Abstract: Methods and systems for creating Campbell diagram displays for illustrating vibration characteristics of a moving apparatus, such as a rotary machine, are provided. Data, representing vibration amplitudes and frequencies are recorded against rotational speeds of an apparatus. The data is used to create waveforms representing the forward and/or reverse vibration frequencies of the apparatus. The waveforms in turn are used to create spectral line envelopes to provide enhanced two dimensional images indicating the amplitudes of the vibrations of the apparatus at particular rotational speeds. The spectral line envelopes may be empty, filled with one or more colors, or other illustration features to impart solidity to the envelopes to enhance visibility.

Abstract: There is set forth herein a method comprising applying a drive signal to a drive element in a sensor assembly having a drive element and one or more sensor element so that responsively to the drive signal the drive element generates a magnetic flux that travels through a target, determining a strain of the target using a picked up output signal picked up by the one or more sensor element. In one embodiment, a sensor assembly can be employed for detecting a proximity of the target using a picked up output signal picked up by e.g., the drive element. In one embodiment, a drive signal can have a plurality of frequency components.

Abstract: There is set forth herein a method comprising applying a drive signal to a drive element in a sensor assembly having a drive element and one or more sensor element so that responsively to the drive signal the drive element generates a magnetic flux that travels through a target, determining a strain of the target using a picked up output signal picked up by the one or more sensor element. In one embodiment, a sensor assembly can be employed for detecting a proximity of the target using a picked up output signal picked up by e.g., the drive element. In one embodiment, a drive signal can have a plurality of frequency components.

Abstract: Methods and systems for creating Campbell diagram displays for illustrating vibration characteristics of a moving apparatus, such as a rotary machine, are provided. Data, representing vibration amplitudes and frequencies are recorded against rotational speeds of an apparatus. The data is used to create waveforms representing the forward and/or reverse vibration frequencies of the apparatus. The waveforms in turn are used to create spectral line envelopes to provide enhanced two dimensional images indicating the amplitudes of the vibrations of the apparatus at particular rotational speeds. The spectral line envelopes may be empty, filled with one or more colors, or other illustration features to impart solidity to the envelopes to enhance visibility.

Abstract: A method for operating a wind turbine based on operating profiles for the wind turbine corresponding to operating modes. The method includes defining operating modes and acquiring a plurality of parameter values, each based on a reading from a sensor of the wind turbine. Each of the parameter values is associated with one of the operating modes to create a wind turbine operating profile for each mode. The wind turbine is controlled based on the operating profiles.

Abstract: A system and method for monitoring the condition of a gear assembly analyzes a signal output by a vibration detector that is attached to the gear assembly. Each time that an amplitude of the signal output from the vibration detector exceeds a threshold value, the system assumes that a debris particle has passed between meshing parts of the gear assembly. The number of times that this occurs, and possibly the amplitude of the vibrations are analyzed to determine a condition of the gear assembly, and possibly a damage index. This system and method are particularly applicable to planetary gear arrangements where the vibration detector can be mounted on a fixed ring gear of the gear assembly, or a structure upon which the fixed ring gear is mounted.

Abstract: A method for operating a wind turbine based on operating profiles for the wind turbine corresponding to operating modes. The method includes defining operating modes and acquiring a plurality of parameter values, each based on a reading from a sensor of the wind turbine. Each of the parameter values is associated with one of the operating modes to create a wind turbine operating profile for each mode. The wind turbine is controlled based on the operating profiles.

Abstract: A system and method for monitoring the condition of a gear assembly analyzes a signal output by a vibration detector that is attached to the gear assembly. Each time that an amplitude of the signal output from the vibration detector exceeds a threshold value, the system assumes that a debris particle has passed between meshing parts of the gear assembly. The number of times that this occurs, and possibly the amplitude of the vibrations are analyzed to determine a condition of the gear assembly, and possibly a damage index. This system and method are particularly applicable to planetary gear arrangements where the vibration detector can be mounted on a fixed ring gear of the gear assembly, or a structure upon which the fixed ring gear is mounted.