Phase-locked loop with controlled phase slippage

Patent · 29 March 1994

OSTI ID:5074790

Mestha, L K

A system for synchronizing a first subsystem controlled by a changing frequency sweeping from a first frequency to a second frequency, with a second subsystem operating at a steady state second frequency is described. Trip plan parameters are calculated in advance to determine the phase relationship between the frequencies of the first subsystem and second subsystem in order to obtain synchronism at the end of the frequency sweep of the first subsystem. During the time in which the frequency of the first subsystem is sweeping from the first frequency to the second frequency, the phase locked system compares the actual phase difference with the trip plan phase difference and incrementally changes the sweep frequency in a manner so that phase lock is achieved when the first subsystem reaches a frequency substantially identical to that of the second subsystem. 10 figures.

• DOE Contract Number: AC35-89ER40486
• Assignee: Universities Research Association, Inc., Washington, DC (United States)
• Patent Number(s): A; US 5298867
• Application Number: PPN: US 7-807144
• OSTI ID: 5074790
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426000* -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
ELECTRONIC EQUIPMENT
EQUIPMENT
FREQUENCY MEASUREMENT
OPERATION
STEADY-STATE CONDITIONS
SYNCHRONIZATION