Design of fractional order PID controller for automatic regulator voltage system based on multi-objective extremal optimization

Design of a fractional order PID controller for hydraulic turbine regulating system using chaotic non-dominated sorting genetic algorithm II

Fractional-order PID (FOPID) controller is a generalization of standard PID controller using fractional calculus. Compared to PID controller, the tuning of FOPID is more complex and remains a challenge problem. This paper focuses on the design of FOPID controller using chaotic ant swarm (CAS) optimization method. The tuning of FOPID controller is formulated as a nonlinear optimization problem, in which the objective function is composed of overshoot, steady-state error, raising time and settling time. CAS algorithm, a newly developed evolutionary algorithm inspired by the chaotic behavior of individual ant and the self-organization of ant swarm, is used as the optimizer to search the best parameters of FOPID controller. The designed CAS-FOPID controller is applied to an automatic regulator voltage (AVR) system. Numerous numerical simulations and comparisons with other FOPID/PID controllers show that the CAS-FOPID controller can not only ensure good control performance with respect to reference input but also improve the system robustness with respect to model uncertainties.

Optimum design of fractional order PIλDµ controller for AVR system using chaotic ant swarm

Chaotic multi-objective optimization based design of fractional order PIλDμ controller in AVR system

Due to the possibility of providing energy with much less dependence on the fossil fuels, renew-competent energy sources, in specified sun photovoltaic (PV) conversion have received elevated acceptance and progress in latest times. Big benefits of PV panels comprise easy and trustworthy power production and suitability for disbursed iteration. In addition the costs for photovoltaic modules is drastically lowering. To comprehend this issue, a control plan with modulation compensation scheme is likewise proposed. An exploratory three-stage seven-level cascaded H-bridge inverter has been manufactured using nine H-bridge modules (three modules for each stage). Each H-bridge module is associated with a 185-W solar panel. Simulation results are introduced to confirm the practicality of the proposed approach.

Modular Cascaded H-Bridge Multilevel PV Inverter with Distributed MPPT for Grid-Connected Applications

This paper proposes the theory and application of a new designing method of the Fractional Order PID (FOPID) controller for boost converters. FOPID is a PID where the derivation and integration orders are of fractional order rather than integer. A FOPID is an extension to classic integer order PID controllers, that potentially promises better results. The method is based on the use of a Multi-Objective optimization evolutionary algorithm called Strength Pareto Evolutionary Algorithm (SPEA). Other controller methods cannot guarantee a good start-up response but the proposed method can provide an excellent start-up response besides desired dynamic response. The optimum fractional order PID coefficients for the desired control objectives are included and designers can implement each of them based on objective functions priority. A comparison between the optimum integer order PID controller and optimum fractional order PID controller is presented in the paper. The simulation and some experimental results prove the superiority of the fractional controllers over the integer controllers.

Design of fractional order PID controller for boost converter based on Multi-Objective optimization

In this paper, a fractional-order proportional-integral-derivative (FOPID) controller is investigated for a three-level inverter called Multi-Neutral Point (MNP). For the first time, an FOPID is applied to multilevel inverters. Our main objectives are to remove the amplitude error, the phase shift error and decreasing the total harmonic distortion of the current.

Current control design with a fractional-order PID for a three-level inverter

We describe in this paper an original system of localization for an autonomous mobile system. The main advantage of our system is that it only needs one active beacon for a complete localization of the mobile robot (2 Cartesian coordinates and the orientation). The receiver is made by an array of 6 large photodiodes (1 cm) fixed on the vehicle. The active beacon is a rotating laser, fixed on a wall of the manoeuvring area, with vertical line generation lens. This beacon includes an innovative laser modulation, based on a frequency variation which is a function of its absolute angular position. In the first part, we will describe the beacon and receiver functioning and explain the theoretical principle of this system. In the second part we will describe the results provided by our simulators with the aim of determining the optimum values of physical parameters and the limits of our system. In the final part we will explain our experimental system and analyse the results obtained in real conditions to suggest future interesting improvements and other utilization types.

One active beacon for an indoor absolute localization of a mobile vehicle

This paper presents a robust voltage control intended for a photovoltaic system, the main objectives of the proposed control is to adapt with the parameter variations and load disturbances. Second order sliding mode controller, based on super twisting algorithm for DC-DC Buck converter is proposed. Applying SOSMC can improve the transient response of the system for a wide range of reference voltage or under large parameter variations and load disturbances. The robustness of the proposed control is tested by simulation in deferent operation condition such as parameters variation and load change. The experimental results confirm the effectiveness of the proposed control.

Voltage control of DC-DC buck converter using second order sliding mode control

In this paper we describe a low cost embedded system integrating all the functionalities needed for the analogical processing of radio communication transponder. We particularly put the emphasis on the optimized algorithm of tone and DTMF (dual tone multiple frequencies) detection in a DIP 8 microcontroller with only 64 bytes of RAM. We also present all the limits and the main advantages of our solution compared at other analogical solutions.

Mohammed Hamzaoui

Papers

Design of fractional order PID controller for boost converter based on Multi-Objective optimization

Current control design with a fractional-order PID for a three-level inverter

One active beacon for an indoor absolute localization of a mobile vehicle

Voltage control of DC-DC buck converter using second order sliding mode control

Signal processing algorithm on a low resource processor: DTMF strings identification on a DIL8 package microcontroller