Method for determining an imbalance characteristic of an oscillator
AssigneeRolex SA
InventorsRichard Bossart, Marc Cerutti, Frédéric Burger, Olivier Hunziker, Denis Favez
Life of this patent
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Abstract
A method for determining an imbalance characteristic of a hairspring (5) balance (4) oscillator (3) of a timepiece movement (2), the method comprising at least the following steps: —Setting the hairspring balance oscillator in an oscillating motion at at least two amplitudes, —Determining, for each amplitude and for at least two positions of the oscillator, a piece of data representative of the oscillation period of the oscillator, —Using the data from the previous step to calculate the imbalance characteristic of the hairspring balance oscillator.
Claims20
A method for determining, in particular for calculating, an imbalance characteristic of a hairspring-balance oscillator, the method comprising:
- putting the hairspring-balance oscillator into oscillating motion at two amplitudes at least;
- determining for each amplitude and for at least two positions of the oscillator, data which is representative of the period of oscillation of the oscillator;
- using the data from the preceding step in order to calculate the imbalance characteristic of the hairspring-balance oscillator.
A method for regulation of a hairspring-balance oscillator, comprising
- determining for each amplitude and for at least two positions of the oscillator, data which is representative of the period of oscillation of the oscillator, and
- modifying the balance in order to eliminate some or all of this imbalance from the balance.
Dependencies are inferred from the claim text.