{"title":"Velocity tracking control of AUVs in horizontal motion","authors":"P. Herman, W. Kowalczyk","doi":"10.1109/SYSTOL.2016.7739736","DOIUrl":"https://doi.org/10.1109/SYSTOL.2016.7739736","url":null,"abstract":"In the paper the problem of velocity tracking control of Autonomous Underwater Vehicles (AUVs) in horizontal plane is considered. The proposed approach is based on transformed equations of motion and it allows one to apply the dynamical couplings in the control gain matrix. As a result, the dynamics of the vehicle is included into the control process what leads to fast system response. The stability of the system with the controller is done using the Lyapunov method. Effectiveness of the control algorithm is validated via simulations on a 3 DOF underwater marine vehicle model.","PeriodicalId":223249,"journal":{"name":"2016 3rd Conference on Control and Fault-Tolerant Systems (SysTol)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129497455","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}
Adrià Soldevila, Sebastian Tornil-Sin, R. M. Fernández-Cantí, J. Blesa, V. Puig
{"title":"Optimal sensor placement for classifier-based leak localization in drinking water networks","authors":"Adrià Soldevila, Sebastian Tornil-Sin, R. M. Fernández-Cantí, J. Blesa, V. Puig","doi":"10.1109/SYSTOL.2016.7739771","DOIUrl":"https://doi.org/10.1109/SYSTOL.2016.7739771","url":null,"abstract":"This paper presents a sensor placement method for classifier-based leak localization in Water Distribution Networks. The proposed approach consists in applying a Genetic Algorithm to decide the sensors to be used by a classifier (based on the k-Nearest Neighbor approach). The sensors are placed in an optimal way maximizing the accuracy of the leak localization. The results are illustrated by means of the application to the Hanoi District Metered Area and they are compared to the ones obtained by the Exhaustive Search Algorithm. A comparison with the results of a previous optimal sensor placement method is provided as well.","PeriodicalId":223249,"journal":{"name":"2016 3rd Conference on Control and Fault-Tolerant Systems (SysTol)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121488775","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":"Temporal-difference Q-learning in active fault diagnosis","authors":"Jan Škach, Ivo Punčochář, F. Lewis","doi":"10.1109/SYSTOL.2016.7739765","DOIUrl":"https://doi.org/10.1109/SYSTOL.2016.7739765","url":null,"abstract":"The paper deals with a novel design of an approximate active fault detector for discrete-time stochastic linear Markovian switching systems on the infinite-time horizon. The problem is formulated as an optimization problem with the aim to minimize a general discounted detection cost criterion. The proposed solution is inspired by approximate dynamic programming and reinforcement learning. The active fault detector is trained by a temporal-difference Q-learning algorithm with a linear parametric Q-function approximation adjusted to fit the true Q-function. The main advantage is that this approach is computationally less expensive than a temporal-difference learning with a value function.","PeriodicalId":223249,"journal":{"name":"2016 3rd Conference on Control and Fault-Tolerant Systems (SysTol)","volume":"07 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114228578","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":"A kinematic joint fault tolerant control based on relative jacobian method for dual arm manipulation systems","authors":"A. Freddi, S. Longhi, A. Monteriù, D. Ortenzi","doi":"10.1109/SYSTOL.2016.7739726","DOIUrl":"https://doi.org/10.1109/SYSTOL.2016.7739726","url":null,"abstract":"The present paper presents a fault tolerant control for dual arm manipulation systems affected by joint faults. The fault is modelled like a reduction of the maximum joint velocity due to partial torque loss of a servomotor. The system is made locally fault tolerant by exploiting its redundancy degrees via two different methods. The first method permits to reduce the manipulators' manipulability loss in case of fault occurrence, by imposing an optimal fault tolerant configuration to both manipulators; this is directly obtained from the knowledge of the Jacobian null space. The second method permits to compensate the loss of the end effectors motion using the saturation null space approach. In order to handle the dual arm system as a unique equivalent manipulator, both methods are formulated according to the relative Jacobian method. The efficiency of the proposed joint fault tolerant control is shown in a case study, where joint faults occur at different time instants.","PeriodicalId":223249,"journal":{"name":"2016 3rd Conference on Control and Fault-Tolerant Systems (SysTol)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114504421","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}
F. Fabiani, S. Grechi, Simone Della Tommasina, A. Caiti
{"title":"A NLPCA hybrid approach for AUV thrusters fault detection and isolation","authors":"F. Fabiani, S. Grechi, Simone Della Tommasina, A. Caiti","doi":"10.1109/SYSTOL.2016.7739737","DOIUrl":"https://doi.org/10.1109/SYSTOL.2016.7739737","url":null,"abstract":"The objective of this paper is to address the problem of Fault Detection and Isolation (FDI) on thrusters of an over-actuated Autonomous Underwater Vehicle (AUV) under on/off abrupt faults. The goal is pursued through Non-Linear Principal Component Analysis (NLPCA), which is the non-linear extension of the popular Principal Component Analysis (PCA). While the Fault Detection (FD) system directly exploits the model-free nature of NLPCA (data-driven approach), the Fault Isolation (FI) is achieved by properly train off-line Artificial Neural Network (ANN). The consistency and robustness of the proposed method is verified in realistic simulation.","PeriodicalId":223249,"journal":{"name":"2016 3rd Conference on Control and Fault-Tolerant Systems (SysTol)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115558774","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}
Feng Xu, Junbo Tan, Xueqian Wang, V. Puig, Houde Liu, Bin Liang, Bo Yuan
{"title":"Robust state estimation and fault detection combining unknown input observer and set-membership approach","authors":"Feng Xu, Junbo Tan, Xueqian Wang, V. Puig, Houde Liu, Bin Liang, Bo Yuan","doi":"10.1109/SYSTOL.2016.7739730","DOIUrl":"https://doi.org/10.1109/SYSTOL.2016.7739730","url":null,"abstract":"This paper aims to propose a new robust state-estimation and fault-detection method by combining the unknown input observer (UIO) and the set-membership estimator (SME). It is known that both the SUIO and the SME can be used to estimate the states of a system. The former aims to obtain a particular value by actively decoupling the effect of unknown inputs, while the latter can obtain state-estimation sets by prediction and correction based on the set theory. Instead of particular state values, the latter can obtain state-estimation sets guaranteeing to contain system states (i.e., robust state estimation). In this paper, we propose to use the framework of the UIO to actively decouple part of unknown inputs and then further employ the set-membership estimation method to estimate state sets and detect faults. The objective of the proposed method is to reduce the conservatism of robust state-estimation sets by using the UIO to remove the contribution of part of unknown inputs to the sizes of state-estimation sets. At the end of this paper, a numerical example is used to illustrate the effectiveness and advantages of the proposed approach.","PeriodicalId":223249,"journal":{"name":"2016 3rd Conference on Control and Fault-Tolerant Systems (SysTol)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123976090","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":"Sensor fault tolerance in output feedback nonlinear model predictive control","authors":"B. Knudsen, A. Alessandretti, C. Jones","doi":"10.1109/SYSTOL.2016.7739832","DOIUrl":"https://doi.org/10.1109/SYSTOL.2016.7739832","url":null,"abstract":"This paper presents an active output feedback fault-tolerant model predictive control (MPC) scheme for systems with sensor faults. The proposed control scheme actively steers the system in order to prevent loss of observability caused by a sensor fault. To this end, the standard tracking objective of the MPC controller is augmented with an observability cost term which strongly penalizes unobservable state and input trajectories. A numerical example illustrates the use of the proposed approach on a target estimation and tracking control problem with faulty sensors.","PeriodicalId":223249,"journal":{"name":"2016 3rd Conference on Control and Fault-Tolerant Systems (SysTol)","volume":"11 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132208010","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}
Abdel-Razzak Merheb, F. Bateman, H. Noura, Younes Al Younes
{"title":"Hierarchical fault-tolerant control of a quadrotor based on fault severity","authors":"Abdel-Razzak Merheb, F. Bateman, H. Noura, Younes Al Younes","doi":"10.1109/SYSTOL.2016.7739825","DOIUrl":"https://doi.org/10.1109/SYSTOL.2016.7739825","url":null,"abstract":"In this paper, a hierarchical Fault Tolerant Controller (FTC) for quadrotor aircrafts is developed. The proposed controller switches between suitable controllers according to the actuator fault severity. Low amplitude faults are tolerated using the inherent robustness of a regular Sliding Mode Controller (SMC). When fault magnitude increases, an Active FTC is activated. This controller uses the fault estimates provided by an Extended Kalman Filter (EKF) to recover the control loss. When a fault magnitude rises to dangerous values, an emergency controller is activated and the quadrotor continues its mission as a trirotor. Simulation results emphasize the robustness of the proposed controller in real environments where measurement noise and actuator faults affect severely the quadrotor.","PeriodicalId":223249,"journal":{"name":"2016 3rd Conference on Control and Fault-Tolerant Systems (SysTol)","volume":"GE-25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126566136","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}
D. García, Ramon Creus, Meritxell Minoves, X. Pardo, J. Quevedo, V. Puig
{"title":"Prognosis of quality sensors in the Barcelona drinking water network","authors":"D. García, Ramon Creus, Meritxell Minoves, X. Pardo, J. Quevedo, V. Puig","doi":"10.1109/SYSTOL.2016.7739790","DOIUrl":"https://doi.org/10.1109/SYSTOL.2016.7739790","url":null,"abstract":"One of the most important areas of the water utilities is the water quality management. This area is responsible of guaranteeing safety in the water supply to the citizens. The strategy to guarantee the safety is based on two principal elements: disinfection and monitoring. Disinfection techniques, such as chlorination, allow to prevent the growing of microorganisms present in the water. Moreover, in order to guarantee this safety in the whole water network and avoid any unexpected event, on-line sensors are required to monitor a set of quality parameters. The whole process is based on the assumption that the information retrieved from quality sensors is totally reliable. But due to the complexity of the calibration and maintenance of these chemical sensors, several factors affect the accuracy of the raw data collected. Consequently, any decision based on this raw data might be based on a non solid base. Therefore, this work presents a data analytics approach consisting in two modules: fault diagnosis and prognosis. The fault diagnosis module first discerns if a sensor is detecting a real change on water quality parameters or actually is providing inconsistent information due to some malfunction. The prognosis module aims to predict the fault instant due to a slow degradation, which is very common in chlorine sensors. This approach allows to apply a predictive maintenance strategy reducing corrective actions. The proposed methodology has been satisfactorily tested on the Barcelona Drinking Water Network.","PeriodicalId":223249,"journal":{"name":"2016 3rd Conference on Control and Fault-Tolerant Systems (SysTol)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125119956","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":"A set based approach for SFDI on small commercial aircraft","authors":"M. Mattei, Luciano Ollio, V. Scordamaglia","doi":"10.1109/SYSTOL.2016.7739827","DOIUrl":"https://doi.org/10.1109/SYSTOL.2016.7739827","url":null,"abstract":"The problem of detecting and isolating faults on duplex sensor architecture in a small commercial aircraft is considered. The use of a Set-Based approach involving a bank of consistency signal generators is proposed. In particular, by exploiting the knowledge of dynamic relations between command inputs and sensed variables in discrete time, sensor measurements accuracy has been estimated also in the presence of bounded disturbances and model uncertainties. Then, a Health Measurement Voting Supervisor detects and isolates faulty sensor. Numerical simulations involving a nonlinear aircraft mathematical model subject to atmospheric disturbance and sensor noise are performed in order to show the practical applicability of the proposed technique.","PeriodicalId":223249,"journal":{"name":"2016 3rd Conference on Control and Fault-Tolerant Systems (SysTol)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123489432","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}