초록 ▼

A control system for temperature compensating a piezoelectric device. The control system includes a temperature compensating circuit that is operable to receive a control signal corresponding to a desired position of the piezoelectric device and compensate the control signal in response to an estima

A control system for temperature compensating a piezoelectric device. The control system includes a temperature compensating circuit that is operable to receive a control signal corresponding to a desired position of the piezoelectric device and compensate the control signal in response to an estimated temperature proximate the piezoelectric device. A piezoelectric device control circuit is operable to receive the temperature compensated control signal and generate a control signal that is adapted to drive the piezoelectric device to the desired position. The temperature proximate the piezoelectric device may be estimated from an estimated ferroelectric polarization of the piezoelectric device or from a temperature sensor.

대표청구항 ▼

1. An apparatus for temperature compensating a piezoelectric device, comprising:a temperature compensating circuit operable to receive a first control signal corresponding to a desired position of the piezoelectric device and generate a second control signal in response to the first control signal t

1. An apparatus for temperature compensating a piezoelectric device, comprising:a temperature compensating circuit operable to receive a first control signal corresponding to a desired position of the piezoelectric device and generate a second control signal in response to the first control signal that is compensated in response to an estimated temperature proximate the piezoelectric device; a piezoelectric device control circuit coupled to said temperature compensating circuit and operable to receive the second control signal and generate a third control signal in response to the second control signal that is adapted to drive the piezoelectric device to the desired position, wherein said temperature compensating circuit includes a first data structure operable to correlate the first control signal with the estimated temperature proximate the piezoelectric device to generate the second control signal, and wherein said temperature compensating circuit further includes a polarization estimating circuit coupled to said piezoelectric device control circuit and operable to estimate ferroelectric polarization of the piezoelectric device.