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Study of Robot system Response drive by DC motors

دراسة سرعة الاستجابة لنظام روبوت يقاد بمحركات تيار مستمر

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 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




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A lot of researches studies robot arms and the ability of controlling it to track targets which depends on the type of motors used, DC motors or servo motors. In addition to response time that DC and motor can give as a physical structure. Robots consists of number of junctions built of solid materials (robot arms( connected together by motors and the total structure lets the robot to move, these robots can be used in places that humans cannot act inside it or in places which we need a lot of repeated actions. This search aimes to study the robot arm movement by controlling the motors and its response to a drawn line using a PID controller to achive the most accuracy by using the distrubushion constants of the camera lens which used by the robot to see. All the cameras need to be calibrated and the constants used to move the robot in X,Y,Z.

References used
Bob Williams, williar,-An Introduction to Robotics.Ohio University,2016
John J. Craig- Introduction to Robotics Mechanics and Control Third Edition 2005
John J. CraigSecond Editin-Introduction To Robotics , Mechanics and control, 1990
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This research aims to study the effect of rotation speed and armature current density or load current of micro dc motors on the commutation current, especially on the final phase where electrical spark occurs on the motor collector. A relationship of how electrical spark time and density or energy is related to rotation speed and armature current density, will be deduced. This research was supported by special laboratory experiments, and ended up with useful scientific results.
محرك الخطوة من أكثر المحركات المستخدمة في أنظمة التحكم عندما يراد التحكم بالحركة و الموضع معاً، و لعل المحرك الخطوي الهجين يعتبر من أهم هذه الأنواع ، و موضوع أنظمة التحكم الخاصة بعمل هذا النوع من المحركات يعتبر مهماً جداً خاصة مع استخدام مفهوم الأ تمتة في هذه الأيام، لذا فإن تصميم نموذجٍ لنظام التحكم و محاكاته باستخدام برنامج MATLAB يعد تطبيقاً عملياً لنظام التحكم بعمل المحرك الخطوي الهجين، و دراسة العوامل المؤثرة عليه ببساطة و سهولة و بتوفير للوقت و الجهد و الكلفة إضافة لإمكانية التأكد من صحة النتائج و دقتها.
In this paper, the structure and operation principle of BLDC motors are introduced, a simple mathematical model is figured, a speed PI controller was designed, a simulation model to control 3-phase BLDC motor speed in Matlab/Simulink was built, an analytical study of the Speed, Current, Electrical Torque, Back-Emf waveforms, during no load was done, the effect of adding external load in different load torque values are studied. The effect of adding external load torque during operation is studied also.
The theoretical section presents the principle of operation of an on-site control circuit using a DC motor, as the continuous motor is the main element that rotates at certain angle and thus moves the action to the gearbox which reduces the engin e's rotational speed to control the variable resistance which adjusts the voltage Vb to be equal to the voltage Vr The Practical section displays the results.
Robot navigation is challenging for building intelligence mobile robots. To find Proper possible path from starting point to target point, that reduces time and distance, avoiding collision with obstacles is a current potential research area. Rapid ly exploring random trees (RRTs)is considered as one of the fastest methods to find solutions. Moreover, this algorithm is computationally efficient; therefore, it can be used in multidimensional environments. This paper reviews the RRT algorithm, and provides application of path planning to differential robot in two different workspaces using Virtual Robot Experimentation Platform) V-REP(simulator. This research clarifies the algorithm’s ability to find suitable path in relatively short time, and demonstrated the ability of V-rep to model and 3D simulate of mobile robot’s movement efficiently and smoothly.
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