Modeling of the youBot in a serial link structure using twists and wrenches in a bond graph

We present a walk-through tutorial on the modeling of a complex robotic system, like the newly developed desktop mobile manipulator youBot developed by KUKA[5, 4]. The tutorial shows the design of models for typical robotic elements, done in a reusable object-oriented style. We employ an energy-based approach for modeling and its bondgraph notation to ensure encapsulation of functionality, extendability and reusability of each element of the model. The kinematic representation of mechanical elements is captured using screw theory. The modeling process is explained in two steps: first submodels of separate components are elaborated and next the model is constructed from these components

Creating Interaction Scenarios With a New Graphical User Interface

The field of human-centered computing has known a major progress these past few years. It is admitted that this field is multidisciplinary and that the human is the core of the system. It shows two matters of concern: multidisciplinary and human. The first one reveals that each discipline plays an important role in the global research and that the collaboration between everyone is needed. The second one explains that a growing number of researches aims at making the human commitment degree increase by giving him/her a decisive role in the human-machine interaction. This paper focuses on these both concerns and presents MICE (Machines Interaction Control in their Environment) which is a system where the human is the one who makes the decisions to manage the interaction with the machines. In an ambient context, the human can decide of objects actions by creating interaction scenarios with a new visual programming language: scenL.Comment: 5th International Workshop on Intelligent Interfaces for Human-Computer Interaction, Palerme : Italy (2012

Input shaping and PID controller for rotary crane

The rotary cranes are widely used in common industrial structures such as construction sites and automotive tracks to transfer loads and materials. The rotary crane controlling process is difficult without method because the motion expected to be faster. One of the current problems in industry and building construction is that rotary cranes became larger and higher. So they need to be faster to achieve acceptable transfer times. But unfortunately, rotary cranes with large structures that are moving at high speed are always associated undesirable payload oscillations resulting from the system dynamics. The purpose of controlling the rotary crane is transporting the load faster without causing any excessive swing at the final position. Rotary cranes have very strong structures in order to lift heavy payloads. The oscillations of the loads must be reduced to prevent hazards for people and equipment in the work place. In this work, two types of controllers are studied which is input shaping and PID controller. The input shaping controller and PID controller is developed to control the horizontal motion of pendulum and arm position in rotary cranes to reduce the sway angle of the rope to its set point during the transportation process and time response specification. It is developed to control the sway of load to correcting the radial and rotational motion of cranes and the oscillation damping PID controllers for damping the oscillation angles of the loads. LabVIEW and MATLAB software was used to develop input shaping and Proportional Integral Derivative (PID) controller and to simulate the system response. The simulation results demonstrate the effectiveness of the proposed method

Adoption and Utilization of Drones for Advanced Precision Farming: A Review

India is the considerable maker of agricultural products but has very low agricultural productivity. Productivity of farm needs to be improved in a way that farmers can earn more profit from the same piece of land with less labor. Advanced precision farming may able to do it. Advanced precision farming technologies include use of drones, unmanned aerial vehicles (UAV's), Airborne Digital Photography (ADP) etc. UAV’s are controlled remotely by telemetry, where the operator keeps up visual contact with the aircraft using GPS and inertial guidance. The initial uses in agriculture have been for remote sensing, with a prominence on the visual investigation of crop yield or farm field conditions and for tracking resources like machinery, workers or product. This paper presents a review on utilization of precision farming using aerial based system such as drones or UAV’s for sustainability farming

PERANCANGAN SISTEM KONTROL VIBRASI PADA ROBOT SINGLE LINK FLEXIBLE JOINT MANIPULATOR DENGAN PID TUNING GENETIC ALGORITHM

Abstrak Single Link Flexible Joint Manipulator merupakan salah satu robot industri yang sering digunakan untuk berbagai macam produksi. Penggunaan dari Single Link Flexible Joint Manipulator sangat diperlukan karena memudahkan barang yang hendak didistribusikan ke beberapa tempat yang telah ditentukan. Umumnya flexible link memiliki beban yang lebih ringan untuk mencapai respon yang cepat dengan kebutuhan energi yang rendah serta hanya membutuhkan aktuator yang lebih kecil. Namun, sering terjadi masalah pada vibrasi pada manipulator sehingga terjadi kurang akurat pada titik akhir. Ketidakakuratan ini disebabkan karena adanya vibrasi dan defleksi statis pada interval waktu tertentu dengan gerakan bolak balik. Pada penelitian ini menggunakan PID tuning Genetic Algorithms untuk mengatasi masalah vibrasi pada manipulator. Setelah dilakukan penelitian, didapatkan parameter PID menggunakan metode Genetic Algorithm yaitu Kp = 4,728 ; Ki = 4,91 ; Kd = 0,857. Setelah menentukan parameter PID tersebut dan diterapkan pada sistem, didapatkan respon yang baik dengan tidak adanya overshoot pada sistem. Respon paling baik terdapat pada setpoint 5 dengan Time sampling (Ts) sebesar 0.7895s, Time delay (Td) sebesar 0.1858s, dan Time rise (Tr) sebesar 0,825s. Walaupun pada respon open loop memiliki Time sampling dan Time delay yang lebih baik, namun respon open loop masih memiliki overshoot sedangkan pada respon close loop tidak mengalami overshoot. Kata Kunci : Genetic Algorithm, Single Link Flexible Joint Manipulator, PID, Vibrasi. Abstract Single Link Flexible Joint Manipulator is one of the industrial robots that are often used for various kinds of production. The use of a Single Link Flexible Joint Manipulator is needed because it makes it easy to distribute goods from one place to another. Generally, flexible links have a lighter burden to achieve fast responses with low energy requirements and only requires smaller actuators. However, there is often a problem with vibrations in the manipulator so that it occurs less accurately at the end point. This inaccuracy is caused by static vibrations and deflections that are alternating movements within a certain time interval In this study using PID tuning Genetic Algorithms to overcome the problem of vibration in the manipulator. After doing research, PID parameters obtained using the Genetic Algorithm method, namely Kp = 4,728; Ki = 4.91; Kd = 0.857. After determining the PID parameters and applied to the system, a good response is obtained in the absence of overshoot on the system. The best response is at setpoint 5 with Time sampling (Ts) of 0.7895s, Time delay (Td) of 0.1858s, and Time rise (Tr) of 0.825s. Even though the open loop response has better Time sampling and Time delay, the open loop response still has overshoot while the close loop response does not experience overshoot. Keywords : Genetic Algorithm, PID, Single Link Flexible Joint Manipulator, Vibras