Key Engineering Materials Vols. 467-469

Abstract: Voltage waveform distortion of Aeronautical Static Inverter (ASI) has a solution, which is the repetitive control technology. In this paper, have established the model of repetitive control system; have stated its principles and method of parameter design; have proved the stability of repetitive control system; have verified the validity of it in MATLAB software; finally have established its C language procedure.

Abstract: Increases in the carbon dioxide, and global warming, which came into being a low-carbon building. In fact, the city carbon emissions, 60% from building maintenance function itself, but only to 30% of the transport vehicle. More specific to the real estate industry is large power consumption. Statistics show that China's per 1 square meter of housing built, about 0.8 tons of carbon released. Not too long, there is no green low carbon content of the project probably should be eliminated, while actively planning for the development of low carbon projects and operations will become widespread.

Abstract: In this paper, we propose a new design of the feedback control of state vector for the plants with polynomial dynamics. A genetic algorithm is employed to find suitable gain, and algebraic geometric concept is used to simplify the design. Finally, an example is given to illustrate the effectiveness of the proposed method.

Abstract: We can design model following control system (MFCS) with time-delay whose internal states are bounded. Time-delay widely exists among controlled objects in computer control processes, power systems, chemical processing systems, metallurgical processing systems, environmental systems and communication systems transmission systems and other industrial production activities[1]～[5], and makes it difficult to evaluate effects of control system input signals in time, which will ineluctably deteriorate performance of the control system in automatically removing outside disturbances, and influence stability of the system. This paper discusses a design of predictive control of MFCS for the linear time-delay based on the model following control theory proposed by Okubo[6], and is thus considered to be innovative and applicable. It is confirmed on basis of a numerical example that the output signal of the control system asymptotically follows the reference model signal in the case of the existence of disturbances.

Abstract: We propose a new study of the robot control by using model following control system (MFCS). With the MFCS method [1-5], we obtain a simple input control law. The bounded property of the internal states for the control is given and the utility of this control design is guaranteed. In this paper, MFCS control techniques are applied to robot control problem, and simulations are given to illustrate the effectiveness of the proposed method.

Abstract: We propose a design of model following control system (MFCS) with time-delays. The bounded property of the internal states for the control is given and the utility of this control design is guaranteed. It is confirmed on basis of numerical examples that the output signal of the control system asymptotically follows the reference signal in the case of the existence of disturbances.

Abstract: We synthesized a self-oscillating polymer chain with a negatively charged moiety. The polymer chain caused the aggregation-disaggregation self-oscillation under the constant temperature induced by the Belousov-Zhabotinsky (BZ) reaction. In this study, we investigated the influence of temperature and the concentration of sodium bromate on the aggregation-disaggregation self-oscillation of the polymer solution (1.0 wt%) in a strongly acidic condition. As a consequence, we clarified that the life-time of the self-oscillation increased with decrease in the concentration of sodium bromate. On the other hand, the lifetime of the self-oscillation decreased with increase in temperature. In high temperature condition (48 and 60 °C), the amplitude of the self-oscillation was significantly inhomogeneous. Moreover, the frequency of the self-oscillation increased with increasing temperature. On the other hand, the frequency decreased with increase in the concentration of sodium bromate. This tendency was opposite to that in the acid-free condition and the 2.0 wt% AMPS-containing polymer solution.

Abstract: Bioprocesses are appreciated as difficult to control because their dynamic behavior is highly nonlinear and time varying, in particular, when they are operating in fed batch mode. For this kind of bioprocess where the mathematical model contains many structured and unstructured uncertainties, we try to combine different intelligent techniques based on natural syllogisms of these techniques. In order to obtain a high bioprocess productivity it is essential to accord the benefits of the classical control strategy (i.e. the analytical determination of the optimum) with the subjective bioprocess characterization (due to the human expert) in order to diminish the on line information scarcity. The research objective of this study was to develop an appropriate control method for a new complex bioprocess and to implement it on a laboratory plant. Hence, an intelligent control structure has been designed in order to produce biomass and to maximize the specific growth rate.

Abstract: In view of the inherent contradiction between mass data and real-time browsing in Highway 3D Visualization System, this paper proposes an edge folding algorithm for weighted average elevation base on vertex degrees, which will improve the model simplification effective. In the process of building a continuous LOD model, the algorithm uses mesh line to blocky process the terrain model to eliminate the adverse effects of long and narrow triangles, adopts Hoppe’s reversible progressive meshes construction algorithm to build grid-based LOD terrain model of continuous reversible, finally adopts LOD scheduling algorithm based on viewpoint, realizing multi-resolution terrain display of continuous reversible.

Abstract: Based on the computer vision technology and the digital image processing technology, the video moving vehicle detection and tracking algorithm is made to be on research; with the base of each characters of the background difference method and the inter-frame difference method, a revised comprehensive difference method is used, and combined with the special traffic video background, a background updating method revised from Surrender Algorithm is proposed. The moving object tracking algorithm based on matching matrix is explained to focus on the problem of failure of tracking moving objects when each of them are kept out. The application of software demonstrates that the method cited in this paper proves to be right and feasible and meet the need of highway operation monitor.