Rotary wing aircraft vibration control system with resonant inertial actuators
First Claim
1. A method of operating a vibration control system of a rotary wing aircraft for counteracting vibrations in a vibrating structure of the aircraft comprising:
- monitoring a current and a voltage through a resonant inertial actuator over at least a portion of an interval of time;
monitoring a vibration frequency of the vibrating structure of the rotary wing aircraft;
transforming the monitored current and voltage in a time domain in reference to the vibration frequency in quadrature into complex current and voltage values in a frequency domain over at least a portion of the time interval;
incorporating the complex current and voltage values into a calculation of a value of an operating parameter of the resonant inertial actuator;
comparing the calculated value of the operating parameter against a threshold relating to a desired range of operation for the resonant inertial actuator; and
limiting a command output of the resonant inertial actuator to maintain the value of the operating parameter within the desired range.
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Accused Products
Abstract
A control system for resonant inertial actuators estimates operating parameters of the resonant inertial actuators based on voltage and current feedback and dynamically limits selected parameters to maintain the safe, efficient, and cost effective operation of the resonant inertial actuators. Resistance within the electrical drives for the resonant inertial actuators is estimated from the voltage and current feedback and in conjunction with the modeling of the resonant inertial actuators other operating parameters are calculated or otherwise estimated. Having regard for the responsiveness of the resonant inertial actuators to changes in command signals, the command signals are adjusted to dynamically limit the estimated parameters.
63 Citations
9 Claims
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1. A method of operating a vibration control system of a rotary wing aircraft for counteracting vibrations in a vibrating structure of the aircraft comprising:
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monitoring a current and a voltage through a resonant inertial actuator over at least a portion of an interval of time; monitoring a vibration frequency of the vibrating structure of the rotary wing aircraft; transforming the monitored current and voltage in a time domain in reference to the vibration frequency in quadrature into complex current and voltage values in a frequency domain over at least a portion of the time interval; incorporating the complex current and voltage values into a calculation of a value of an operating parameter of the resonant inertial actuator; comparing the calculated value of the operating parameter against a threshold relating to a desired range of operation for the resonant inertial actuator; and limiting a command output of the resonant inertial actuator to maintain the value of the operating parameter within the desired range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification