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The need to improve the quality of management at minimum costs, the complexity of the structure of the management object, the functions performed by it, leads to an increase in uncertainties that need to be taken into account. The use of fuzzy logic to control pumping equipment will reduce the likelihood of erroneous decisions, which will increase the life of technological equipment.
A hierarchical model is presented for the implementation of a qualitative assessment of the system's operability. The system consists of objects. Objects are characterized by their parameters. The estimation is based on the determination of the state of the parameters. The procedure is carried out by introducing intermediate scales of numerical estimation. Qualitative assessments are aligned with...
This research covers the approaches to enhancement of fuzzy controllers intellectual capabilities and improvement of their informative attributes. The features of different approaches have been determined herein which relate not only to increase in fuzzy control system input coordinates, but also to the design of the intellectual system with spacial membership functions based on the soft computing...
The results of research and application of fuzzy logic on the control systems in the «atypical» (not in technical) area are offered. This is an estimation of testing diagnosis results within control system of education quality. To increase the accuracy and reliability of estimation of results of a given study in competence-based format, it is possible to use approved approaches and methods from contiguous...
A multi-input, single-output fuzzy logic controller for anti-lock braking system is proposed, where both the slip and the vehicle velocity are considered as the inputs and are regulated equally influencing on the controller decision. The system developed provides both the minimal slip ratio to avoid the wheel blockage and the shortest braking distance of the vehicle thus mitigating the collision with...
Defined technique of control system model design with fuzzy logic controller. Presented simulation modeling results of the system with fuzzy logic controller. The input and output linguistic variables term-set accessory functions are obtained. The input and output variables correlation is determined as rule base. The visualization of the fuzzy interface surface is achieved.
This paper introduces a fuzzy inference engine for modulating the set-point of a control system to improve system transient response while retaining its target steady state operating point. Using the system's error and its rate of change, the fuzzy set-point modulator introduces a temporary change in the system set-point in order to reduce the system's settling time and damp oscillations. This paper...
This paper deals with the simulation and modelling of a Quadruple-Tank interacting system using various controllers. Quadruple-Tank is a one kind of MIMO (Multiple Input Multiple Output) system. It is not possible to determine all the parameters used in Multi variable systems. The major issues in a multivariable process are that loop interaction can arise and causes difficulty in design of feedback...
This article discusses issues of fuzzy logic actuality use for power costs researching of pumping equipment, emerging problems during the operation and also there are recommendations.
The basic aim of this paper is to checking out the on, off status of rice cooker by using fuzzy logic technique and mat lab graphical user interface technique. Then find out the trouble shooting and the solution of this by using graphical user interface technique. There are various rice cooker available in market but it has an advance technique to cooking various types of rice, according to the water...
In the control of the PEM (Proton Exchange Membrane) fuel cell, the existence of both deliberative and reactive processes that facilitate the tasks of control resulting from a wide range of operating scenarios and range of conditions it is required. The latter is essential to adjust its parameters to the multiplicity of circumstances that may occur in the operation of the PEM stack. In this context,...
In this paper, a system given in state space model has been controlled. To control this system, two different controller have been used, one of them is conventional PI controller. PI controllers are used industrial application enormously, but if the system doesn't have a mathematical model, PI controllers fail. Second controller type used in this paper is Fuzzy Logic Controllers and these controllers...
In this study, an application development board designed for education of fuzzy logic. Using this development board, students can learn how to design a fuzzy logic controller and test it. Also this development board ensures the consolidation of theoretical knowledge with various practical experiments. In this way, students' interest on the course has significantly increased. The most studied processes...
Tuning a PI controller can be quite cumbersome for the non-expert as the closed-loop control system has to meet various requirements while the influence and interaction of the two degrees of freedom are not always clear. This paper addresses the design of an iterative PI controller autotuning for drive systems with the idea of imitating a human expert. In contrast to existing concepts, a new approach...
This paper presents an adaptive and intelligent power control approach for microgrid systems in the grid-connected operation mode. The proposed critic-based adaptive control system contains a neuro-fuzzy controller and a fuzzy critic agent. The fuzzy critic agent employs a reinforcement learning algorithm based on neuro-dynamic programming. The system feedback is made available to the critic agent’s...
The work suggests some arguments to develop a general structure for a FDI system. Further a possible identifier to be included in this structure is approached. For this kind of identifier we combine a clustering stage followed by a given technique (the Wang's approach as a case study). The such obtained models are evaluated on the standard experimental Box-Jenkins' data set and some practical conclusions...
This paper discuses a linear programming method based on fuzzy rule inference for building an aeration management model for high performance management of stored grain. This model is designed and implemented with the linear programming method, which is used to complete aeration management of a number of stored grain warehouses in order to increase stored grain safety and to decrease stored grain management...
This paper proposes fuzzy logic controller algorithm for quadrotor hovering mode. The input of this fuzzy logic controller is height and height changes. Triangular membership function are used to process these inputs. The membership function output is then applied to maintain the quadrotor hover position. Simulation results show that quadrotor has zero steady state error with setting time of 15 seconds.
In order to solve the large torque ripples which exist in induction motors based on conventional direct torque control(DTC),especially at a low speed, fuzzy control theory is applied to DTC system. The speed of induction motor is estimated by Mras(Model Reference Adaptive System) method. Based on Mras and fuzzy control of speed sensorless induction direct torque control model is constructed. The stator...
For integrating, non-linear and higher order processes with dead time conventional non-fuzzy controllers usually provide poor performance than Fuzzy Logic Controllers (FLC). We propose a self-tuning fuzzy PI controller (STFPIC) for integrating and non-linear processes with dead time where a non-fuzzy gain modifying factor ?, which is defined on the sign of error and change of error of the controlled...
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