The digital implementation makes it doable to embed a number of PID controllers on the identical instrument, whose inputs and outputs may be both cascaded in a sequential trend or utilized in a parallel configuration, that’s, independently of each other.
Because of the kind of structure depicted in Determine 6, the PID choice embedded in lock-in amplifiers enhances the flexibility of the devices, making them profit a big number of functions – though the precise software wants may considerably differ from each other.
As beforehand talked about, figuring out acceptable beginning circumstances for a PID controller and its optimization is usually a difficult activity. LabOne® management software program, the software program of Zurich Devices interfacing with the {hardware}, provides a package of a number of instruments to streamline the method of establishing and optimizing a PID controller, making the duty extra environment friendly and simple.
LabOne instruments just like the Sweeper, the PID Advisor and Autotune can assist the person with the implementation of PID management loops, offering intuitive adjustability of the bandwidth, velocity and preliminary tuning parameters, based on the specified efficiency.
For instance, the Sweeper can be utilized to acquire the open-loop response of the machine beneath check (DUT) via sign sweeping, then the PID Advisor selects preliminary suggestions acquire parameters primarily based on predefined switch features and the DUT open-loop parameters obtained with the Sweeper measurement. After closing the loop, to reduce residual error sign and improve management efficiency, the Auto Tune characteristic may be utilized to the suggestions sign to dynamically adjusts suggestions acquire parameters.
Moreover, due to LabOne’s assist for the preferred programming languages (Python, C/C++, MATLAB®, LabVIEW™ and .NET), most versatility is ensured when establishing a management loop and its successive optimization and refinement.
