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US 2019/0056485 A1Published application
Short range ultrasonic measurement
AssigneeHamilton Sundstrand Corporation
InventorWilliam E. Rhoden
Life of this patent
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Abstract
A system has an actuator with a first surface and a second surface, the first surface being offset a step dimension from the second surface. A sensor is configured to measure a distance between the sensor and both the first surface and the second surface via a signal received by the sensor after having reflected off the first surface or the second surface. The step dimension is greater than a minimum dimension, which is defined in view of a medium through which the actuator moves and a frequency of the signal.
Claims20
A system comprising:
- an actuator having a first surface and a second surface, the first surface being offset a step dimension from the second surface;
- and
- a sensor configured to measure a distance between the sensor and both the first surface and the second surface via a signal received by the sensor after having reflected off the first surface or the second surface, wherein the step dimension is greater than a minimum dimension, the minimum dimension being defined in view of a medium through which said actuator moves and a frequency of the signal.
A method of operating a system comprising the steps of:
- moving an actuator having a first surface and a second surface, the first surface offset from the second surface by a step dimension;
- sensing a distance between a sensor and both the first surface and the second surface via a signal received by the sensor after having reflected off the first surface or the second surface, wherein the step dimension is greater than a minimum dimension, the minimum dimension being defined in view of a medium through which said actuator moves and a frequency of the signal.
A system comprising:
- a moving actuator;
- a sensor for sensing a distance to a surface on said moving actuator, said sensor being operable to utilize said distance as position feedback for a component being moved by said actuator;
- and
- the surface being spaced from said sensor by a distance that is greater than a minimum distance in an end-of-travel position, said minimum distance being defined in view of a medium through which said moving actuator moves and a frequency of a signal from said sensor.
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Dependencies are inferred from the claim text.