This paper deals with design of a failure tolerant control system where failures are identified using the normalized coprime factorization method. The identification method employed is a closed-loop one, which is also based on coprime factorization; therefore, the method is suitable to the robust control systems. The impact of failure on the closed-loop stability is evaluated by ν-gap metric ob...

This paper reviews the recent developments in the field of sensorless control of Brushless Direct Current motors. Moreover a survey of application of H∞ control theory for robust control, considering the uncertainties like modeling errors and external disturbances in various motors and systems has been carried out. This provides a deeper insight into the recent developments and future scope in ...

Robust stability is a major concern for real-world control applications. Realization of optimal robust requires stabilization scheme, which ensures that the system stable and presents performance predefined range perturbations. This study presented an approach closed-loop fractional order proportional integral derivative (FOPID) systems with interval parametric uncertainty uncertain time delay....

This paper reposts the results of an on-going project and investigates modelling and remote control issues of an industry excavator. The details of modelling, communication and control of a remotely controllable excavator are studied. The paper mainly focuses on trajectory tracking control of the excavator base and robust control of the excavator arm. These will provide the fundamental base for...

systems with uncertain parameters are studied by one branch of robust control theory. Usually, it is assumed that the uncertain parameters are bounded by their minimum and maximum values. The uncertain parameters then form a box in the space of parameters. To provide an alternative, control theoreticians introduced the concept of spherical uncertain system. The uncertainty set is then described...

A robust controller which is designed by employing variable-structure control and linear-quadratic method is presented for a permanent-magnet synchronous motor (PMSM) position control system. It is to achieve accurate control performance in the presence of plant parameter variation and load disturbance. In addition, it possesses the design flexibility of the conventional state feedback control....

The current article presents a design procedure for obtaining robust multiple-input and multiple-output (MIMO) fractional-order controllers using ?-synthesis with D–K iteration. uses the generalized Robust Control framework in order to find controller which meets stability performance criteria family of plants. Because this control problem is NP-hard, it usually solved an approximation, most co...

The adaptive robust control (ARC) for DC motors subjected to parametric uncertainties, disturbances and input saturation is considered in this study. To achieve high performance while keeping the control authority within saturation limit, a saturated ARC scheme is proposed. In this scheme, a variable-gain saturation function is introduced for the virtual control law, so that the amplitude of th...

We present a control scheme that does not require exact knowledge of the model of an underwater vehicle while maintaining robustness against both parameter uncertainties and environment disturbances. An important aspect of the proposed control is the relative simplicity of its implementation. To verify the effectiveness of the controller, we use an efficient simulator that takes into account th...

In this study an observer-based novel design of robust control system with an estimate scheme of sensor states to accommodate extended bounded-sensor faults is proposed. The sensor faults are, in general, modeled as polytopic bounds in robust control framework and are usually given as a priori assumption. But, in practice, the sensors that are subject to faults are especially vulnerable to vari...