Resonant shaking
AssigneeBose Corporation
InventorRicardo F. Carreras
Life of this patent
Estimating the term…
Abstract
A resonant shaker includes a support tray for supporting a target carrier. A sensor generates an electrical signal that is related to an acceleration of the support tray. A linear drive motor includes an armature that is coupled to the support tray. The linear drive motor provides an oscillating drive force to the support tray in response to a drive current applied to the linear drive motor. The resonant shaker also includes a controller. The controller receives the electrical signal from the sensor and a drive signal that is related to the drive current. The controller transmits a modified drive current to the linear drive motor in response to a predetermined phase relationship between the electrical signal and the drive signal.
Claims46
A resonant shaker comprising:
- a support tray for supporting a target carrier;
- a sensor that generates an electrical signal that is related to an acceleration of the support tray;
- a linear drive motor comprising an armature that is coupled to the support tray, the linear drive motor providing an oscillating drive force to the support tray in response to a drive current applied to the linear drive motor;
- and
- a controller that receives both the electrical signal and a drive signal that is related to the drive current, the controller transmitting a modified drive current to the linear drive motor in response to a predetermined phase relationship between the electrical signal and the drive signal.
A method of shaking using a resonant shaker, the method comprising:
- oscillating a support tray of the resonant shaker with a linear drive motor that is driven by a drive current;
- generating a drive signal that is related to the drive current;
- generating an electrical signal that is related to an acceleration of the support tray;
- modifying the drive current in response to a predetermined phase relationship between the electrical signal and the drive signal to generate a modified drive current;
- and
- driving the linear drive motor with the modified drive current to oscillate the support tray.
A resonant shaker comprising:
- a support tray for supporting a target carrier;
- a linear drive motor comprising an armature that is coupled to the support tray, the linear drive motor providing an oscillating drive force to the support tray in response to a drive current applied to the linear drive motor;
- and
- a controller that is electrically coupled to the linear drive motor, the controller receiving a signal that is indicative of a measured parameter of the linear drive motor, the controller transmitting a modified drive current to the linear drive motor in response to the signal.
A resonant shaker comprising:
- means for oscillating a support tray with a linear drive motor that is driven by a drive current;
- means for generating a drive signal that is related to the drive current;
- means for generating an electrical signal that is related to an acceleration of the support tray;
- means for modifying the drive current in response to a predetermined phase relationship between the electrical signal and the drive signal to generate a modified drive current;
- and
- means for driving the linear drive motor with the modified drive current to oscillate the support tray.
Dependencies are inferred from the claim text.