Hydraulic fluid power. Determination of pressure ripple levels generated in systems and components - Method for motors
Hydraulic fluid power. Determination of pressure ripple levels generated in systems and components - Method for motors
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1 Scope 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:
a) the source flow ripple amplitude, in cubic metres per second, over ten individual harmonics of motoring frequency ;
b) the source impedance amplitude, in newton seconds per metre to the power of five [(N·s)/m 5 ], and phase, in degrees, over ten individual harmonics of motoring frequency ;
c) the anechoic pressure ripple amplitude, in pascals, over ten harmonics of motoring frequency ;
d) the overall root mean square (r.m.s.) anechoic pressure ripple , in pascals;
e) the blocked acoustic pressure ripple amplitude, in pascals, over ten harmonics of motoring frequency ;
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