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Due to the inherent hysteresis in a PAM, the accompanying control of such actuator becomes complicated. In this paper, the pressure/length hysteresis is mathematically described by applying a Maxwell-slip model. The model of this hysteresis is then fed forward to compensate for the actuator nonlinearities. The designed controller is therefore just a simple PI-controller. It shows robust performance...
A double-loop control system based on human-simulated intelligent control (HSIC) is designed using a mathematical model of a brushless DC motor (BLDCM). In the double-loop motor control system, a conventional PI controller is implemented for the current loop and an HSIC speed controller using the characteristic model-based multi-mode control is adopted for the speed loop. The controller parameters...
The nonlinear PI parameter adjustment method by RBFN was considered in this research. When the decision of the parameter of the controlled object with a nonlinear characteristic changed the target value by doing by RBFN, an excellent result was obtained. The adjustment method of the intermediate value of the hidden layer of this RBFN is scheduled to be considered in the future.
This paper studies how to design a congestion controller in TCP/AQM networks. In Hollot et al. (IEEE Trans. on Automatic Control, Vol. 47, No.6, 2002), the congestion controller is conservatively designed due to using the linearized model of the TCP/AQM networks in which a structured time-delay related term is treated as an unstructured uncertainty. Without treating any time-delay related term as...
This paper presents a comprehensive analysis of the direct torque and flux control (DTFC) scheme for interior permanent magnet synchronous motor (IPMSM) drives. Closed-loop regulation of the torque and stator flux linkage are achieved via two independent proportional-integral (PI) controllers. The reference voltage vectors are generated by a space vector modulation (SVM) unit. A mathematical analysis...
This paper presents a new method for designing the PIDA (Proportional-Integral-Derivative-Acceleration) Controller for a third order system. The results from simulations shown that all desired specifications can easily met by changing only one parameter. Comparing of the performances of the closed-loop in continuous-time system from this new simple method called ldquoKitti's Methodrdquo with the design...
The paper suggests an approach to the optimal design of original Takagi-Sugeno PI-fuzzy controllers (PI-FCs) applied in ship course control. The optimization is done in terms of the Iterative Feedback Tuning algorithms making use of new gradient experiments. Signal processing aspects are discussed with this regard to enable the implementation of low-cost fuzzy controllers. One case study concerning...
Nowadays DC-DC Converters are used for controlling and stabilizing DC voltages, feeding electric vehicles, telephone sets and industrial inverters. Recently improving the performance of the DC-DC converters is one of the goals of engineers in the industries and several control methods are used to control Buck converters. In this paper, PI and PID controllers are used to optimize the DC-DC converter...
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