Actuator including mechanism for converting rotary motion to linear motion
AssigneeBose Corporation
InventorsJohn J. Breen, Mark A. Hayner
Life of this patent
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Abstract
An active vibration control device is provided that is configured to control the position of a body relative to a reference frame. The control device includes sensors that provide input signals corresponding to movement of the body in at least one direction, a rotary motor configured to control the position of the body, and four-bar linkage connecting the rotary motor to the body. The linkage converts the rotary motion output from the motor into a linear motion of the body. The controller, based on the input signals from the reference frame sensors, provides control signals to the rotary motor which acts through the linkage to position the body in the at least one direction relative to the position of the reference frame.
Claims16
An active vibration control device configured to control the position of a body, the device comprising:
- at least one sensor configured to provide input signals corresponding to movement of the body in at least one direction;
- a rotary motor configured to control the position of the body, and
- a linkage comprising at least two pivotably-joined links connecting the rotary motor to the body, the linkage connected to and driven by the rotary motor, the linkage configured to convert rotary motion output from the motor into a linear motion of the body,
- a controller which, based on the input signals from the at least one sensor, provides control signals to the rotary motor which acts through the linkage to position the body in the at least one direction.
An active vibration control device configured to control the position of a body, the device comprising:
- at least one sensor configured to provide input signals corresponding to movement of the body in at least one direction;
- a rotary motor configured to control the position of the body, and
- a linkage comprising at least two pivotably-joined links connecting the rotary motor to the body, the linkage configured to convert rotary motion output from the motor into a linear motion of the body,
- a controller which, based on the input signals from the at least one sensor, provides control signals to the rotary motor which acts through the linkage to position the body in the at least one direction, wherein;
- the body comprises a vehicle seat, the seat is disposed in a vehicle, and the motor is disposed between a floor in the vehicle and the seat.
Dependencies are inferred from the claim text.