For questions regarding control schemes driven by adaptive controllers such as adaptive pole placement control, model reference adaptive control etc.

Adaptive control is a very powerful technique for designing controllers suitable to control plants with unknown parameters (mass, friction coefficient, damping coefficient etc.). It is widely used since it offers a great deal of advantages not only for the short term operation and control of a physical plant but also for the long term, since the designed controller is always capable of adapting to the current state of the plant taking into consideration any possible changes that may have occured, as for example the physical damage its parts may have suffered due to unexpected conditions or due to its long term operation.