hello all
i am new at labview and DAQ devices. i am working on project where using an electro-hydraulic servo system. i want to control the position of the hydraulic cylinder by means of controlling proportional hydraulic valve.i need to control the cylinder to extend and retract continuously. to do that, i need to give command signal (voltage) to the proportional valve with pattern like the attached picture, actually it is similar to PWM signal.
i am using Labview connected with NI-USB 6251. how to generate signal with pattern like the attached picture? i am trying to use Square signal on Simulate signal express VI, but when i set to the low frequency ( 0.1 Hz) , i got error message that "the buffer size is too small". im trying to change the buffer size but error still happened. i can generate it via counter output, but i need to generate it via analog output.
thanks for your help guys.
