Fast calibration

1. A computer implemented method of calibrating a device comprising the steps of:

deriving an analytic expression for a variable to be optimised of the device in terms of at least one parameter of the device;

transforming the analytic expression into polynomial form of the at least one parameter of the device, the polynomial form comprising N coefficients;

capturing at least N samples of a value of the variable from the device under calibration, each sample being a result of a different independent pre-determined value of the at least one parameter;

applying the captured variable values and the corresponding at least one parameter values to the polynomial form;

obtaining optimal values of the at least one parameter from the applying step to calibrate the device;

wherein the capturing step is performed in one scan of the parameter values.

2. The method of claim 1 wherein the pre-determined parameter values are derived from a sub-region of the normal operating region of the parameter values of the device to be calibrated.

3. The method of claim 2 wherein the sub-region is based on characteristics and/or a desired performance of the device to be calibrated.

4. The method of claim 1 wherein the number of samples to be captured is more than the number of coefficients in the polynomial expression.

5. The method of claim 1 wherein pre-determined parameter values are chosen so that noise intrinsic to the individual samples is averaged such that the polynomial form provides a curve fit when more than N samples are captured.

6. The method of claim 1 wherein the capturing step comprises:

instructing the device to operate with the at the least one parameter set at a pre-determined value;

capturing a sample of a value of the variable from the device as a result of the instructing step; and

repeating the instructing and capturing steps until N samples have been captured, each sample being a result of a different independent pre-determined value of the at least one parameter.

7. The method of claim 1 wherein the instructing, capturing and repeating steps are performed in one scan of the parameter values.

8. The method of claim 1 wherein the pre-determined values of the at least one parameter provide independent data points.

9. A non-transitory computer readable medium comprising instructions that when executed by a processor cause the processor to carry out the method of claim 1 .

10. A processor arranged to carry out the method of claim 1 .