Hydraulic damping apparatus
First Claim
1. A hydraulic damping apparatus comprising:
- a conduit for a hydraulic fluid having a port in a wall of the conduit;
a resonator having a chamber and a neck, the neck being arranged to provide fluid communication between the chamber and the port;
a first pressure sensor arranged to sense pressure in the conduit upstream of the port;
a second pressure sensor arranged to sense pressure in the conduit downstream of the port; and
a controller configured to determine the amplitude of a pressure fluctuation sensed by the first pressure sensor and the amplitude of a pressure fluctuation sensed by the second pressure sensor, the controller being further configured to vary a resonant frequency of the resonator in accordance with a difference between the amplitude of the pressure fluctuation sensed by the first pressure sensor and the amplitude of the pressure fluctuation sensed by the second pressure sensor.
1 Assignment
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Accused Products
Abstract
A hydraulic damping apparatus comprising a conduit for a hydraulic fluid having a port in a wall of the conduit; a resonator having a chamber and a neck, the neck being arranged to provide fluid communication between the chamber and the port. The apparatus further comprises a first pressure sensor arranged to sense pressure in the conduit upstream of the port, a second pressure sensor arranged to sense pressure in the conduit downstream of the port, and a controller configured to determine the amplitude of a pressure fluctuation sensed by the first pressure sensor and the amplitude of a pressure fluctuation sensed by the second pressure sensor. The controller is further configured to vary a resonant frequency of the resonator in accordance with a difference between the amplitude of the pressure fluctuation sensed by the first pressure sensor and the amplitude of the pressure fluctuation sensed by the second pressure sensor.
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Citations
15 Claims
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1. A hydraulic damping apparatus comprising:
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a conduit for a hydraulic fluid having a port in a wall of the conduit; a resonator having a chamber and a neck, the neck being arranged to provide fluid communication between the chamber and the port; a first pressure sensor arranged to sense pressure in the conduit upstream of the port; a second pressure sensor arranged to sense pressure in the conduit downstream of the port; and a controller configured to determine the amplitude of a pressure fluctuation sensed by the first pressure sensor and the amplitude of a pressure fluctuation sensed by the second pressure sensor, the controller being further configured to vary a resonant frequency of the resonator in accordance with a difference between the amplitude of the pressure fluctuation sensed by the first pressure sensor and the amplitude of the pressure fluctuation sensed by the second pressure sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification