4-port/2-way valve cyclic pressure control

[hellboy]

We have 4-port/2-way valve.

http://www.boschrexroth.com/country_units/america/united_states/sub_websites/brus_brh_i/en/products_ss/07_proportional_servo_valves/a_downloads/RA_29061_0203.pdf

From Labview can we control Amplitude,  Frequency and Offset of sinusoidical output signal (com. value)

We need to make pressure cyclic from 0 Bar to for example 100 Bar:

Duration   Pressure

1 sec - 0 Bar

0,5  sec - frorm 0 Bar to 100 Bar

1 sec - 100 Bar

0,5  sec - frorm 100 Bar to 0 Bar

repeat

[BerndF]

Hi hellboy,

you could use the express VI "Simulate Arbitrary Signal" (can be found on palette Signal Processing>>Waveform generation) to create the desired waveform. 

The output of the VI can then easily be connected to e.g. to the "DAQmx Write" VI. See the example "Cont Acq&Graph Voltage-Int Clk" contained in LabVIEW to get an impression how to perform a continous waveform output.

[hellboy]

I thinkwe must use PID control

http://techteach.no/labview/lv85/pid_control/index.htm

Is not it?

But I have no experience..

[BerndF]

Hello hellboy,

on this point I need some further information:
What is the aim of your application? Which hardware components are you using?
Can you please describe your setup more detailled, so that I can get an impression what you're realyy planning to do.

Thanks,

bernd