Mohamad Reza Shahabian Alashti, M. Daliri, B. Jamei
{"title":"Automatic ROI Detection in Lumbar Spine MRI","authors":"Mohamad Reza Shahabian Alashti, M. Daliri, B. Jamei","doi":"10.1109/ICROM.2018.8657505","DOIUrl":"https://doi.org/10.1109/ICROM.2018.8657505","url":null,"abstract":"Low back pain (LBP) is one of the most common diseases affecting a large number of people. Diagnosis and treatment of LBP require quick, accurate imaging methods. Magnetic resonance imaging (MRI) is effective in distinguishing between vertebra, intervertebral disc and spinal cord, and thus is used frequently in spinal cord injury (SCI) diagnosis. This paper proposes a fully automated approach to detecting region of interest (ROI) using T2-weighted MRI images. Our dataset included the cases of 100 patients who suffered from LBP. In total, 2000 axial and 1200 sagittal ROI were marked in the Lumbar spine. Extracted ROIs were used in the cascade classifier learner. In this method, ROI detection consists of two processes. First the ROIs are specified using the cascade classifier, and then via a process, non-regions of interest (NROIs) are discarded. Histogram of Oriented Gradient (HOG) was used as the feature descriptor in each stage of the Cascade classifier. This method does not require background knowledge of input images and it is reliable regardless of the images size, contrast and clinical abnormally of cases. The quantitative and qualitative evaluation results of the proposed ROI detector were 83% and above 94%, respectively.","PeriodicalId":383818,"journal":{"name":"2018 6th RSI International Conference on Robotics and Mechatronics (IcRoM)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134099851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analyzing Human-Robot Interaction Using Machine Vision for Autism screening","authors":"M. Moghadas, H. Moradi","doi":"10.1109/ICROM.2018.8657569","DOIUrl":"https://doi.org/10.1109/ICROM.2018.8657569","url":null,"abstract":"In this paper, a vision-based approach is proposed to analyze the Human Robot Interaction (HRI) and extract features that can be used to distinguish between children with autism and Typically Developed (TD) children. The algorithm has been tested on the interaction of a set of children with autism and TD children with a parrot-like robot. For each subject, 190 seconds of interaction was recorded, and tracking algorithms were used to determine the position of each child with respect to the robot. Then, features were extracted and Gaussian SVM was used to distinguish between TD and children with autism reaching 81.3% accuracy.","PeriodicalId":383818,"journal":{"name":"2018 6th RSI International Conference on Robotics and Mechatronics (IcRoM)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132783195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design, Fabrication, and Test of a Low-Cost MEMS-Based Sun Sensor","authors":"Jamal Addin Bahrampoor, A. Naghash","doi":"10.1109/ICROM.2018.8657499","DOIUrl":"https://doi.org/10.1109/ICROM.2018.8657499","url":null,"abstract":"Based on outstanding characteristics of MEMS technology, modern space missions are looking for putting it into practice. Sun sensors are key components in the Attitude Determination and Control Subsystem (ADCS) of spacecraft and satellites. This system requires high precision sensors for controlling the orientation of the vehicle in the desired direction and this can be done by means of a great source of energy, the sun. Focusing on a simple and low-cost fabrication approach the detector has been designed for a field of view (FoV) of ±70°. The working principle of designed sensor is based on differences of currents generated in sensing layers. For having a p-n junction the silicon was doped by phosphorus in 850°C by POCL3 in a container that Ar passes through it on p-type silicon. Afterward, the ITO contacts are deposited by flow of Ar with rate of 200 sccm for about 40 min. By considering geometrical aspects, the detector was developed by placing three MEMS chips, based on a specified lay-out, close to each other. In the maximum FoV the output voltage of the sensor was shown to be 2V.","PeriodicalId":383818,"journal":{"name":"2018 6th RSI International Conference on Robotics and Mechatronics (IcRoM)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123476266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Robust Adaptive H∞ Control for Attitude Control of a Quadrotor","authors":"Sadra Borji Monfared, A. Kalhor, M. A. Atashgah","doi":"10.1109/ICROM.2018.8657497","DOIUrl":"https://doi.org/10.1109/ICROM.2018.8657497","url":null,"abstract":"This paper proposes a new concept of adaptive robust H∞ control strategy for attitude control of a quadrotor flying robot. The system modeling is obtained by Euler-Lagrange formulation. New proposed control system which is developed based on nonlinear H∞ has a promising performance in terms of stabilization even in the presence of external disturbance, parametric uncertainties and unmodeled dynamics. Finally, in order to eliminate the effects of parametric uncertainties and external disturbance, parameters estimation is used to real time estimating of moment inertia parameters and wind. The parameter estimation is based on adaption rules of nonlinear H∞ which feeds the estimates to linear parameters and closed loop stability was shown by Lyapunov stability theory.","PeriodicalId":383818,"journal":{"name":"2018 6th RSI International Conference on Robotics and Mechatronics (IcRoM)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125972791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Omid Mahdizadeh, Afshin Zeinaddini Meymand, M. Mollahossein, S. Moosavian
{"title":"Kinematics and Dynamics Modeling of Spherical Parallel Manipulator","authors":"Omid Mahdizadeh, Afshin Zeinaddini Meymand, M. Mollahossein, S. Moosavian","doi":"10.1109/ICROM.2018.8657504","DOIUrl":"https://doi.org/10.1109/ICROM.2018.8657504","url":null,"abstract":"Spherical parallel manipulators have been proposed for accurate and fast performance. In this paper, kinematics and dynamics of a spherical three degrees-of-freedom parallel manipulator are studied. First, both direct and inverse kinematics are solved by using a new geometric approach and defining a new appropriate set of coordinates. Then, based on the derived kinematics equations and Jacobian matrices of links, according to Lagrange method, the explicit dynamics formulation of the manipulator is developed. The obtained dynamics has been verified by using MSC.ADAMS and MATLAB Software, simultaneously. This explicit verified model is highly important to design and implement various model based control algorithms. So, a Fuzzy Adaptive PID controller is designed to show the controller’s operation on the manipulator. Discussing the obtained results reveal the merits and importance of the proposed modeling.","PeriodicalId":383818,"journal":{"name":"2018 6th RSI International Conference on Robotics and Mechatronics (IcRoM)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126176248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hamidreza Kolbari, Alireza Ahmadi, M. Bahrami, Farzam Janati
{"title":"Impedance Estimation and Motion Control of a Pendulum-Driven Spherical Robot","authors":"Hamidreza Kolbari, Alireza Ahmadi, M. Bahrami, Farzam Janati","doi":"10.1109/ICROM.2018.8657621","DOIUrl":"https://doi.org/10.1109/ICROM.2018.8657621","url":null,"abstract":"Spherical robot due to its special attributes such as maneuverability, omnidirectional movement, and silent movement has employed in the robotic fields instead of using legged and wheeled robots. In spite of the fact that several mechanisms are used to design such robots, pendulum driven is commonly utilized because of its simplicity. In this paper, a spherical robot equipped with a pendulum - driven is implemented. Two ways of control are discussed. At first, the robot is controlled manually by using smartphone remotely. In another strategy, schemes of control are designed to guarantee the trajectory tracking and stability of the robot autonomously. The former strategy is divided into two plans. At first, the mathematical dynamics model of the robot based on the Lagrangian method is proposed. As well as, the transform functions between the driving motors and angular velocities are derived experimentally. PID control is employed to ensure the trajectory tracking of the robot in both strategies. Experimental results prove the effectiveness of the transform function compared to the mathematical dynamic model.","PeriodicalId":383818,"journal":{"name":"2018 6th RSI International Conference on Robotics and Mechatronics (IcRoM)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127193698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ramin Mersi, Sina Vali, Morteza Shahamiri Haghighi, G. Abbasnejad, M. T. Masouleh
{"title":"Design and Control of a Suspended Cable-Driven Parallel Robot with Four Cables","authors":"Ramin Mersi, Sina Vali, Morteza Shahamiri Haghighi, G. Abbasnejad, M. T. Masouleh","doi":"10.1109/ICROM.2018.8657534","DOIUrl":"https://doi.org/10.1109/ICROM.2018.8657534","url":null,"abstract":"This paper addresses design and control of a new suspended under-constrained cable-driven parallel robot with four cables. In order to improve the estimation of the cable lengths, an auxiliary roller screw mechanism is utilized to move the winch linearly for proper cable coiling on one layer. Also, for the sake of obtaining the pose of the robot in real-time, an angular rate sensor is embedded on the end-effector. The collected data from the angular rate sensor is used to make equivalent the solution of the forward geometric-static problem to the solution of linear system of equations. The foregoing reduced system can be readily solved and leads to the pose of the moving platform in real-time which is a definite asset in control. Moreover, kinematic problem of the cable-driven parallel robot is provided and a new method for obtaining the forward geometric-static problem is proposed.","PeriodicalId":383818,"journal":{"name":"2018 6th RSI International Conference on Robotics and Mechatronics (IcRoM)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125548862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. A. Khalilpour, R. Khorrambakht, H. Taghirad, P. Cardou
{"title":"Wave Based Control of A Deployable Cable Driven Robot","authors":"S. A. Khalilpour, R. Khorrambakht, H. Taghirad, P. Cardou","doi":"10.1109/ICROM.2018.8657565","DOIUrl":"https://doi.org/10.1109/ICROM.2018.8657565","url":null,"abstract":"Cable driven parallel manipulator are known by their low costs and numerous applications. However despite of all research interests and developed methods they are not yet vastly used in action. The reason for this, is their limiting requirements for accurate assembly and installation process. The main goal of this paper is to propose a suitable control method by which the robot could appropriately be controlled, requiring no accurate calibrations or precise sensors. As it is well known, uncertainty in kinematics equations can lead to loose cables in redundant robots controlled through joint space controllers. In this paper a simple but very effective joint space controller is proposed that addresses the problem of loose cables by a wave based control method by employing a novel force feedback scheme. Indeed, a new conceptual framework for controlling deployable cable driven parallel manipulators is introduced by which such robots are greatly empowered at real-world scenarios. Finally, the performance of the proposed controller and its effectiveness is verified through some practical experiments showing that the proposed controller outperforms conventional cascade topologies in terms of much smoother tracking performance.","PeriodicalId":383818,"journal":{"name":"2018 6th RSI International Conference on Robotics and Mechatronics (IcRoM)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114136852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"New Approach to Center of Mass Estimation for Humanoid Robots Based on Sensor Measurements and General LIPM","authors":"H. Alai, F. A. Shirazi, A. Yousefi-Koma","doi":"10.1109/ICROM.2018.8657538","DOIUrl":"https://doi.org/10.1109/ICROM.2018.8657538","url":null,"abstract":"We present a center of mass estimator based on 6-axis force torque sensors and encoders. Acceleration of Center of Mass (CoM) is calculated using the total external forces. It is integrated to predict the CoM position and velocity. The forward kinematic equation and general Inverted Pendulum Model is used without any constraints on CoM height to update the states. The general model and equations handle changes of the height of CoM. This estimator is implemented on a simplified model of a humanoid robot in simulation. It is assumed that CoM of each link has some unknown offset errors. The estimator successfully compensates the offset errors besides the white noise in encoders and force torque sensors data, and finally estimates the CoM position on the ground.","PeriodicalId":383818,"journal":{"name":"2018 6th RSI International Conference on Robotics and Mechatronics (IcRoM)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125234381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Omid Ahmadi Khiyavi, A. Yousefi-Koma, F. A. Shirazi, S. A. Alizadeh Kolagar
{"title":"Design, Manufacturing and Motion Generation of a Shark Robot","authors":"Omid Ahmadi Khiyavi, A. Yousefi-Koma, F. A. Shirazi, S. A. Alizadeh Kolagar","doi":"10.1109/ICROM.2018.8657507","DOIUrl":"https://doi.org/10.1109/ICROM.2018.8657507","url":null,"abstract":"This paper presents the designing and manufacturing method of a shark robot. This robot has been designed to have 6 degrees of freedom (DoF) to be capable of moving in 4 directions; longitudinal, pitch, yaw, and roll. The robot has 2 main parts; one stationary part that side fins and electrical components like batteries and circuits are installed in it, and one moving part which generates the motion. The robot moves in water, so its body is made of silicon and is completely sealed to avoid water penetration.","PeriodicalId":383818,"journal":{"name":"2018 6th RSI International Conference on Robotics and Mechatronics (IcRoM)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127769874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}