外文翻譯---振動(dòng)抑制的固定式懸臂起重機(jī)演示

1、本科畢業(yè)設(shè)計(jì)（本科畢業(yè)論文）外文文獻(xiàn)及譯文文獻(xiàn)、資料題目：Vibration suppression of fixed-time jib crane maneuvers文獻(xiàn)、資料來(lái)源：網(wǎng)絡(luò)文獻(xiàn)、資料發(fā)表（出版）日期：2010.11院 （部）： 機(jī)電工程學(xué)院專 業(yè)： 機(jī)械工程及自動(dòng)化班 級(jí)： 機(jī)械 0808姓 名： 秦梅學(xué) 號(hào)： 2008072135指導(dǎo)教師： 周海濤翻譯日期： 2012.3.26

2、山東建筑大學(xué)畢業(yè)設(shè)計(jì)（或畢業(yè)論文，二選一）外文文獻(xiàn)及譯文- 2 -trolley translation and load-line length change. The coupled, nonlinear equations of motion and adjoint equations, obtained from the application of Pontryagin's maximum principle, are

3、 solved analytically for the cases of constant and variable hoisting speeds. In both cases the maneuvers are developed such that the payload is residual oscillation free. Moustafa and Ebeid demonstrate a state feedback c

4、ontroller for damping load sway for a gantry crane configured to move along two orthogonal directions in the horizontal plane. This work is expanded on by Ebeid et. al. to incorporate actuator dynamics into the crane mod

5、el. Fliess et. al. investigate a feedback linearizing controller for a one-dimensional gantry crane. Trolley traversal and load-line length changes are considered. Simulation results indicate the ability of the closed-lo

6、op controller to control load sway for relatively slow maneuvers. This same system is examined by Nguyen where simulation and experimental results of a nonlinear st2te-feedback controller is used. Small motions are assum

7、ed about a specified operating point. This allows for decoupled equations of motion and decoupled controller design.Sakawa and Nakazumi investigate a rotary crane undergoing hub and boom rotation and load hoisting using

8、a combined open and closed-loop approach. The open-loop input to the crane is designed based on a postulated set of functions such that the sway motion of the load is excited minimally. The closed-loop controller is then

9、 switched on when the maneuver is near the end, providing significant sway damping. Vaha et. al. generate suboptimal, minimum time inputs for a rotary crane. Tracking is achieved via a state feedback control law. However

10、, radial sway, due to centripetal acceleration of the payload, is not compensated. Souissi and Koivo consider a rotary crane undergoing a boom-rotation-boom maneuver using a proportional-integral-derivative controller si

11、milar to Fliess et。al. 4. The simulation model considers both radial and tangential payload sway, however, the control strategy used results in residual load oscillation.In this paper a procedure for generating open-loop

12、 inputs for a rotary jib crane is introduced. The primary maneuver of interest is the residual oscillation, point-to-point movement of a payload. The input angular acceleration to the jib motor is postulated as having a

13、pulse-coast-pulse form. A numerical optimization technique is used to generate the parameters which define this pulse sequence such that the maneuver is residual oscillation free . Of secondary interest are maneuvers whe