A Substractive Clustering Based Fuzzy Hybrid Reference Control Design for Transient Response Improvement of PID Controller

The well known PID controller has inherent limitations in fulfilling simultaneously the conflicting control design objectives. Parameters of the tuned PID controller should trade off the requirement of tracking set-point performances, disturbance rejection and stability robustness. Combination of hybrid reference control (HRC) with PID controller results in the transient response performances can be independently achieved without deteriorating the disturbance rejection properties and the stability robustness requirement. This paper proposes a fuzzy based HRC where the membership functions of the fuzzy logic system are obtained by using a substractive clustering technique. The proposed method guarantees the transient response performances satisfaction while preserving the stability robustness of the closed loop system controlled by the PID controller with effective and systematic procedures in designing the fuzzy hybrid reference control system

A Substractive Clustering Based Fuzzy Hybrid Reference Control Design for Transient Response Improvement of PID Controller

The  well  known  PID  controller  has  inherent  limitations  in  fulfilling simultaneously the conflicting control design objectives.  Parameters of the tuned PID  controller  should  trade  off  the  requirement  of  tracking  set-point performances,  disturbance  rejection  and  stability  robustness.  Combination  of hybrid  reference  control  (HRC)  with  PID  controller  results  in  the  transient response  performances can be independently achieved without deteriorating the disturbance  rejection  properties  and  the  stability  robustness  requirement.  This paper proposes a fuzzy based HRC where the membership functions of the fuzzy logic  system  are  obtained  by  using  a  substractive  clustering  technique.  The proposed  method  guarantees  the  transient  response  performances  satisfaction while preserving the stability robustness of the closed loop system controlled by the  PID  controller  with  effective  and  systematic  procedures  in  designing  the fuzzy hybrid reference control system

Fuzzy PD control of an optically guided long reach robot

This thesis describes the investigation and development of a fuzzy controller for a manipulator with a single flexible link. The novelty of this research is due to the fact that the controller devised is suitable for flexible link manipulators with a round cross section. Previous research has concentrated on control of flexible slender structures that are relatively easier to model as the vibration effects of torsion can be ignored. Further novelty arises due to the fact that this is the first instance of the application of fuzzy control in the optical Tip Feedback Sensor (TFS) based configuration. A design methodology has been investigated to develop a fuzzy controller suitable for application in a safety critical environment such as the nuclear industry. This methodology provides justification for all the parameters of the fuzzy controller including membership fUllctions, inference and defuzzification techniques and the operators used in the algorithm. Using the novel modified phase plane method investigated in this thesis, it is shown that the derivation of complete, consistent and non-interactive rules can be achieved. This methodology was successfully applied to the derivation of fuzzy rules even when the arm was subjected to different payloads. The design approach, that targeted real-time embedded control applicat.ions from the outset, results in a controller implementation that is suitable for cheaper CPU constrained and memory challenged embedded processors. The controller comprises of a fuzzy supervisor that is used to alter the derivative term of a linear classical Proportional + Derivative (PD) controller. The derivative term is updated in relation to the measured tip error and its derivative obtained through the TFS based configuration. It is shown that by adding 'intelligence' to the control loop in this way, the performance envelope of the classical controller can be enhanced. A 128% increase in payload, 73.5% faster settling time and a reduction of steady state of over 50% is achieved using fuzzy control over its classical counterpart

Robot Manipulators

Robot manipulators are developing more in the direction of industrial robots than of human workers. Recently, the applications of robot manipulators are spreading their focus, for example Da Vinci as a medical robot, ASIMO as a humanoid robot and so on. There are many research topics within the field of robot manipulators, e.g. motion planning, cooperation with a human, and fusion with external sensors like vision, haptic and force, etc. Moreover, these include both technical problems in the industry and theoretical problems in the academic fields. This book is a collection of papers presenting the latest research issues from around the world

Simulasi Penjadwalan Posisi Panel Surya dengan menggunakan Pengendali PID (Proportional, Integral, dan Derivative)

Energy is very important for human life, but now the energy is getting decreased because of the increasing energy consumption that is not balance with the supply. In order to overcome these problem many alternative energy has been developed, one of which is solar energy. However the problem is low level of efficiency because the position of solar panels with the sun becomes very important. For optimum solar energy with optimal crossing there are two things to be aware of the elevation angle and azimuth angle. Both angles will be the control points of the solar panels, and these two angles are obtained from sensor readings of gyro sensors for elevation angles and compasses for azimuth angles. Further processed into microcontroller by using PID controller (Proportional, Integral, Derivative) to controll DC motor in solar panel position scheduling according to solar path. With the use of PID controls can improve the response on the motor thus reducing steady state errors and can provide damping effects on the oscillation system. So the schedule of solar panel position according to the path of the sun is well controlledKeywords : Solar Tracking, PID,  Solar Panel, Elevation Angle, Azimuth AngleAbstrak - Energi sangat penting bagi kehidupan manusia, namun kini energi semakin menurun karena meningkatnya konsumsi energi yang tidak seimbang dengan supply. Untuk mengatasi masalah ini banyak energi alternatif telah dikembangkan, salah satunya adalah energi surya. Namun masalahnya adalah rendahnya tingkat efisiensi karena pentingnya posisi panel surya dengan matahari. Oleh karena itu diperlukan penjadwalan posisi panel surya sesuai dengan lintasan matahari. Untuk mendapatkan energi matahari yangs esuai dengan lintasnnya secara optimal ada dua hal yang harus diperhatikan sudut elevasi dan sudut azimuth. Kedua sudut ini akan menjadi titik kontrol panel surya,  dan kedua sudut tersebut didapatkan dari pembacaan sensor yaitu sensor gyro untuk sudut elevasi dan kompas untuk sudut azimuth. Selanjutnya diolah kedalam mikrokontroller dengan menggunakan pengontrol PID (Proporsional, Integral, Derivatif) untuk mengontroll motor DC dalam penjadwalan posisi panel surya sesuai lintasan matahari. Dengan penggunaan kontrol PID dapat memperbaiki respon pada motor sehingga mengurangi error steady state dan dapat memberikan efek redaman pada sistem osilasi. Sehingga jadwal posisi panel surya sesuai lintasan matahari terkontrol dengan baikKata Kunci : Panel Surya , PID,  Sudut Elevasi, Sudut Azimu

Industrial Robotics

This book covers a wide range of topics relating to advanced industrial robotics, sensors and automation technologies. Although being highly technical and complex in nature, the papers presented in this book represent some of the latest cutting edge technologies and advancements in industrial robotics technology. This book covers topics such as networking, properties of manipulators, forward and inverse robot arm kinematics, motion path-planning, machine vision and many other practical topics too numerous to list here. The authors and editor of this book wish to inspire people, especially young ones, to get involved with robotic and mechatronic engineering technology and to develop new and exciting practical applications, perhaps using the ideas and concepts presented herein

Large space structures and systems in the space station era: A bibliography with indexes (supplement 04)

Bibliographies and abstracts are listed for 1211 reports, articles, and other documents introduced into the NASA scientific and technical information system between 1 Jul. and 30 Dec. 1991. Its purpose is to provide helpful information to the researcher, manager, and designer in technology development and mission design according to system, interactive analysis and design, structural concepts and control systems, electronics, advanced materials, assembly concepts, propulsion, and solar power satellite systems

Large space structures and systems in the space station era: A bibliography with indexes (supplement 05)

Bibliographies and abstracts are listed for 1363 reports, articles, and other documents introduced into the NASA scientific and technical information system between January 1, 1991 and July 31, 1992. Topics covered include technology development and mission design according to system, interactive analysis and design, structural and thermal analysis and design, structural concepts and control systems, electronics, advanced materials, assembly concepts, propulsion and solar power satellite systems