• Register
    • Login
    • Search
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Search

    P term cutoff in PID controller

    Mervis
    1
    1
    583
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • M
      Matt last edited by

      Hi,

      The PID controller appears to not allow for the P term to be negative. I'm using cooling mode and if the temperature drops below the setpoint the PFactor of the controller just stays at zero rather than becoming negative. This contributes to a large overshoot in the system since it take a long time for the I term to compensate. Is there a way to allow for the P term to be negative?

      Thanks,
      Matt

      1 Reply Last reply Reply Quote 0
      • First post
        Last post