초록 ▼

Disclosed is a system and method for minimizing vibration over the full operating range of a rotor of an apparatus. The system includes a transducer or an array of transducers for resolving up to six degrees of freedom of motion of a rotor support structure. In one embodiment the transducer is a six

Disclosed is a system and method for minimizing vibration over the full operating range of a rotor of an apparatus. The system includes a transducer or an array of transducers for resolving up to six degrees of freedom of motion of a rotor support structure. In one embodiment the transducer is a six degree of freedom accelerometer located near the center of gravity of the structure. In addition to the motion transducer, a shaft position reference sensor is connected to the shaft of the rotor and/or rotor support structure. A signal processor that receives signals from the transducer and the shaft position reference sensor produces Fourier coefficients of motion occurring in each degree of freedom. The system utilizes analytical models or empirically derived data to describe the Fourier coefficients of acceleration (or strain) resulting from each of the available rotor adjustments. The system and method also utilizes an analytical or computational optimization scheme which computes the best combination of rotor adjustments to meet criteria specified by the user. This best combination is used to designate the appropriate adjustments.

대표청구항 ▼

A system for minimizing vibration or stress in an apparatus including a rotor to which rotating blades are attached, said system comprising: means for calculating the effects of unit mechanical adjustments on the force and moment exerted by the rotor on a support structure of the rotor; means for de

A system for minimizing vibration or stress in an apparatus including a rotor to which rotating blades are attached, said system comprising: means for calculating the effects of unit mechanical adjustments on the force and moment exerted by the rotor on a support structure of the rotor; means for determining up to three components of force and up to three components of moment generated by the rotor; means for detecting the angular position of a shaft of said rotor; means for processing signals produced by said means for determining said components of force and moment and by said means for detecting the angular position of said shaft to produce Fourier coefficients of said force and moment; means for determining, through the use of said Fourier coefficients, the optimum mechanical adjustments that will result in the minimum vibration in the support structure for the rotor; means for prescribing adjustments to the blades in accordance with said optimum mechanical adjustments.