The paper focuses on the design of a velocity control system which takes into consideration the knowledge of the predicted inclinations of the road along the track of the vehicle. By using this velocity control it is ...
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A main step in service diagnosis is the selection of dedicated tests for a faulty automotive system in order to decide in which component a fault has occurred. This paper develops a test selection approach that is bas...
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A main step in service diagnosis is the selection of dedicated tests for a faulty automotive system in order to decide in which component a fault has occurred. This paper develops a test selection approach that is based on structural models of the system. A structure graph represents the physical couplings of the input, state, and output signals. The test selection method aims at finding operating points in which faults distinguish with respect to their physical input-state-output paths through the components and, thus, can be isolated by steering the system into these operating points. The main ideas are illustrated by a spark ignition engine with the faults of a leakage in the intake manifold and damaged intake valves to be distinguished.
We present a sparse Bayesian reconstruction method based on multiple types of a priori information for multispectral bioluminescence tomography (BLT). In the Bayesian approach, five kinds of a priori information are i...
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The active fault tolerant control is investigated for a class of nonlinear systems with actuator faults and magnitude constraint in the control input. The abrupt faults in the gain matrix of actuators are modeled to b...
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The active fault tolerant control is investigated for a class of nonlinear systems with actuator faults and magnitude constraint in the control input. The abrupt faults in the gain matrix of actuators are modeled to be the constant type. Based on the Lyapunov theory and linear matrix inequality technique, the iterative design method for reconfigurable fault tolerant controller is proposed by using static output feedback strategy, such that the corresponding closed-loop system is robust stable with the given magnitude constraints in the control input. Meanwhile, other control performances, such as disturbance rejection and quadratic cost function, are optimized to approach the performance in normal case as soon as possible. The simulation results of numerical example indicate the validity of the proposed fault tolerant control strategy.
Bio-inspired intelligence is in the spotlight in the field of international artificial intelligence,and unmanned combat aerial vehicle(UCAV),owing to its potential to perform dangerous,repetitive tasks in remote and h...
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Bio-inspired intelligence is in the spotlight in the field of international artificial intelligence,and unmanned combat aerial vehicle(UCAV),owing to its potential to perform dangerous,repetitive tasks in remote and hazardous,is very promising for the technological leadership of the nation and essential for improving the security of *** the basis of introduction of bioinspired intelligence and UCAV,a series of new development thoughts on UCAV control are proposed,including artificial brain based high-level autonomous control for UCAV,swarm intelligence based cooperative control for multiple UCAVs,hy-brid swarm intelligence and Bayesian network based situation assessment under complicated combating environments, bio-inspired hardware based high-level autonomous control for UCAV,and meta-heuristic intelligence based heterogeneous cooperative control for multiple UCAVs and unmanned combat ground vehicles(UCGVs).The exact realization of the proposed new development thoughts can enhance the effectiveness of combat,while provide a series of novel breakthroughs for the intelligence,integration and advancement of future UCAV systems.
The paper focuses on the design of a new adaptive cruise control which takes into consideration the knowledge of the inclinations of the road along the track of the vehicle. The controlled system incorporates the brak...
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The paper focuses on the design of a new adaptive cruise control which takes into consideration the knowledge of the inclinations of the road along the track of the vehicle. The controlled system incorporates the brake and the traction forces. By choosing the velocity of the vehicle fitting in with the inclinations of the road the number of unnecessary accelerations and brakes can be reduced, thus so can the operations of the actuators of the vehicles, i.e. the powertrain and the brake system. The longitudinal dynamics of the vehicle is formulated in a control-oriented linear model, which contains the longitudinal control force and disturbances such as the aerodynamic force, rolling resistance and road slope. If the inclination of the road surface is assumed to be known, it is considered in the calculation of the velocity tracking and the reference velocity. In the model the nonlinear properties of the predicted road inclinations are considered together with the safety requirements. The control system is designed by using LPV/ℋ ∞ control theory. The operation of the method is demonstrated through simulation examples in Matlab/Simulink and CarSim environments.
This paper presents a novel approach for speed governing of hydro-turbine by means of a sliding mode controller. For selecting a group of parameters of the sliding surface, genetic algorithm is employed to search thes...
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In this work, we consider an optimal control problem for Networked control Systems (NCS), where the loop is closed via an unreliable network. In order to inform the controller about the fates of the control packets, t...
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This paper designs a fuzzy incremental hierarchical sliding mode controller for a class of underactuated systems. By capturing the physical structure of the class, the hierarchical sliding surfaces with incremental st...
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In this paper, we analyze the identifiability properties of a Hodgkin-Huxley (HH) type voltage dependent ion channel model under voltage clamp circumstances. The elimination of the differential variables is performed,...
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In this paper, we analyze the identifiability properties of a Hodgkin-Huxley (HH) type voltage dependent ion channel model under voltage clamp circumstances. The elimination of the differential variables is performed, and the identifiability of various parameters is analyzed using the differential algebra approach and the algorithm based on the Taylor series expansion of the output. It is shown that the model is structurally non-identifiable using certain commonly applied parametrizations, and hidden dependences between physical parameters are unravelled. Using the results of the identifiability analysis, physically meaningful examples are shown when the model parameters are different but the system outputs are identical.
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