Since, AC voltage controller fed starting of induction motor is a non-linear process, identification of optimal values of PI controller constants is performed using a novel ant colony based optimization technique.
However there is a difference between the responses with and without the use of the PID controller, as shown in Fig. 16. Figure 16 shows that the PID controller is not doing a good job, due to a poor choice of PID controller constants.
As mentioned in section 2, the control output is the supplementary control input of the converter's pole-controller (constant dc-current controller) at the rectifier side of HVDC system.
Designing a model-based controller for constant cutting force control is difficult because an accurate mathematical model in the turning system is hard to establish.
The robust control design can provide a fixed controller with constant gains to compensate all uncertainties, following the worst case scenario concept.
The controller has constant parameters, but it performs as an intelligent controller.
The proposed controller uses constant axial offset (AO) strategy to ensure xenon oscillations remain bounded.
The proposed controller uses constant axial offset (AO) strategy to maintain xenon oscillations to be bounded.
