Low-level controller

Where feasible, general ventilation design for low-level control of toxic air contaminants... 

The originally applied empirical strategies for the optimization of processes turned out to be of only limited value in the long term and for products of high economic value, such as therapeutic proteins, and the number of monitoring systems and control strategies continuously increased. The so-called low-level control based on temperature, pressure, pH and p02 [11]... 

CD21 is a useful marker to identify neoplasms of follicular dendritic cells. The antigen density on dendritic reticulum cells is fairly high however, the same antigen is expressed at low levels on mantle zone B cells, which makes an excellent low-level control. 

Some properties of effective training programs are presented in chapter 12. Everyone involved in controlling a potentially dangerous process needs to have safety training, not just the low-level controllers or operators. The training must include not only information about the hazards and safety constraints to be... 

Provides a 6-level (high level rntemal/extemal low level controllable / partially controUable/uncontrollable) risk classification and identifies up to 25 sources of risk. Ranks them using AHP... 

Two level controllers must be used, one set for high level, the other low. The outputs of the flow controller and the high-level controller go to a high selector its output is compared to that of the low-level controller in a low selector, whose output drives the valve. 

Up to now, we discussed rather the design and low-level control schemes for our robots. However, the real-time planning and execution of motions in a dynamic and partially unknown environment is fundamental for autonomous and safe... 

The control strategies include two different approaches divided as high-level control and low-level control (Tibaduiza, 2006). In the first, the free-obstacle path is calculated based on information from the artificial vision system and this is sent to the robot using RF communication (Figure 16). 

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