Hello,
I am reconstructing a flight simulator on a real airplane which was donated to a theme park (a Vickers Viscount for 52 passengers). I built the simulator about two years ago using LabVIEW software but controlling PID and PWM with hardware. Now I want to mordenize the attraction and use a whole National Instruments system because of aftersales support, accuracy, etc.
The system works as follows: A hydraulic cylinder lifts the whole airplane from the front landing gear while it pivots on its rear landing gear wheels. Therefore there is only one hydraulic cylinder and it moves up or down. The airplane moves according to a movie shown on the inside of the plane which must be able to go up or down according to a positioning sequence. Eg: at second 1, the airplane´s nose must be 1m high, 2s it must be at 0.5m, etc. The hydraulic system consists of a proportional valve (to control the cylinder's speed) and a Directional Valve (which controls in which direction the airplane should move) since the airplane's nose must go up and down. The airplane's position is informed by an encoder and corrected by the PID. All of the valves work at 24V and the proportional valve is controlled using PWM (about 1.5 A current), which as a normally open valve. When the airplane reaches the desired position, the directional valve must go to its center position (no solenoid is energized).
I have been considering buying a PCI-6239, so I can read the encoder's position, input it into the PID, generate a trayectory and correct the PWM cycle. I know this is not the most efficient way since I have read in some threads because Windows is not very precise and I should use LV Real Time (which I have never used).
I have been researching on Motion Drives 7342. The issue is that besides the PWM needed to control the proportional valve, I need a 24V output to control the directional valve.
Does anyone have a Harware recommendation for this application, or is the PCI-6239 a good choice?
Thank you,
Juan F. Tettay.
