A Wide Area Measurement System (WAMS) based conventional damping controller is designed and added to the main control loop of PV plant in order to damp the SSR and also investigation of the destructive effect of time delay in remote feedback signal.
Furthermore, due to the robustness properties of SM, the compensation loop dynamics may be assigned independently of the main control loop.
This estimator is used as an auxiliary control loop to reject these disturbances and parameter perturbations while avoiding chattering in the main control loop.
This module realized without any structural changes in the main control loop is addressed within an open architecture machine-tool framework to avoid trajectory constraints activation.
During initialization, the modules (CM, CA and MM) are created, and two threads are started for executing the main control loop: one thread corresponds to the Component Manager thread that executes and monitors the managed system as a set of running components, while the other thread is the Configuration Adapter thread that handles events that may imply possible reconfigurations.
The key idea is to add to the robust controller output a second control signal generated by an adaptive artificial neural network capable of compensating a wide range of perturbations, uncertainties, and faults, so that adequate performance characteristics of the main control loop is maintained.
The reason for using the Multipoint Interface/Decentralized Peripherals (MPI/DP) connection in main control loop instead of Ethernet connection is that MPI/DP speed is 185 kbps and Ethernet connection speed is 10/100 kbps, which increases the speed of transfer data through the system.
Compared with the settling time of a main fuel valve and the band-width of a main fuel control loop, that is, 1.2 s and 2 Hz respectively, TFM is considered to be adaptive to measure the fuel of aero-engine.
For the strong couplings between control loops of main steam pressure and power output, a new design for decoupler aimed at decoupling for set-points and unmeasured pulverized coal disturbance of the system at the same time is presented.
There are some design improvement such as adoption of multi-loop controllers, multiplexing devices for both safety and non safety control, universal soft controller in main control room for both safety and nonsafety I &# C equipment controls.
