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When identifying all modules in a dynamic network it is natural to treat all node variables in a symmetric way, i.e. not having pre-assigned roles of ‘inputs’ and ‘outputs’. In a prediction error setting this implies that every node signal is predicted on the basis of all other nodes. A usual restriction in direct and joint-io methods for dynamic network and closed-loop identification is the need...
Time-delay processes are frequently found in industry and the most common representation is a first order plus delay time (FOPDT) transfer function. The most used controller is the PID and the negative effect of the time delay in the closed loop system response is known. The most common way to attenuate the effects is by selecting a low proportional gain, degrading the response. If the model of the...
With the development of control theory and communication technology, networked control systems(NCSs) have received more and more attention. The network that is introduced into the control systems produces some issues, such as network-induced delays, data packets dropout, network resources competition and so on. In this paper, we focus on the network-induced delays. However, the closed-loop control...
Proposes a method for the automatic tuning of cascade structure CNC controllers. The design takes into account constraints on the system such as delays induced by numerical control effects and elasticity of bodies. The robustness of the algorithm is ensured by requiring minimal stability margins.
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