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This paper establishes three models of dynamic input-out economic systems with multiple delays. Uncommonly, the systems are with probably singular capital coefficient matrices which are greatly common in practical economic models. By equivalent transformation, the economic models are written as three discrete-time singular systems with multiple delays. Furthermore, three admissibility conditions are...
In this paper, an adaptive motion/force control scheme is proposed via fuzzy logic system for solving the problem of input backlash in the practical application of humanoid robot manipulation. Compared with the existing literatures ignoring input nonlinearities, an smooth backlash inverse is firstly employed to deal with the lines-segments effect from backlash nonlinearity. Secondly, a decentralized...
This paper proposes an adaptive neural control scheme to deal with unknown nonlinearities and uncertainties in the humanoid robot manipulation. The deadzone nonlinearity in the detection channel is compensated in the control scheme. Moreover, adaptive laws are constructed to solve the control difficulty from unknown manipulated objects' physical parameters. It is derived that all signals in the robotic...
Because it is hard to depict real world traces, researchers proposed some mobility models in the study of mobile ad-hoc networks. It is aware recently that some mobility models will lead to non-uniform node distribution, which decreases the credibility and validity of simulations. Many researchers reconsider the node distribution characteristic for random waypoint model and have gotten some valuable...
An aerial surveillance method is proposed for a predefined single object tracking. The algorithm takes advantage of template matching to be able to track the selected object in video sequences. The selected templates are chosen from the images by utilizing gradient operation on the Gabor Wavelet representations. The algorithm achieves the tracking task even in the cases where i) the observer is moving,...
A servo controller for redundant force is designed based on DOF shaking table. Firstly, according to the geometric position of hydraulic cylinders, the composition and decomposition matrix are achieved. Secondly, in order to reduce the coupling on shaking table, which derives from redundant force within the system, force transformation matrix is calculated. Thirdly, a three-variable controller is...
One redundant wireless bridged network is proposed to transport the measuring data and control command for the remote launch system. For the importance, the high reliability is required in the process of system design. So the redundant technology and voting approach are used to improve the reliability of system. The master-slave double wireless links are built up, when the master link broken down,...
Target tracking is one of the broad applications of underwater wireless sensor networks (UWSNs). Sensors of UWSNs are battery-powered and it is impracticable to replace the batteries when exhausted. That means the batteries life affecting the lifetime of whole networks. So, it is worth reducing the energy consumption on the premise of satisfactory tracking accuracy. This paper proposes an adaptive...
Aquatic product safety assessment is a hot and hard problem in the research field which is one of the important contents in food safety supervision and management, and is composed of all kinds of assessment indexes which are not only dependent, but also independent. To deal with it, a new method was proposed by using core attributes, discernable matrix and so on. Attribute reduction of rough sets...
There exist some issues in wireless transmission like low efficiency, short transmission distance and so on. The transmission distance of traditional inductive wireless transmission system is in mm level. For electromagnetic radiant wireless transmission system is transmitted through radiation, the transmission efficiency is very low. The majority of research on wireless power transmission system...
The direct heuristic dynamic programming (HDP) is used to handle the optimal tracking control for the Henon Mapping chaotic system. The fuzzy logic system (FLS) is applied to measure the long-term utility function. Lyapunov analysis approach is utilized to assure the stability of the chaotic system. Results have proven that the tracking error, the adaptation law and the control input of the system...
This paper investigates an adaptive quantization strategy for networked control systems (NCSs) under an event-triggered control method. Considering the network random delay, event-triggering control method and adaptive quantization, a new type of model of NCS is first built. Specifically, the quantizer is characterized by a sector bound method, which can adaptively adjust the quantization density...
An adaptive ant colony algorithm is proposed to overcome the premature convergence problem in the conventional ant colony algorithm. The adaptive ant colony is composed of three groups of ants: ordinary ants, abnormal ants and random ants. Each ordinary ant searches the path with the high concentration pheromone at the high probability, each abnormal ant searches the path with the high concentration...
In practice, robot systems are usually required to hold uncertain load whose mass may change around a certain value. In this paper, the stability of the conventional model-based Computed-Torque Control(CTC) scheme for delta robots with uncertain load is investigated. Moreover a compensation control scheme is proposed to enhance the robustness of the conventional CTC scheme. The overall control is...
In this paper, the problems of finite-time stability for both discrete-time and continuous-time switched linear systems are studied. Largest region function strategy is adopted to design the switching logic, i.e., state-dependent switching rule, which is different from the existing approach that is based on time-dependent switching strategy. Some sufficient conditions are provided for finite-time...
This paper studies the active noise control technology. The S-LMS algorithm is proposed to solve the issue of the main-square-error with the variety of the useful power of the signal linearly. The parameter changes the step size of the weight vectors for the adaptive filter according to the output power of the given system. Then the S-CLMS algorithm is considered to improve adaptive filter performance...
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