Patent ID: 7069172
Filing Date: 2006-06-27
Classification: G01P

Abstract:
1. A system for generating test signal pulses used in determining speed of a rotating device, wherein the rotating device is operable to generate a device signal indicative of the current speed of the rotating device, the system comprising: a first circuit operable to receive a first coefficient value corresponding to a maximum frequency of the test signal pulses and further operable to provide a scaled base frequency signal based on the first coefficient value; a second circuit operable to receive the scaled base frequency signal and a second coefficient value and further operable to generate the test signal pulses based on the scaled base frequency signal and the second coefficient value; wherein the scaled base frequency is commensurate with the maximum frequency of the test signal pulses; wherein a current frequency of the test signal pulses is proportional to a current frequency of the device signal; and wherein the test signal pulses operate to provide power to the rotating device.