Redundant active vibration and noise control systems and methods
First Claim
1. An active vibration control system (AVCS), the system comprising:
- at least two digital bus communication lines;
a plurality of sensors in electronic communication with each of the at least two digital bus communications lines;
at least two circular force generators (CFG), each of the at least two CFGs having at least one motor, at least two imbalance masses and at least two microprocessors therein, wherein each of the at least two microprocessors of each CFG is in electronic communication with each of the at least two digital bus communication lines and each of the at least two microprocessors of each CFG are in electronic communication with each of the plurality of sensors and the microprocessors of all the other CFGs, wherein the at least two CFGS are in a distributed architecture;
wherein at least a first microprocessor within each CFG is configured to process redundant information communicated from the at least two digital bus communication lines and the other microprocessors with the same CFG, and each of the microprocessors within each CFG monitor each of the other microprocessors within the same CFG for errors, faults, or failures in vibration control; and
wherein any one of the microprocessors in each CFG is configured to control the at least one motor thereby producing a force that substantially cancels an unwanted vibration force detected by the plurality of sensors.
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Accused Products
Abstract
Redundant active vibration and noise control systems and methods are provided, which include safety-critical systems and methods. In one embodiment, a safety-critical active vibration control system (SCAVCS) is provided, which includes a plurality of digital buses, a force generator, at least one sensor and at least one system parameter. The at least one force generator is in electronic communication with at least two digital buses. The force generator includes a pair of unbalanced masses, at least one motor, at least one microprocessor, at least one speed sensor, at least one accelerometer, and at least one power input. The at least one sensor is in electronic communication with each of the digital buses and with each of the microprocessors. The at least one system parameter is in electronic communication with each of the digital buses and each of the microprocessors.
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Citations
17 Claims
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1. An active vibration control system (AVCS), the system comprising:
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at least two digital bus communication lines; a plurality of sensors in electronic communication with each of the at least two digital bus communications lines; at least two circular force generators (CFG), each of the at least two CFGs having at least one motor, at least two imbalance masses and at least two microprocessors therein, wherein each of the at least two microprocessors of each CFG is in electronic communication with each of the at least two digital bus communication lines and each of the at least two microprocessors of each CFG are in electronic communication with each of the plurality of sensors and the microprocessors of all the other CFGs, wherein the at least two CFGS are in a distributed architecture; wherein at least a first microprocessor within each CFG is configured to process redundant information communicated from the at least two digital bus communication lines and the other microprocessors with the same CFG, and each of the microprocessors within each CFG monitor each of the other microprocessors within the same CFG for errors, faults, or failures in vibration control; and wherein any one of the microprocessors in each CFG is configured to control the at least one motor thereby producing a force that substantially cancels an unwanted vibration force detected by the plurality of sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of providing a redundant active vibration control system (AVCS), the method comprising:
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providing at least two of digital bus communication lines; providing a plurality of sensors, wherein each of the plurality of sensors is in electronic communication with each of the at least two digital bus communications lines; electronically connecting each of at least two circular force generators (CFG) to each of the digital bus communication lines for facilitating electronic communication therewith, wherein each of the at least two CFGs has at least one motor, at least two imbalance masses and at least two microprocessors therein, wherein each of the at least two microprocessors within each CFG is configured to receive and send communications from and to each of the at least two digital bus communications lines; processing redundant information electronically communicated from each of the at least two digital bus communication lines in one of the at least two microprocessors within each CFG; processing the same microprocessor receiving redundant information from each of the at least two digital bus communication lines redundant information communicated from the other microprocessors within the same CFG to the one microprocessor; monitoring each of the at least two microprocessors, wherein each of the at least two microprocessors in each CFG monitor the other microprocessors within the same CFG for errors, faults, or failures in vibration control; generating a force that substantially cancels an unwanted noise or vibration force detected by the plurality of sensors, wherein at least one of the microprocessors in each of the CFGs controls the at least one motor that generates the force. - View Dependent Claims (15, 16, 17)
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Specification