| 摘要 |
The synchronisation control, for vibrators with oscillating masses, uses an adjustable quartz generator (10) connected to one input of two frequency comparators (PLL1, PLL2) each associated with one of the vibrator drives (30,300). The second input of each comparator (PLL1, PLL2) is fed with pulses from a respective pulse generator (40,41). The outputs of the comparators (PLL1, PLL2) are fed to regulating loops (20,21) for the respective drive for reducing the velocity difference between the drives. Pref. the outputs of the two pulse generators (40,41) are fed to a phase comparator (PLL3), which supplies an output added to that of one of the former two comparators (PLL2) fed to one of the regulating loops (21). The synchronisation control is independent of temp. variations. |
