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...
Dear Skogsgurra and All,
Finally I have found the source of the problem. The motor has 12 wires and it was wired wrongly, it was in delta but wiring it to delta-delta, solved the issue.
I am sorry! Thank you for your time! At least I learnt a lot from you comments. I will get into the PID...
Dear All,
Thank you for the further info. I got some idea from your post.
DickDV - You wrote: “Just as I suspected, the tuning you did is to create a model model.” I am not sure what you meant by this.
Actually I started to wonder if my problem could be something to do with the motor and not...
Dear All,
Thank you to everybody, I am going to answer to all of you in this post.
DickDV
The manual of the Bonfiglioli VFD says under the other functions: PID control. The following parameters can be set:
11-0: PID Operation Selection
0000: PID disable
0001: PID enable (Deviation is...
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...
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...
