International Journal of System Control and Information Processing (3 papers in press)

Regular Issues

• A joint data-driven process monitoring method using knowledge propagation based on manifold clustering  
  by Chuanfang Zhang, Kaixiang Peng, Jie Dong 
  Abstract: Compared with existing process monitoring approaches, a joint data-driven method using knowledge propagation based on manifold clustering is proposed for fault detection, which utilizes historical data containing knowledge information (labeled data). The main contributions of this work are as follows: (1) Two transformation matrices are derived based on manifold learning and clustering method. (2) Different from conventional data-driven fault detection method, knowledge propagation based on manifold clustering is used to extract the features of unlabeled data. (3) According to extracted features, the fault detection approach is proposed. The proposed method is applied to Tennessee Eastman (TE) process. The simulation results indicate that the proposed monitoring scheme can effectively monitor the working conditions of the process and identify fault types.
  Keywords: Joint data-driven; Process monitoring; Fault detection; Manifold clustering; Knowledge propagation.
  
  
• Parameter optimization research for hydraulic turbine regulating system based on CGABC algorithm  
  by Xiaoxia Tan, Jing Chen, Gonggui Chen 
  Abstract: Artificial bee colony (ABC) algorithm is regularly taken in the parameter optimization of the hydraulic turbine regulating system (HTRS). The chaotic and global ABC (CGABC) algorithm is proposed to overcome the slow convergence speed and low convergence precision that existed in standard ABC algorithm. Among them, global optimal is used to enhance the global exploration ability, and chaos optimization is adopted to increase the diversity of bee colony. The simulation results show that compared with fuzzy strategy, ZN, DE and ABC algorithm, the proposed CGABC algorithm significantly improves the dynamic transition process of HTRS. Simultaneously, the simulation experiment is carried out on HTRS with different governor parameters and controlled parameters when it is under the frequency and load disturbance condition. The results show that the dynamic characteristics and robustness is determined by the parameter selection, and the appropriate combination of parameters allows HTRS to achieve optimal dynamic performance and robustness.
  Keywords: Hydraulic turbine regulating system; CGABC algorithm; parameter optimization; frequency and load disturbance condition; dynamic performance; robustness.
  
  
• Bearing-based formation maneuvering control of multi-agent systems with constant communication delays  
  by Jianing Zhao, Xiao Yu 
  Abstract: In this article, the multi-agent formation maneuvering control problem with constant communication delays using a bearing-based approach is studied. The interaction topology underlying the agents is described by a combination of a directed graph and an undirected graph. The dynamic leaders move with time-varying velocities, and the followers modeled as double-integrators aim to track the leaders' motion and form a bearing-defined moving desired formation. The translational and scaling formation maneuvering is steered by the leaders' motion. A dynamic controller for each follower is developed based on its position, velocity, its neighbors' position, velocity, acceleration, and the bearing constraints defining a desired formation. The motion information of neighbors is obtained via communication, and the communication delay is taken into account. Then a rigorous proof is provided to show that the tracking errors of the neutral-type system driven by the bearing-based controller are globally uniformly ultimately bounded. At last, simulation results in both two-dimensional and three-dimensional spaces are presented to illustrate the effectiveness.
  Keywords: Bearing-based Formation Control; Tracking; Communication Delays.