DATA NORMALIZING METHOD AND SYSTEM

• US 3,845,288 A
• Filed: 09/24/1973
• Issued: 10/29/1974
• Est. Priority Date: 06/28/1971
• Status: Expired due to Term

• Current Assignee: Robert M. Lynas, Stephen A. Dier, William S. Cornyn Jr
• Original Assignee: Robert M. Lynas, Stephen A. Dier, William S. Cornyn Jr
• Inventors: Cornyn, William S. Jr., Dier, Stephen A., Lynas, Robert M.
• Primary Examiner(s): Morrison, Malcolm A.
• Assistant Examiner(s): Wise, Edward J.
• Application Number:
  US05/400,273
• Time in Patent Office: 400 Days
• Field of Search: 235/151.34,151.3 73/168,194E 324/71R,71C,71SN
• US Class Current: 702/45
• CPC Class Codes: F04B 2201/1201 Rotational speed of the axis
• CPC Class Codes: F04B 2205/05 Pressure after the pump outlet
• CPC Class Codes: F04B 2205/09 Flow through the pump
• CPC Class Codes: F04B 2205/11 Outlet temperature
• CPC Class Codes: F04B 51/00 Testing machines, pumps, or pumping installations
• CPC Class Codes: G01M 13/00 Testing of machine parts
• CPC Class Codes: G07C 3/00 Registering or indicating the condition or the working of machines or other apparatus, other than vehicles

Abstract

Raw numerical output data representing the value of a selected function or parameter which varies according to a known relationship with one or more control functions or parameters is monitored and its measured value is normalized to determined the value, i.e. normalized value of the data under preselected standard conditions at which the control parameters have predetermined standard or nominal values. Signals representing the values of the control parameters are produced and converted to correction factor signals representing the deviations, if any, between the monitored and standard values of the control parameters, and the correction factor signals are combined with a signal representing the measured value of the raw output data to obtain a normalized data signal representing the normalized value of the output data. The data normalizing operation may occur in a test mode which provides a readout representing the normalized data value, in a monitoring mode which provides a display representing the raw and normalized data values, the monitored control parameter values, and the parameter correction factor values or furnishes these values to a computer for further processing or to a data bank for storage, or in an adaptive mode which provides error or feedback signals for regulating the control parameters to maintain the latter precisely at or within a given range about their standard or nominal values.

Claims

1. A test data normalizing system for testing a rotary hydraulic pump to determine its flow rate under standard test conditions at which the pump operating parameters hydraulic fluid temperature, pump back pressure, and pump rotor speed have given nominal values, said sysTem, comprising:

means for sensing and producing a signal representing the actual pump flow rate;

means for sensing and producing a signal representing each pump operating parameter;

means for transforming each parameter signal to a correction factor signal representing the change in pump flow rate corresponding to the deviation, if any, of the respective parameter from its nominal value; and

means for combining said flow rate and correction factor signals to produce a normalized flow rate signal representing the normalized pump flow rate under said standard test condition.

2. A data normalizing system according to claim 1 including:

readout means for displaying at least one of the following values;

actual flow rate, normalized flow rate, parameter value, and correction factor.

3. A data normalizing system according to claim 1 including:

means for regulating at least one of said operating parameters in response to its respective correction factor signal to maintain the parameter within a given range about its nominal value.

4. A data normalizing system according to claim 1 including:

means for regulating each of said operating parameters in response to its respective correction factor signal to maintain the parameter within a given range about its nominal value.

5. The method of testing a rotary hydraulic pump to determine its flow rate under standard test condition at which the pump operating parameters hydraulic fluid temperature, pump back pressure, and pump rotor speed have given nominal values, said system, comprising:

sensing and producing a signal representing the actual pump flow rate;

sensing and producing a signal representing each pump operating parameter;

transforming each parameter signal to a correction factor signal representing the change in pump flow rate corresponding to the deviation, if any, of the respective parameter from its nominal value; and

combining said flow rate and correction factor signals to produce a normalized flow rate signal representing the normalized pump flow rate under said standard test conditions.