You need to use the error clusters on the VIs to get them in the order you want.įirst off, decide what your control structure is going to be. LabVIEW is all about dataflow to control execution order. You're mixing measured and controlled variables, and the way your code is written right now means that the execution order is indeterminate. One is via the Light sensor, and the other is by means of the Rotation VI. Right now, you're sort of doing it in two ways. Next, you need to figure out how you want to close the loop on the PID control structure. Inside that, I'd recommend using the LabVIEW PID VI, you don't need to reinvent the wheel. So you will need to create a subVI for each. It looks to me like the Rotation VI is the encoder feedback from the Port B motor?įirst off, you have to calculate each motor power setpoint individually, as you said. But, I've not had much call to use the Mindstorms VIs.

I'm fairly familiar with Mindstorms components, I'm actually using the motors as a basis for a system to test control algorithms at home. How much experience do you have with PID? I'd say stick with that unless you're very familiar with PID control. Do not be ungrateful or condescending/patronizing.ĭo you have access to the PID Toolkit in LabVIEW? It sounds like you do, based on your initial post.When asking specific details concerning your project/problem, please provide adaquate means of information, as screencaps, flow-charts, etc.Coding can be difficult at times and refurbished/recycled code that works is nice to have, therefore helping others is always welcomed.This subreddit is not set up/designed to do your homework for you.Arduino - open - source eletronic prototyping platform, also on reddit.NI LINX for Arduino and Raspberry Pi Support./r/ NationalInstruments for not only LabVIEW related infos (DAQ, News, Tutorials, etc).Short bullet point summaries of your problem/setup may be given at the end of your post. png images that have your LabVIEW source code embedded in them. When enquiring for help on your code/program, please provide a VI snippet when possible. The NI forums are a great help with a wide variety of already solved problems and plenty of solutions provided. The LabVIEW platform is scalable across multiple targets and OSs, and, since its introduction in 1986, it has become an industry leader.Ĭontext Help and Example Finder are your best friends! Make use of them. It offers unrivaled integration with thousands of hardware devices and provides hundreds of built-in libraries for advanced analysis and data visualization – all for creating virtual instrumentation. LabVIEW is a graphical programming environment by National Instruments TM used by millions of engineers and scientists to develop sophisticated measurement, test, and control systems using intuitive graphical icons and wires that resemble a flowchart.

Pid control in labview