element and a second state of the component, the second state of the component being generated from the first state of the component by polarization of the piezoceramic element of the component, with the following method steps: a) providing a group of components in a first state prior to being polarized; b) measuring at least one first parameter of each of the components of the group in the first state; c) polarizing the piezoceramic element of the components of the group such that the components are in a second, polarized state; d) measuring a second parameter of each of the components of the group in the second, polarized state, the second parameter being different than the at least one first parameter; e) establishing a correlation between the at least one first parameter and the second parameter by comparing the measurements of the at least one first parameter for the group of components in the first state with the measurements of the second parameter for the group of components in the second, polarized state; and f) determining whether to accept or reject a particular component based at least on a measurement of the at least one first parameter of the particular component in the first, pre-polarization state and the established correlation.