Abstract
This article suggests an adaptive control system for a hydrocarbon perspiration temperature control. This control system consists of a PI-controller and a pseudolinear compensating device that modifies control system dynamic properties. As a result, the behaviour research of the developed temperature control system has been undertaken. This article shows high effectiveness of the represented adaptive control system during changing control object parameters.
Highlights
Automatic control systems (ACS) with an unsteady control object must provide control device dynamic properties changing during control object properties alterations
There is a less common but effective approach based on a special adaptive compensating device that is cascaded to a controller
The proposed adaptation method does not change initial controller parameters during the ACS activity. It changes the compensating devices time constant depending on the change of control object parameters
Summary
Automatic control systems (ACS) with an unsteady control object must provide control device dynamic properties changing during control object properties alterations.In most cases this is realized by changing a PID controller parameters. The investigated control system of a carbon hydrogen condensate has a shell-and-tube heat exchanger with a transfer function given below: W To improve the ACS quality and decrease an uncontrolled control object disturbances and a control object unsteadiness influence, it is suggested to use pseudolinear adaptive compensating device (PACD) with amplitude suppression. This device increases an amplitude stability margin when changing control object parameters.
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