In this paper we develop a robust controller based on variable structure systems (VSS) control theory for the stabilization of a class of Underactuated Mechanical Systems. This controller is based on a noncollocated partial feedback linearization of the underactuated system with a particular choice of the additional control for which the design is made using the sliding mode approach. Simulatio...

The paper is devoted to the trajectory tracking control task for a differentiallydriven vehicle moving on a plane surface under conditions of the persistent skid-slip phenomena. The Vector Field(s) Orientation (VFO) control strategy, presented originally for undisturbed case in [6], has been reformulated here to the new disturbed motion conditions. The extension of the VFO strategy relies on in...

Forensic analysis can help maintain the security of process control systems: identifying the root cause of a system compromise or failure is useful for mitigating current and future threats. However, forensic analysis of control systems is complicated by three factors. First, live analysis must not impact the performance and functionality of a control system. Second, the analysis should be perf...

This paper addresses the problem of H∞ control for uncertain discrete-time systems with time-varying delays. The system under consideration is subject to time-varying norm-bounded parameter uncertainties in both the state and controlled output. Attention is focused on the design of a memoryless state feedback controller, which guarantees that the resulting closed-loop system is asymptotically s...

Indirect closed-loop identification assumes the knowledge of the controller. In this brief, the constrained version of the instrumental variable (IV) methods is developed. It is based on using the known controller parameters to impose linear constraints upon the closed-loop system parameters and then solving the constrained estimation problem by the Lagrange method. The developed constrained IV...

Asynchronous automata are a model of communication processes with a distributed control structure, global initializations and global accepting conditions. The well-known theorem of Zielonka states that they recognize exactly the class of regular Mazurkiewicz trace languages. In this paper we study the particular case of distributed asynchronous automata, which require that the initializations a...

In this paper, we employ the reduced basis method for the efficient and reliable solution of parametrized optimal control problems governed by scalar coercive elliptic partial differential equations. We consider the standard linear-quadratic problem setting with distributed control and unilateral control constraints. For this problem class, we propose two different reduced basis approximations ...

Induction motors are the most widely used for appliances, industrial control, and automation; however, many applications need variable speed operations. The rapid development of power electronics controllers in recent years has attracted the attention of researchers for making use of flexible characteristics of an induction motor in variable frequency drives. It presents a compact embedded fuzz...