Bumpless switching in control - A comparative study

Industrial processes are characterized by changing dynamics associated to different operating points. Control systems usually face this behavior by adapting the control parameters or switching among controllers, in order to achieve high performance of the system in the whole process operation range. Different methods have been developed to avoid undesirable transients in the closed loop output signal when changes in the control system structure occur. This paper presents a comparative study of some of these methods showing simulation results.