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The inverted pendulum is the most popular benchmark for teaching and researches in control theory and robotics. Modeling and control of inverted pendulum on a cart is as one of the most important case in control theory. In this paper a new method in Piecewise Affine (PWA) models identification based on numerical analysis is proposed. The evaluation of this algorithm is investigated on a real system...
In this paper, design and implementation of Neuro-Fuzzy Algorithm for Fractional Order Controller System has been carried out. Fractional order system and controller has wide application in control word. Simulation study for the fractional order transfer function using different control algorithm has been done. Fractional order system was controlled by ANFIS and Classical PID controller. Comparative...
This paper presents a new single inductor Dual Input-Dual Output dc-dc converter for a standalone hybrid energy system. The converter has two unidirectional ports, one bidirectional port for storage element and one output port. The converter operates in dual input-dual output mode, dual input-single output mode and single input-single output mode. Both the input sources can power up the load individually...
Hovering autonomous underwater vehicle (HAUV) play an important role in short distance underwater inspection mission. There are a lot of disturbances and uncertainties underwater, a robust control is needed to minimize the effects of external influences on HAUV's system behaviour, subjects to the constraint of not having a complete representation of the HAUV system. This paper describes the development...
This paper proposes a new type of predictor to equip automatic PID controllers. The presented predictor is designed to ensure an adequate control for long time processes, whose evolution in time should be controlled in closed loop. At these processes, as a result of automatic control, the outputs followed run within limits for a period of time which, sometimes, exceeds the period in which the system...
The paper proposes a simple Takagi-Sugeno PI-fuzzy controller for an anaerobic digestion process. A fifth order nonlinear model of the anaerobic digestion process is first presented. A second order linear model of the process is next proposed, and the parameters of the linear model are obtained from an optimization problem solved by a Gravitational Search Algorithm. A PI controller is designed for...
This research deals with the design of PI controller for the liquid level control of separator in an ocean thermal energy conversion (OTEC) plant with Uehara cycle by considering some kinds of disturbances. The PI controller is designed for a liquid level model under H∞ constraint. The effectiveness of the designed PI controllers is evaluated through simulations considering disturbances.
In this paper, energy management control strategies are proposed for hybrid electric vehicle with brushless dual-rotor flux switching permanent magnet (BDRFSPM) motor. The proposed methods not only make the output speed correspond to the working condition, but also make the internal combustion engine operate in the fuel saving mode. The corresponding battery and internal combustion engine performances...
A mechanical parameter estimation algorithm for permanent magnet synchronous motor (PMSM) drive system basing on sliding mode observer is proposed in this paper. First, an extended sliding mode mechanical parameter observer (ESMMPO) is presented to track system disturbances in real time. Based on this ESMMPO, a simple algorithm for mechanical parameter estimation of the PMSM control system is presented...
This paper presents a digital hysteresis control method, with which the rectifier can work at a constant switching frequency and the dynamic response of current is fast. And also, the control doesn't need single-phase lock loop. Simulation results validate the proposed method.
In this paper, a reversible multilevel nine-leg converter for three-phase applications is investigated. This topology can be applied in line voltage regulator, power factor correction (PFC) and uninterrupted power supplies (UPS). It is composed of three single-phase three-leg converters with a leg shared by both load and grid sides. Suitable modelling, a pulse-width modulation (PWM) strategy based...
Evolution of information technologies and increased automation of manufacturing processes allow organizing the control of remote dynamic objects at real-time operation mode. The application of web-technology for organization of human machine interface makes it possible to conduct data-processing via local network and Internet. This paper is devoted to processes of identification of dynamic properties...
In this paper, modulation processes have been analyzed in six-phase asymmetrical motor drive on the base of four inverters with discontinuous synchronous modulation. It has been shown, that flexible PWM strategy based on control of switching frequencies of inverters as function of dc voltages allows to improve system performance and to insure voltage waveform symmetries during adjustment range. Simulations...
This paper presents a new power sharing approach among parallel battery storage systems within an autonomous microgrid. The proposed approach considers the state of charge (SoC) of the batteries to control the ratio of their output powers. To facilitate this, a new SoC-based droop control is proposed. In this method, the ratio of output power for all the batteries is determined as a function of their...
With characteristics of high efficiency, low energy consumption and zero emission, pure electric vehicle is an effective solution for the recent energy crisis and environmental issues. This paper develops a pure electric vehicle control strategy that will be used on ENRANGER G3 — a compact SUV model by Wei Chai Motor. A hardware in the loop (HIL) test platform was constructed accordingly. The platform...
A Self-Learning Hybrid Fuzzy-PID Controller is developed for pressure control in a first order hydraulic tank system. The system is closed loop wherein a hybrid Fuzzy-PID controller prescribes the duty cycle of a PWM generator which controls an ON-OFF valve connected to a hydraulic tank. The hydraulic tank is modeled as a first order system. Appropriate fuzzy rules and membership functions are developed...
Integrated guidance and control laws have the potential to improve the overall performance of missile systems by taking advantage of the synergism existing between the subsystems. This paper examines the proposed integrated guidance and control by using θ - D suboptimal method to the engagement of ground-fixed target. First, the basic longitudinal mathematical integrated guidance and control model...
Active disturbance rejection control is proposed to study the problems on trajectory tracking and decoupling for a two-joint system driven by pneumatic artificial muscles. Because of coupling and nonlinearity, it is very hard to obtain good performance in trajectory tracking for the two-joint system. The active disturbance rejection nonlinear controller includes a tracking differentiator, an extended...
This article describes the development of software for control of factory floor production equipment which is developed in the eScop project (Embedded systems Service-based Control for Open manufacturing and Process automation). The software is running on a network of configurable embedded devices called RTUs (Remote Terminal/Telemetry Units) which are communicating with upper layers via RESTful web...
A Fuzzy PID fusion controller is designed through continuous updating of its output scaling factor. Instead of using a unitary Fuzzy or PID algorithm, a fusion weighted summation rule bases are used in parallel which improved performance of the proposed fuzzy PID controllers compared to others. Its effectiveness is studied through simulation as well as real-time experimentation in a distributed controller...
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