On-board engine trim balance display and interface

• US 6,027,239 A
• Filed: 04/30/1997
• Issued: 02/22/2000
• Est. Priority Date: 04/30/1997
• Status: Expired due to Term

• Current Assignee: Vibro-Meter, SA (Meggitt PLC)
• Original Assignee: Endevco Corporation (Illinois Tool Works Inc.)
• Inventors: Ghassaei, Saeid
• Primary Examiner(s): Grant, William
• Assistant Examiner(s): PATEL, RAMESH B
• Application Number:
  US08/846,299
• Time in Patent Office: 1,028 Days
• Field of Search: 364/550, 364/528.14, 364/188, 364/172, 364/173, 364/174, 364/175, 364/176-179, 364/574, 702/56, 73/583, 73/659, 73/660, 73/462-465, 73/457, 73/458, 244/1 N
• US Class Current: 700/279
• CPC Class Codes: G01H 1/003 of rotating machines G01H1/10 takes precedence

Abstract

A display and user interface incorporated into an on-board engine vibration monitoring and trim balance system. The interface consists of an alphanumeric display and a number of push buttons integrally formed with a front panel of the system. The user operates the interface to obtain and alter information pertaining to engine vibration data, engine trim balance solutions, and balance part configurations. Push buttons are used to scroll through an elaborate menu structure for receiving information and making selections among various available functions. The menu structure may in particular provide for the user to review particular installed balance part location data prior to asking the system to compute an optimum balance solution. Once the balance solution is calculated, the user may review a list of balance parts to be removed from and installed on the engine.

Claims

1. In an on-board engine trim balance information system comprising a housing and electronic circuit assembly in said housing, said housing having a front face, and said electronic circuit assembly including signal processing means for receiving signals from one or more engines indicative of vibrations generated during operation of said one or more engines and for processing said signals to generate vibration data, the system comprising:

an integral alphanumeric display, disposed on the front face of the housing and integrally formed therewith, the alphanumeric display having multiple lines and multiple characters per line, the display operable to present vibration data and other information;

a computer including a memory and a processing unit, the computer being connected to receive and store the vibration data from the signal processing means, and also being connected to operate the display, the processing unit and memory connected to provide a computer program that implements a plurality of display modes for presenting the vibration data and engine balance information derived by the computer from the vibration data, the computer program providing for switching between the display modes, the computer program also providing a multilevel menu structure for presenting the vibration data and engine balance information; and

an integral operator interface including a set of actuators, the actuators disposed integrally with the front face of the housing, and the actuators connected to the computer for permitting a user of the system to perform a sequence of interactions by operating the actuators on the face of the housing to switch the computer program between the display modes, and to also thereby operate the multilevel menu structure to review vibration data and engine balance solution information.

2. A system as in claim 1 wherein one of the modes which may be selected by the user operating the integral interface is a flight history mode in which the display presents flight data for a past engine leg as recorded by the computer.

3. A system as in claim 2 wherein the computer records flight data for multiple legs and the computer provides for display modes in which data for each leg is displayed by sequential selection of the display modes through operation of the actuators.

4. A system as in claim 3 wherein the computer records flight data for multiple engines, and the computer provides for display modes in which data for each engine is displayed by sequential selection of the display modes through operation of the actuators.

5. A system as in claim 2 wherein the computer records a highest vibration for both a compressor and a turbine component of the engine as well as a time of highest vibration for these components, and the computer provides for display modes in which high vibration compressor data, high vibration turbine data, and time of highest vibration data is displayed by sequential selection of the display modes through operation of the actuators.

6. A system as in claim 5 wherein the computer determines a percent of full speed data value for the highest vibration of the compressor and turbine, and the computer provides for display modes in which the percent of full speed data values are displayed by sequential operation of the actuators.

7. A system as in claim 1 wherein one of the modes which may be selected by the user operating the integral interface is an engine balance menu mode in which the display presents a sequence of prompts for selecting other modes, and the prompts include a show imbalance data mode prompt and an engine trim balance mode prompt, and the show imbalance data mode prompt and the engine trim balance mode prompt may be selected by sequential operation of the actuators.

8. A system as in claim 7 in which one of the prompts also includes an edit engine balance parts prompt which may also be selected by sequential operation of the actuators.

9. A system as in claim 1 wherein the computer determines a percent of full speed data value for the highest vibration of the compressor and turbine for multiple predetermined ranges of engine speeds, and the computer provides for a plurality of imbalance menu display modes in which the highest vibration data for the multiple predetermined ranges of engine speeds are displayed by sequential operation of the actuators.

10. A system as in claim 1 wherein one of the modes which may be selected by the user operating the integral interface is an edit engine balance parts menu mode in which the display presents a sequence of prompts for reviewing a list of data stored in the computer which represents particular balance part identification and the location of installation of such balance parts on the engine.

11. A system as in claim 1 wherein one of the modes which may be selected by the user operating the integral interface is an edit engine balance parts menu mode in which the display presents a sequence of prompts for permitting the user to modify a list of data stored in the computer which represents particular balance part identification and the location of installation of such balance parts on the engine.

12. A system as in claim 1 wherein one of the modes which may be selected by the user operating the integral interface is an engine trim balance menu mode in which the display presents a sequence of prompts for permitting the user to review engine trim balance solutions.

13. A system as in claim 12 wherein the sequence of prompts include a one-plane solution mode prompt and a multiple-plane solution mode prompt, and the one-plane solution mode prompt and the multiple-plane solution mode prompt may be selected by sequential operation of the actuators.

14. A system as in claim 12 wherein one of the modes which may be selected by the user operating the integral interface is a one-plane solution mode in which the display presents a sequence of prompts for displaying raw one-plane balance solution data.

15. A system as in claim 12 wherein one of the modes which may be selected by the user operating the integral interface is a two-plane solution mode in which the display presents a sequence of prompts for displaying raw two-plane balance solution data.

16. A system as in claim 12 wherein one of the modes which may be selected by the user operating the integral interface is a balance part mode in which the display presents a sequence of prompts for displaying information concerning which balance parts are to be installed on the engine.

17. A system as in claim 12 wherein one of the modes which may be selected by the user operating the integral interface is a balance part mode in which the display presents a sequence of prompts for displaying information concerning which balance parts are to be removed from the engine.

18. A system as in claim 17 wherein the balance part mode also presents a sequence of prompts for displaying information concerning which balance parts are to removed from the engine.