MEASUREMENT AND CONTROL

system with low voltage electro-rheological magnetic fluid, Proceedings International Symposiumon Advanced Vehicle Control (AVEC), Tsukuba, Japan, 311–317.45. Sturk, M., Wu, M., and Wong, J. Y., 1995, Development and evaluation of a high voltage supplyunit for electorheological fl[r]

including photocopying, microfilming, and recording, or by any information storage or retrieval system, without priorpermission in writing from the publisher.All rights reserved. Authorization to photocopy items for internal or personal use, or the personal or internal use of specificclients, m[r]

13. Rober, S. J., Shin, Y. C., and Nwokah, O. D. I., A digital robust controller for cutting force controlin the end milling process, ASME Journal of Dynamic Systems, Measurement, and Control, 119,146, 1997.14. Åström, K. J. and Wittenmark, B., Adaptive Control<[r]

that performsdetection by comparing each set of measurements against their corresponding prototype values fortheir normal category and detects tool breakage when the measurements are sufficiently differentfrom their normal prototypes. Another variant of ART2 applied to tool breakage detection[r]

(16.1)along with the boundary conditions (16.2)where denotes the independent position variable, denotes the independent time variable, denotes the displacement at position for time , the subscripts represent partial derivativeswith respect to , respectively, and is a control input appl[r]

logical to control displacement if given the choice. In addition, if the properties of the materialchange as shown in Figure 7.13, controlling the strain (displacement) would also be less sensitiveto this variation than controlling the stress (force).Indeed, it is best to control the t[r]

lapse, heating of the workpieces, molten nugget formation, nugget growth, and mechanical collapse.In 1987, Gould found that neither poor fit-up nor use of sealer at the faying surface adverselyaffected the resistance-based control algorithms.Monitoring systems based on other indirect si[r]

machines are combined together using parallel composition. Thus, although techniques exist forconstructing a supervisory controller given the finite state machine of the plant P and the specifiedclosed-loop behavior (the language L), the large size of the resulting state space limits the sizes[r]

deformations of the workpiece; chatter vibration, cutting force, condition of the chip, and identi-fication of the cutting for process monitoring; thermal deformation, dynamic deformation of themachine elements, and structural vibration of the machine tool and wear, failure, a[r]

nomic Commission for Europe (UN/ECE), Geneva, Switzerland, 2000.10. Kim, J.-O. and Koshla, P., Design of space shuttle tile servicing robot: an application of task-based kinematic design, 10, 648, 1994.11. Masory, O., Wang, J., and Zhuang, H., On the accuracy of a Stewart platform. Par[r]

two-axle bogies (primary train suspension) will no longer profit from so-called mechanical pre-filtering of rail irregularities, and moreover, vehicles will be lighter. Both these factors have anegative influence on ride comfort, and emphasize the necessity of more advanced suspensions.Ra[r]

field levels. This fact suggests that one way to utilize the high field (high authority) regime is toconsider the various nonlinear phenomena as uncertainties and develop robust controls to compen-sate for such uncertainties. By treating the nonlinearity (or part of it) as bounded uncertainties[r]

j=−+ −=atan2(c 2a,)(), , , , 211238596Ch14Frame Page 253 Friday, November 9, 2001 6:29 PM© 2002 by CRC Press LLCInsensitivity to uncertainties in the parameters of the primary structure, however, does notguarantee sufficient robustness of the control algorithm. As mentioned earlier, some of th[r]

operation, a reduction of ground times per washing event for factor 3 (wide body) aircraft andfactor 2 (narrow body) can be achieved. Skywash integrates all features of an advanced robotsystem: pregeneration of motion programs by CAD aircraft models, object location by 3D-sensors,tactile sensor-cont[r]

however, most of the results presented in the literature have been obtained for vibration amplitudesin a range from millimeter to micron. For applications to precision space structures with opticalpayloads, it is essential that these results be confirmed for submicron vibrations,14-16 despite thenonl[r]

instrumentation and careful metrology, many errors can be identified, predicted and held withinthe desired level of the error budget.10.4.1.2 Dynamic ErrorsDynamic errors are typically caused by machine tool vibration (or chatter). They are generated byexciting resonances within the mac[r]

today. They are used even for heavy robots for which some years ago hydraulics was exclusive.This can be justified by the general conclusion that electric drives are easy to control by means ofa computer. This is especially the case with DC motors. However, it is necessary to mention somedrawb[r]

dispatcher program analyzes the tasks submitted from the organization level, and activates thebehaviors (tasks at the execution level) needed for successful completion of the task’s requirements.It also implements a set of failure procedures when a given task cannot be executed because ofposs[r]

approach does not use any a priori experience or knowledge about the inverse dynamic robotmodel. In this case it is a multilayer neural network with a sufficient number of hidden layers. Allwe need to do is feed the multilayer neural network the necessary information (desired positions,velocities,