초록 ▼

A rotating body, through appropriate pickup devices, generates one pulse for each rotation. The pulses are delivered to a phase locked loop which generates 2n pulses for each input pulse and selects every 2nth pulse for comparison with the generated pulse. The 2n pulses are counted in a multistage b

A rotating body, through appropriate pickup devices, generates one pulse for each rotation. The pulses are delivered to a phase locked loop which generates 2n pulses for each input pulse and selects every 2nth pulse for comparison with the generated pulse. The 2n pulses are counted in a multistage binary counter having n outputs to deliver a sequence of ordered binary-coded signals comprising a digital representation of the instantaneous angular position of the rotating body. In a further embodiment of the invention, the digital representation of the angular position of the rotating body is converted through read-only-memory (ROM) units and digital-to-analog converters into rectangular coordinate representations of the instantaneous angular position of the rotating body. With suitable multipliers, that rectangular coordinate representation can be combined with an instantaneous vibration manifestation signal derived from the rotating body to generate quadrature signals which uniquely identify the amount and location of instantaneous vibration manifestation of the rotating body.

대표청구항 ▼

A method for generating a sinusoidal electrical reference signal corresponding to the instantaneous angular position of a rotating body which comprises: generating one or more uniformly spaced electrical original pulses for each rotation of the said rotating body; generating an electrical pulsed sig

A method for generating a sinusoidal electrical reference signal corresponding to the instantaneous angular position of a rotating body which comprises: generating one or more uniformly spaced electrical original pulses for each rotation of the said rotating body; generating an electrical pulsed signal having 2n uniformly spaced pulses between each of said original pulses; counting the pulses of said uniformly spaced pulses in a binary code signal counter which uniquely represents 2n angular positions of the said rotating body; then converting the said binary code signal in a sine function read only memory device to a digital representation of a sine function which corresponds to the instantaneous angular position of the said rotating body; and then filtering the digital representation of the sine function to a corresponding analog representation of the same sine function which is synchronized with the instantaneous angular position of the said rotating body.