Vibration system
AssigneesNidec Corporation, Nidec Seimitsu Corporation
InventorTetsufumi HAYASHI
Life of this patent
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Abstract
A vibration system includes a linear vibration motor, and a controller that controls a drive current waveform of the vibration motor. The drive current waveform includes consecutively arranged large unit waves having the same waveforms side by side on a time axis. Each large unit wave includes a first region having a waveform with a smaller amplitude in one period, which is a width of the large unit wave on the time axis, and a second region having a waveform with a larger amplitude than the amplitude in the first region. The first region and the second region alternatively appear on the time axis.
Claims15
A vibration system comprising:
- a linear vibration motor;
- and
- a controller that controls a drive current waveform of the vibration motor;
- wherein
- the drive current waveform includes consecutively arranged large unit waves having a same waveforms side by side on a time axis;
- the large unit wave includes a first region having a waveform with a smaller amplitude in one period, which is a width of the large unit wave on the time axis, and a second region having a waveform with a larger amplitude than the amplitude in the first region;
- and
- the first region and the second region alternatively appear on the time axis.
Dependencies are inferred from the claim text.