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 four hydraulic cylinders pressing equipment is commonly used in superplastic forming equipment and other similar applications. But it hardly to arrange the reaction force in the geometry center of four cylinder which makes the depress equipment unbalance and very harmful for these equipment. In this paper the coupling between four cylinders is considered and the linear model of four-cylinders...
In this paper the development of a self-adjusting, robust sliding mode controller in combination with a nominal-feedback feedforward-control is presented. The proposed control-scheme is applied to two different tasks: the speed control of a Permanent-Magnet-DC-drive with input-dependent parameters and the load-control of a Permanent-Magnet Synchronous Machine. In both cases the validity of the proposed...
When flying an aircraft, the force feel of the control column provides the pilot with important information about the state of the aircraft. In a flight simulator this force feel needs to be simulated, which is the task of the control loading system. A hydraulic Control Loading System (CLS) was developed and installed on our flight simulator earlier days, but the CLS contains instabilities for some...
This paper deals with the establishment of the exact mathematical model for describing the electro-hydraulic load system which is applied to the earth-experiment of the hydromechanical servomechanism (hydraulic assistor) for the helicopter pitch adjusting. Based on the working principle analysis of the electro-hydraulic load system, the accurate mathematical model of electric-hydraulic loading system...
An adaptive controller for nonlinear force loading system is designed. The inverse model building, model switching and error compensation are researched. The existence of the plant inverse model is analyzed, and then the model building based on data is presented. The finite time tracker performance index is used to switch the inverse model. Local linearity proportion control is adopted as the compensator...
The use of robots in assistive roles will be an increasingly significant application for robotics. Assistive robots need to physically interact with humans in a safe manner. We propose the use of inflatable robot links as structural members instead of traditional rigid links. We believe such links would allow the development of inherently safe robots. For these robots to be useful in tasks such as...
The hybrid control method is proposed to the helicopter rotor concordant load system. Based on establishing the mathematical model of concordant load system, a new extraneous force decoupling control method is proposed. In our approach, the load actuator piston position is used as input signal of decoupling controller. Meanwhile, a new nonlinear self-tuning PID controller is also proposed, which can...
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.