Generating a vibration profile for a rotating cooling device in a computer system
First Claim
1. A method for a generating a vibration profile for a single rotational device in a computer system, the method comprising:
- using at least one computer system for;
sequentially sweeping a rotation speed of the single rotational device over a range of rotation speeds, and, while driving the single rotational device at each rotation speed,collecting a time-domain vibration signal produced by the single rotational device; and
computing a frequency spectrum of the time-domain vibration signal at each rotation speed, thereby generating a set of frequency spectra associated with two or more rotation speeds over the range of rotation speeds for the single rotational device;
combining the set of frequency spectra to generate a composite vibration profile for the single rotational device;
identifying at least one structural resonance of the computer system; and
modifying the composite vibration profile for the single rotational device to mitigate the effect of the at least one structural resonance of the computer system.
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Accused Products
Abstract
One embodiment of the present invention provides a system that generates a vibration profile for a rotational device in a computer system. During operation, the system sequentially sweeps a rotation speed of a rotational device over a range of rotation speeds. While driving the rotational device at each rotation speed, the system collects a time-domain vibration signal produced by the rotational device and subsequently computes a frequency spectrum of the time-domain vibration signal. In this way, the system generates a set of frequency spectra associated with the range of rotation speeds. Next, the system combines the set of frequency spectra to generate a composite vibration profile for the rotational device.
23 Citations
20 Claims
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1. A method for a generating a vibration profile for a single rotational device in a computer system, the method comprising:
using at least one computer system for; sequentially sweeping a rotation speed of the single rotational device over a range of rotation speeds, and, while driving the single rotational device at each rotation speed, collecting a time-domain vibration signal produced by the single rotational device; and computing a frequency spectrum of the time-domain vibration signal at each rotation speed, thereby generating a set of frequency spectra associated with two or more rotation speeds over the range of rotation speeds for the single rotational device; combining the set of frequency spectra to generate a composite vibration profile for the single rotational device; identifying at least one structural resonance of the computer system; and modifying the composite vibration profile for the single rotational device to mitigate the effect of the at least one structural resonance of the computer system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A non-transitory computer readable storage medium storing instructions that when executed by a computer cause the computer to perform a method for generating a vibration profile for a single rotational device in a computer system, the method comprising:
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sequentially sweeping a rotation speed of the single rotational device over a range of rotation speeds, and, while driving the single rotational device at each rotation speed, collecting a time-domain vibration signal produced by the single rotational device; and computing a frequency spectrum of the time-domain vibration signal at each rotation speed, thereby generating a set of frequency spectra associated with two or more rotation speeds over the range of rotation speeds for the single rotational device; combining the set of frequency spectra to generate a composite vibration profile for the single rotational device; identifying at least one structural resonance of the computer system; and modifying the composite vibration profile for the single rotational device to mitigate the effect of the at least one structural resonance of the computer system. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An apparatus that generates a vibration profile for a single rotational device in a computer system, comprising:
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a speed-sweep mechanism configured to sequentially sweep a rotation speed of the single rotational device over a range of rotation speeds; a data-collection mechanism configured to collect a time-domain vibration signal produced by the single rotational device while the single rotational device is rotating at each rotation speed; a computing mechanism configured to compute a frequency spectrum of the time-domain vibration signal associated with each rotation speed, thereby generating a set of frequency spectra associated with two or more rotation speeds over the range of rotation speeds for the single rotational device, wherein the computing mechanism is further configured to combine the set of frequency spectra to generate a composite vibration profile for the single rotational device; a resonance-identification mechanism configured to identifying at least one structural resonance of the computer system; and a remediation mechanism configured to modify the composite vibration profile for the single rotational device to mitigate the effect of the at least one structural resonance of the computer system. - View Dependent Claims (18, 19, 20)
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Specification