ASYMMETRIC AND GENERAL VIBRATION WAVEFORMS FROM MULTIPLE SYNCHRONIZED VIBRATION ACTUATORS

Title:

ASYMMETRIC AND GENERAL VIBRATION WAVEFORMS FROM MULTIPLE SYNCHRONIZED VIBRATION ACTUATORS

Document Type and Number:

WIPO Patent Application WO/2012/125924

Kind Code:

A3

Abstract:

The disclosure relates to General Synchronized Vibration devices that provide haptic feedback to a user (FIGS. 87-88) and improve the performance of existing vibratory devices. Different actuator types may be employed to provide synchronized vibration, including linear rotary actuators (1102), rotating eccentric mass actuators (1210) including interleaved rotating mass actuators (1250a, b), and rocking mass actuators (490). A controller (502) sends signals to one or more driver circuits to provide adjustment of vibration magnitude, frequency, and direction of the actuators. The system may apply forces onto an object (1100), and a sensor measures a feature (s) of the object. This information is provided to a vibration device controller (FIG. 58), which can then modify the vibration waveform to improve overall system performance. Fourier synthesis can be used to approximate arbitrarily shaped waveforms by controlling the phase and frequency of vibration actuators. These waveforms can include asymmetry where the peak force in one direction is higher than the peak force in another direction (FIG. 44).

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Inventors:

DELSON NATHAN (US)
HOUSTON JOHN (US)
GRAHAM GABE (US)

Application Number:

PCT/US2012/029440

Publication Date:

January 03, 2013

Filing Date:

March 16, 2012

Export Citation:

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Assignee:

COACTIVE DRIVE CORP (US)
DELSON NATHAN (US)
HOUSTON JOHN (US)
GRAHAM GABE (US)

International Classes:

H02K33/00

Foreign References:

KR20100125941A	2010-12-01
KR20100029158A	2010-03-15
US20060290662A1	2006-12-28
JP2003199974A	2003-07-15
US20020080112A1	2002-06-27

Other References: