Abstract
Many chemical plants have to be controlled such that their responses are within given tolerances under various operating conditions including variation in plant parameters and disturbances. It is therefore desirable to have adaptive controllers which can compensate for changes in process parameters due to varying working conditions or initial indeterminateness. The high effort in development and implementation as well as operation of such control systems is justified economically if significant improvements in operation can be achievedThe examples discussed in this paper are aimed to showing the different steps in the development and application of single variable and multivariable adaptive control for different types of processesThe applications show that, at the present time, adaptive control has reached a high degree of maturity, making it a very powerful tool for the experienced control engineer. However, for making adaptive control accessible to the broad field of process engineers, the degrees of freedom have to be reduced by simplifying the elements of the adaptive controller. To clarify this, further research has to be undertaken
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