发明名称 |
ONLINE FREQUENCY RESPONSE CHARACTERIZATION SYSTEM AND METHOD |
摘要 |
A system may include a controller that may control operations of a device according to a control loop and characterize a frequency response of the device while the device is operating. The controller may characterize the frequency response by adding a perturbation signal to any signal in the control loop. The controller may then determine a first transformed signal by performing a first discrete Fourier transform on a first signal in the control loop at a frequency of the perturbation signal and determine a second transformed signal by performing a second discrete Fourier transform on a second signal in the control loop at the frequency of the perturbation signal. The controller may then determine the frequency response at the frequency by comparing a first amplitude and a first phase of the first transformed signal to a second amplitude and a second phase of the second transformed signal. |
申请公布号 |
US2016048125(A1) |
申请公布日期 |
2016.02.18 |
申请号 |
US201414252444 |
申请日期 |
2014.04.14 |
申请人 |
General Electric Company |
发明人 |
Cheta Ahmed MY;Shepard Mark Eugene;Hendrickson Seth Andrew;Laskowski Benjamin David;Adasa Patrick Nkrumah;Aljahmi Mohamed Ahmed;McArthur Andrew David |
分类号 |
G05B19/418;G06F17/14 |
主分类号 |
G05B19/418 |
代理机构 |
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代理人 |
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主权项 |
1. A system, comprising:
a controller configured to:
control one or more operations of a device according to a control loop; andcharacterize a frequency response of the device while the device is operating by:
adding a perturbation signal to any signal in the control loop;determining a first transformed signal by performing a first discrete Fourier transform on a first signal in the control loop at a frequency that corresponds to the perturbation signal;determining a second transformed signal by performing a second discrete Fourier transform on a second signal in the control loop at the frequency that corresponds to the perturbation signal; anddetermining the frequency response at the frequency by comparing a first amplitude and a first phase of the first transformed signal to a second amplitude and a second phase of the second transformed signal. |
地址 |
Schenectady NY US |