Page 658 - Mechanical Engineers' Handbook (Volume 2)
P. 658
4 Inner Feedback Loops 649
Figure 25 Rearrangement of Fig. 22a inner loops (electronic integration).
response without the usual concerns about reduced static accuracy. This technique is also
useful if the mounting arrangement of the primary transducer results in gain-limiting higher-
order dynamic characteristics in the outer feedback loop.
4.2 Alternative Inner Loop Variables
Sometimes it is advantageous to close inner feedback loops around variables that are dy-
namically different than derivatives of the primary controlled variable. This might be done
because of practical problems related to accurately transducing derivatives of the controlled
Figure 26 Rearrangement of Fig. 6 to give smooth, repeatable, and accurate response (inherent inte-
gration).
