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.
The visual system of an excavator simulator has been developed in this paper for training human operators and evaluating control strategies for heavy-duty hydraulic machines. In such a system, the operator controls a virtual excavator by means of a joystick while experiencing realistic operating feelings through force feedback, graphical displays, and sound effects in virtual operating environments...
Driving simulators are booming in recent years for vehicle system development, human factor study, and training of driving skills. In this paper, a new type of driving simulator is introduced with four Liquid Crystal Displays (LCDs) placed at the corresponding widows position in the driving cab, instead of using commonly front or rear multiple projector for the projection solution. In such a system,...
In this study we discussed automatic transmission method of vehicles utilizing fuzzy technology and composed a control unit using PLC (PLC: programmable logical controller), and verified the correctness of this method on the automotive transmission testing table. The result of the experiment showed that, using the fuzzy automatic transmission strategy, different shifting strategies would be used in...
This paper has designed hydraulic servo 6-DOF master-slave manipulators which are based on the structure of Stewart platform and study the force bilateral servo control algorithm. Because of the features of the common symmetry servo valve, the master manipulator canpsilat drive the hydraulic cylinders directly and pressure information of the master manipulator is needed through the controller. This...
To enhance the performance of a hydrodynamic torque converter and thoroughly understand the trait of inside flow, a numerical simulation method of internal 3D flow for the three-element centrifugal hydrodynamic torque converter was systematically researched and expatiated in this paper. First, the internal flow field of each impeller was calculated. The curves that illustrate the relationships between...
This paper has designed hydraulic servo 6-DOF master-slave manipulators which are based on the structure of Stewart platform and studied force bilateral servo control strategy. Because of the features of the common symmetry servo valve, the master manipulator can't drive the hydraulic cylinders directly and force information of the master manipulator is needed through the controller. This process...
In order to investigate the ineluctability problem of communication time delay in force tele-presence of the tele-operation robot system, a tele-presence system based on the virtual reality is setup in this paper. The system structure, geometrical noumenon modeling, and man-machine interface are introduced in detail. In the tele-operation system, graphical robot technology is used to solve the time...
A force feed back manipulator is a key device for a master-slave remote manipulation system. This paper introduces the basic principle of the manipulator with force feedback, designs the main structure of the manipulator, and introduces the modeling and simulation correlation functions of the software of Pro/E. The paper Uses the software of Pro/E to model and simulate the force feedback manipulator...
This paper designed hydraulic servo master-slave robots and studied the force bilateral servo control algorithm. Because of the features of the common symmetry servo valve, the master manipulator can't drive the actors directly and pressure information of the master manipulator is needed through the controller. This process affects the response speed of the control system. The force deviation signal...
The master-slave force feedback bilateral control system has been set up in this paper. The master manipulator is a 2-DOF system, which adopts servo valves to control hydraulic servomotors to obtain two rotational degrees, and force information is used to control the servo valve so the master manipulator hydraulic servomotor can be droved. Thus the problem that the master can't directly drive the...
This paper presents an adaptive fuzzy shift strategy of vehicle automatic shift. The shift strategy introduces throttle change as an adjustment parameter on the basis of the basic fuzzy shift strategy. It can adjust shift point according to the change of vehicle operation state and work environment. The results of simulation and test show that the adaptive fuzzy shift strategy can shorten the time...
In this paper, according to the real experiment device, we deduced the model of the electro-hydraulic servo valve and the dissymmetric hydraulic cylinder, a new RBF-PID controller was developed based on it to form a closed-loop system for the 6-DOF motion base in a tele-robotic system. To verify the validity of the design, a simulation is done. The simulation results show that RBF neural network is...
In this paper, according to the real experiment device, we deduced the model of the electro-hydraulic servo valve and the dissymmetric hydraulic cylinder, a new RBF-PID controller was developed based on it to form a closed-loop system for the 6-DOF motion base in a tele-robotic system. To verify the validity of the design, a simulation is done. The simulation results show that RBF neural network is...
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.