Master slave

In control situations with more then one measured variable but only one manipulated variable, it is advantageous to use control loops for each measured variable in a master-slave relationship. In this, the output of the primary controller is usually used as a set point for the slave or secondary loop. 

Howe, P.W., T. C. Parsons and L. E. Miles The Water Shielded Cave Facility for Totally Enclosed Master-Slave Operations at Lawrence Radiation Laboratory. Report UCRL-9657 (9- Okt. 1961). 

Some of the strange bedfellows one finds in natural relationships presumably reflect a multiplicity of interactions. Lichens, for example, consist of fungal units and either algal or cyanobacteria in a symbiotic (possibly a master/slave) relationship. In endosymbiotic relationships, compound organisms are constituted by algae (e.g. the zoochlorella of green hydra, and... 

Dropping a user-interface widget, such as a master-slave pair of list boxes, onto a canvas and connecting the lists to the appropriate data sources from the problem domain. 

Define standard patterns to be followed in constructing the user interfaces. Many of these patterns can be formalized as frameworks. Examples are a master-slave listbox for navigating any 1-N association and a drill-down into data details using a tree panel. 

We show in Figs. 2 and 3 the speed up for a Davidson iteration obtained with the PVM [17] ( Parallel Virtual Machine ) and PVMe [18] ( PVM enhanced ) message passing interfaces respectively. Speed-up factors are here relative to the sequential version of the program (n=l), and the theoretical mciximum has been defined according to the expression s n) — n — I appropriate to the used master/slave model. 

T. Chaly, J.R. Dahl, R. Matacchieri, D. Bandyopadhyay, A. Belakhlef, V. Dhawan, S. Takikawa, W. Robeson, D. Margouleff, D. Eidelberg, Synthesis of 6-[ F]fluoro-dopamine with a synthetic unit made up of primarily sterile disposable components and operated by master slave manipulator, Appl. Radiat. Isot. 44 (1993) 869-873. 

Master-slave operation of machine and UV curing unit in all states of operafion (sfart, sfandby, and production)... 

HPLC systems operate on a master-slave arrangement in setting up for automation. One module sets the timing and initiates the process, and the remaining modules accept a signal and follow the leader. In a gradient HPLC system, the master module can be a microprocessor-based controller, a computer software-based controller, an autosampler, or an integrator. 

I wish to acknowledge D. Z. Nelson and F. A. Cheek, III for their technical support and their excellent abilities on the master-slave manipulators while performing the leach tests. 

The ion exchange equipment, which is located on a metal rack (1.8 x 0.9 x 0.4 m) in one of the TRU hot cells, is maintained and operated with two master-slave manipulators that penetrate the 1.4-m-thick shielding wall. A flow diagram is shown in Fig. 1. 

The equipment for curium-americium oxide production (illustrated schematically in Fig. 2) is located on a rack within a master-slave manipulator-equipped hot cell in the TRU cell bank. The feed adjustment and raffinate collection vessels are located in a tank pit in another part of the cell bank. General design considerations and operating philosophies for chemical process operations at TRU have been described previously (4) Only equipment items that are unique to the curium-americium oxide production are discussed below. 

Medical Sources. All medical encapsulations are done in a facility which consists of a series of five interconnected stainless steel boxes which provide primary containment of process equipment and materials. Interconnections include transfer ports, drop-through tubes, and ventilation ducts. Each containment enclosure has a floor area of 1.52 m x 0.91 m the floor level is 0.76 m above the building floor. A pair of master-slave manipulators serve each containment box. A closed circuit television system and a telescope are provided for close-up viewing of incell operations and can be moved from cell to cell as needed. General arrangement of the facility is shown in Figures 13 and 14. 

Now, I want to build much the same device - a master-slave system which operates electrically. But I want the slaves to be made especially carefully by modern large-scale machinists so that they are one-fourth the scale of the hands that you ordinarily maneuver. So you have a scheme by which you can do things at one-quarter scale anyway - the little servo motors with little hands play with little nuts and bolts they drill little holes they are four times smaller. Aha So I manufacture a quarter-size lathe I manufacture quarter-size tools and I make, at the one-quarter scale, still another set of hands again relatively one-quarter size This is one-sixteenth size, from my point of view. And after I finish doing this I wire directly from my large-scale system, through transformers perhaps, to the one-sixteenth-size servo motors. Thus I can now manipulate the one-sixteenth size hands. 

In handling a radioactive material, it is basically important not to hold a radiation source directly with the hand. Handle it by remote operation as much as possible. Use forceps, tongs or similar devices. In handling radioactive materials of curie level or higher, remote controlling devices such as a master-slave type manipulator must be used. 

You implement the master/slave setting by jumpering a set of pins. There are several different configurations of these pins, so we ll just detail the most common. As always, check your documentation to determine which method your drive uses. 

Nowadays, immersive multi-screen displays hke CAVEs are driven by off-the-shelf PC clusters with consumer graphics cards instead of multipipe, shared memory graphics computers. This reduces the costs for IVR infrastructure dramatically. VR toolkits supporting PC clusters must inherently have a distributed software architecture, and data synchronization is an issue in such frameworks. Besides a client-server approach, where the scenegraph is distributed over the cluster nodes, a master-slave approach is most often... 

Our framework represents a combination of both approaches. In principle, ViSTA follows the master-slave concept. In the context of CFD postprocessing however, the master requests and gets data from the simulation host, which then has to be propagated to the slaves in order to be rendered. To combine both design patterns, a so-called data tunnel has been implemented into ViSTA, working in clustered and non-clustered environments. 

Fig. 3.57. Client-Server and the Master-Slave model for PC cluster applications...

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