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  • Users: nado59
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  1. nado59

    fluid compressibility - spring effect

    Dear All, I have found a brief statement that the spring effect of compressed fluid in hydraulic devices depends on the jerk (first derivative of acceleration) of the piston movement. I can clearly see from an experiment that this is true but I would like to know the detailed explanation. My...
  2. nado59

    VFD problem to run at low frequencies

    Hi, I am a mechanical/automotive engineer with limited knowledge in Electrical/Electronic engineering. I have a machine driven by a 2.2kW motor with an VFD, both the motor and the VFD made by Watt, the VFD is model L2500, it is a basic model, no Vector Control. I changed the Watt VFD to a...
  3. nado59

    oversteer measurement formula in Motec i2

    Hi, I had a look of the Motec i2 pro software. There is a maths function delivered with it, which calculates oversteer. According to my (very limited) knowledge, there is no low-cost way to get a reliable measure of oversteer/understeer. The formula in the software uses only the vehicle speed...

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