Control Systems in Engineering

In this paper, a learning-based feedforward term is developed to solve a general control problem in the presence of unknown nonlinear dynamics with a known period. Since the learning-based feedforward term is generated from a straightforward Lyapunov-like stability analysis, the control designer can utilize other Lyap…

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• TOLGAY KARA

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• İLYAS EKER

This study presents the application of a fractional-order PIλDμand an active disturbance rejection (ADR) controller to a nonlinear two-mass system. A complete state-space mathematical model for a nonlinear two-mass system is first developed. Then, a fractional-order PIλDμcontroller and an ADR controller are both desig…

• KÖKSAL ERENTÜRK

This study presents the application of a fractional-order PIλDμand an active disturbance rejection (ADR) controller to a nonlinear two-mass system. A complete state-space mathematical model for a nonlinear two-mass system is first developed. Then, a fractional-order PIλDμcontroller and an ADR controller are both desig…

• KÖKSAL ERENTÜRK

In this letter, a new sliding-mode-sensorless control algorithm is proposed for the field-oriented induction machine drive. In the proposed algorithm, the terms containing flux, speed, and rotor time constant, which are common in both current and flux equations, in the current model of the induction machine are estima…

• NİHAT İNANÇ

In this letter, a new sliding-mode-sensorless control algorithm is proposed for the field-oriented induction machine drive. In the proposed algorithm, the terms containing flux, speed, and rotor time constant, which are common in both current and flux equations, in the current model of the induction machine are estima…

• ADNAN DERDİYOK

This paper proposes a new nonlinear stability analysis for the acceleration-based robust position control of robot manipulators by using disturbance observer (DOb). It is shown that if the nominal inertia matrix is properly tuned in the design of a DOb, then the position error asymptotically goes to zero in regulation…

• REGAİP BARKAN UĞURLU

Industrial processes often contain nonlinear mechanical loads driven by electrical drives. Linear classical controllers, widely used in industrial drives, may not give satisfactory results for some nonlinear loads, since they are linear controllers, Adaptive, robust, and intelligent nonlinear control methods are used…

• ZÜHTÜ HAKAN AKPOLAT

The problem of modeling a given higher-order spectrum as that of the output of a linear time-invariant (LTI) system driven by a higher-order white random signal is discussed. This can be posed as a higher-order spectrum factorization problem. A theorem is provided to discuss the existence of such a factorization. A fa…

This paper presents a practical approach to the robust speed control of electrical drives. The approach is based on sliding mode control (SMC), but it is shown how sampling time, system noise, actuation limit, and antiwindup integrator reduce the control to an online maximum-gain selection constrained by system noise.…

A simple observer design technique with parameter adaptation is proposed for bounded-input bounded-output nonlinear systems. In this technique, no feedback is used in the observer but parameter estimations are considered as if they are observer inputs. The proposed technique is successfully applied to speed-sensorless…

• ATA SEVİNÇ