ISO-10767-3 Hydraulic fluid power -- Determination of pressure ripple levels generated in systems and components -- Part 3: Method for motors

ISO-10767-3 - 1ST EDITION - CURRENT


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This part of ISO 10767 specifies a procedure for the determination of a rating of the source flow ripple, source impedance and pressure ripple levels generated by positive-displacement hydraulic motors, including bi-directional motors. Ratings are obtained as the following:

  • the source flow ripple amplitude, in cubic metres per second, over ten individual harmonics of motoring frequency;
  • the source impedance amplitude, in newton seconds per metre to the power of five [(N·s)/m5], and phase, in degrees, over ten individual harmonics of motoring frequency;
  • the anechoic pressure ripple amplitude, in pascals, over ten harmonics of motoring frequency;
  • the overall root mean square (r.m.s.) anechoic pressure ripple, in pascals;
  • the blocked acoustic pressure ripple amplitude, in pascals, over ten harmonics of motoring frequency;
  • the overall root mean square (r.m.s.) blocked acoustic pressure ripple, in pascals.

This part of ISO 10767 is applicable to all types of positive-displacement motor operating under steady-state conditions, irrespective of size, provided that the motoring frequency is in the range from 50 Hz to 400 Hz.

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Document Number

ISO 10767-3:1999

Revision Level

1ST EDITION

Status

Current

Publication Date

Dec. 1, 1999

Committee Number

ISO TC 131/SC 8/WG 1