US3603140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graphic vibration resolver
Assignee: Honeywell Inc
•
Filing: 1969-01-15
•
Granted: 1971-09-07
•
Expires: 1989-01-15
Abstract
Abstract A graphic vibration resolver for rotating machinery including a programmable wave analyzer, a graphic X-Y plotter, and control electronics that provides an X-Y plot of vibration amplitude versus the gear ratio between a component of interest and a reference machine speed as measured by, for example, a tachometer (Tach Ratio). The present invention provides that a peak for a particular component of interest always occurs at the same X-axis location on the resulting plot regardless of speed changes of the machine being analyzed.
Inventors
- 👤 Richard B Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:30
CPC Classifications
G; G01; G01H; G01H1/00; G01H1/003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
326 words
A vibration resolver for indicating the vibration characteristics of rotating equipment having a multiplicity of interconnected component parts having different rotational frequencies but bearing respective unique ratios determined by fixed gear ratios relative to the rotation frequency of a predetermined one of said component parts irrespective of the speed of rotation of said equipment, comprising a. vibration pickup means coupled with said equipment for providing a multiple-frequency signal output corresponding to the rotational frequencies of said component parts, said frequencies varying in response to changes in speed of said equipment, b. sweep volTage means for providing a variable-magnitude sweep voltage signal, c. means coupled to said sweep voltage means for controlling the location of a gear ratio indication on a visual display of gear ratio versus amplitude, d. means coupled to said rotating predetermined one of said component parts, to said sweep voltage means and said gear ratio locating means for providing a reference frequency signal, e. means responsive to said reference frequency signal for providing a control frequency signal proportional to the ratio of said reference frequency to a band of frequencies including the frequencies of a plurality of said component parts to be indicated, f. means for modulating said multiple frequency signal with said control frequency signal for providing a normalized amplitude signal representative of the vibration characteristics of each of said plurality of parts, having a peak amplitude only when said multiple-frequency signal is equal in frequency to said control frequency signal, and g. means coupled to said modulating means for providing a normalized amplitude indication and coacting with said gear ratio-locating means to produce an amplitude vs. gear ratio indication of the magnitude of vibration of each of said plurality of parts over the speed range of said equipment whereby a peak amplitude for said predetermined one of said component parts always occurs at the same gear ratio location on the resulting indication regardless of speed changes of the equipment being analyzed.
Claim 2
Dependent Claim
326 words
A vibration resolver for indicating the vibration characteristics of rotating equipment having a multiplicity of interconnected component parts having different rotational frequencies but bearing respective unique ratios determined by fixed gear ratios relative to the rotation frequency of a predetermined one of said component parts irrespective of the speed of rotation of said equipment, comprising a. vibration pickup means coupled with said equipment for providing a multiple-frequency signal output corresponding to the rotational frequencies of said component parts, said frequencies varying in response to changes in speed of said equipment, b. sweep volTage means for providing a variable-magnitude sweep voltage signal, c. means coupled to said sweep voltage means for controlling the location of a gear ratio indication on a visual display of gear ratio versus amplitude, d. means coupled to said rotating predetermined one of said component parts, to said sweep voltage means and said gear ratio locating means for providing a reference frequency signal, e. means responsive to said reference frequency signal for providing a control frequency signal proportional to the ratio of said reference frequency to a band of frequencies including the frequencies of a plurality of said component parts to be indicated, f. means for modulating said multiple frequency signal with said control frequency signal for providing a normalized amplitude signal representative of the vibration characteristics of each of said plurality of parts, having a peak amplitude only when said multiple-frequency signal is equal in frequency to said control frequency signal, and g. means coupled to said modulating means for providing a normalized amplitude indication and coacting with said gear ratio-locating means to produce an amplitude vs. gear ratio indication of the magnitude of vibration of each of said plurality of parts over the speed range of said equipment whereby a peak amplitude for said predetermined one of said component parts always occurs at the same gear ratio location on the resulting indication regardless of speed changes of the equipment being analyzed.
Claim 3
Dependent Claim
34 words
A vibration resolver of the character recited in claim 1 in which said means for controlling the location of a gear ratio indication includes an X-axis drive means responsive to said sweep voltage signal.
Claim 4
Dependent Claim
88 words
A vibration resolver of the character recited in claim 1 in which said means for providing a reference frequency signal includes a. means deriving a signal proportional to the error between the actual engine speed and a predetermined reference engine speed, b. means for providing a signal equal to the product of said error signal and a variable impedance coupled to said sweep voltage means, and c. means for varying said reference frequency signal in response to the algebraic sum of said sweep signal and said product signal.
Claim 5
Dependent Claim
29 words
A vibration resolver of the character recited in claim 6 in which said means for providing an amplitude indication includes Y-axis drive means responsive to said normalized amplitude signal.
Claim 6
Dependent Claim
42 words
A vibration resolver of the character recited in claim 2 in which said means for providing a product signal includes a variable impedance responsive to said error signal and to said location of said gear ratio indication for providing said product signal.
Claim 7
Dependent Claim
43 words
A vibration resolver of the character recited in claim 5 in which said multiplying means includes potentiometer means having a resistive winding energized by said error signal and a wiper arm positionable in response to said sweep signal for providing said product signal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |