The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A nonlinear robust adaptive control strategy is developed to force an underactuated surface vessel to globally track a reference trajectory, despite the presence of uncertain parameters and the environmental disturbances induced by wave, wind and ocean-current. The position variables cannot be defined in the body-fixed frame. Hence, the desired motion is specified in the inertial reference frame by...
Practical training in ship oil purifier systems have lots of limitations. Most of the simulation system is given priority to hardware simulation and it isn't convenient to use. It's necessary to help students to master the application of oil purifier system by designing software simulation platform. The article uses the oil purifier system of a thousands of container ship COSCO PACIFIC as the simulation...
Customer service level and cost are two elements that create corporation competitive advantage in auto industry. A model is established proving that current logistics mode-same replenishment policy to all parts have to sacrifice one when achieving another. So a distinguished replenishment policy to hub is discussed. The mode is composed of three steps. Parts classification: according to holding risk...
We proposed a robust adaptive control method for trajectory tracking of underactuated surface ship with parameters uncertainties and disturbances. Based on the diffeomorphism transformation, the new tracking variables are given. In kinematics loop, we design the reference yaw angle and the reference speed. The nonlinear adaptive controller is designed in dynamics loop to asymptotically approach to...
In this paper, the problem of linear quadratic tracking with infinite time-invariant is discussed. The description of matching uncertain linear system is presented and the error equation of the system is established, which can be considered as the general error dynamic system (GEDS). Hence, the tracking problem is transformed into stabilization issue. A kind of robust linear quadratic tracking controller...
To improve the bandwidth of a micro-strip antenna used in sensing moisture contents in materials, such as soil and concrete, a design method of circular double-layer micro-strip antenna is studied in this paper. The paper introduces the circular antenna structure, the algorithm for calculating resonant frequency, and the analysis of the relationship between patch size and bandwidth. Simulation results...
As a case study of the embedded system curriculum construction in Dalian Nationalities University, the troubles and the common problems in teaching embedded system courses met in national universities are analyzed and the thought, specific approaches and the achievement acquired in the construction of the embedded system curriculum are proposed to induce the common law of the embedded system curriculum...
Taking the main engine and propulsion system of the large-scale container ships as the controlled object, a type of main engine remote control simulation system is designed, using the CAN-bus and database administration technology as well as touch-screen equipments. The system is composed of ECR controls system, BCR control system, and local control system with high density of integration. It can...
Based on Focus 400 ASIC truescale image processing chip, a PC to TV scan converter with high resolution is developed in the paper. The video format conversion principle and the function struture of FS400 chip are discussed. The video convertor systemic design of hardware and software structure is proposed, and its function and operation process is given. Applying the proposed convertor in a video...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.