LabVIEW
waveform graph problem
Solved!
Hmm. A few confusing parts to your most recent message.
@dineshmeena wrote:
i need to apply a load in term of KN force and my system max load capacity is 200kN and max output signal is 10V
This sounds like it characterises a load cell, since you have an output signal. If you are measuring the force, then your max output signal will correspond (in principle) with the rated maximum, in your case, perhaps 200kN. Take note that the maximum rated force and the maximum force tolerated might be different.
If instead you mean it takes an input voltage between 0 and 10V to determine how much force to apply, then you have probably the same points but with input and output switched. Again, ensure that the maximum force expected at 10V is what you're reading, then probably the force exerted is a linear function of the voltage input.
@dineshmeena wrote:
... oil pressurised drive valve for example if i need to give 100KN of force how much amount of voltage is to be given for the drive to occur i know it will be in terms of mv/v but i need a exact formula or relation
If you want to apply half of the maximum force, input half of the maximum voltage. Again, be careful - you talk about KN/sec at one point - this isn't a force but rather force/second. I'm not sure that this would be a specified anything... at least, I can't think what kN/s would correspond with. Pulsed force? A strange idea, and would probably be characterised by peak force and pulse frequency instead.
When you read something written in mV/V, this is a sensitivity (also commonly used in relation to load cells). The point here is that the output of the load cell depends on the excitation voltage passed through the circuit. It tells you how many mV will be output per Volt of excitation, at the full rated output. Usually this is passed to an amplifier, which then magnifies the signal before you measure it with for example a DAQ board.
Right - although it still sounds like you're describing a Load Cell since you mention "output signal". Perhaps if you provided links to manuals/spec sheets for the hardware you're using we could give more specific information.
Does this help you with selecting values? I don't really understand what you mean about extending forever - yes, an array can be extended, but you can set it to have only a certain number of values and just not show more...
In any case, here is a SubVI dialog that can be used to choose array indices. You should make the enum a typedef (I didn't so I wouldn't need to send two files - you definitely should if you use this) and then change the controls and indicators on the front panel to the typedef instead of the normal enum. Alternatively you can just recreate the VI.
Additionally, change the VI Properties (you can find these by right clicking on the icon in the editor window) and go to Window Appearance, and choose Dialog.
