Stochastic control of card output density

In this paper, a complete control strategy including system characteristic analysis and stochastic control design and simulation is illustrated by app lication to the feedback control of the carding group. Both the state feedb ack acid the estimator are designed precisely to control the card output de nsity so that the absolute stability of the closed-loop carding group syste m is guaranteed. This feedback control design is particularly well suited t o perform calculations by computer, and eventually we hope to design a card ing group that can be controlled directly by an on-line computer in nonlabo ratory conditions.