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  1. M

    Measurement and controller sampling time for speed control

    Hi everyone, I have wondered about choosing rightly cycle time for measurement and sampling time for control speed of DC motor. I have incremental encoder and I have implemented Kalman Filter for estimate speed which is used in feedback loop. Am I right that cycle time of Kalman Filter...
  2. M

    Derivative Filter in velocity-form PID algorithm?

    Hi everyone! I have wondered about implementation a derivative filter in velocity form of PID algorithm (for example exponential moving everage filter). I haven't seen in any books or forum about necessity to use derivative filter in velocity algorithm. However, I think derivative filter is...
  3. M

    PLC - FIXED SCAN PROGRAM

    Hi, I am newby in plc programming. I have doubts about influence on Fixed scan program on CPU work. I have Melsec FX5U PLC controller and I have recently experimented with fixed scan program. I have created FC block and in case of execution function in Main Program (without interrupt), PLC...
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