This paper explores the properties of adaptive systems with closed–loop reference models. Historically, reference models in adaptive systems run open–loop in parallel with the plant and controller, using no information from the plant or controller to alter the trajectory of the reference system. Closed–loop reference models on the other hand use information from the plant to alter the reference...

A novel position control strategy for a Brushless DC motor (BLDC) drive is proposed in this paper. Brushless DC motor, which is widely used in the field of Direct Drive servo Actuator (DDA) with superior performance, possesses fast transient response and high accuracy. Nevertheless, there are such uncertainties as unpredictable flow torques and estimated errors of the BLDC model in this system,...

In this paper, an efficient control strategy for three-phase four-switch inverter-fed Brushless DC Motor (BLDCM) drives with trapezoidal back Electromotive Force (EMF) is proposed. the proposed approach, outer loop adjusting motor speed designed using Model Predictive Control (MPC) while inner based on a hysteresis controller regulates BLDC phase currents. To effectively adjust current of uncon...

We propose a stochastic MPC scheme using an optimization over the initial state for predicted trajectory. Considering linear discrete-time systems under unbounded additive disturbances subject to chance constraints, we use constraint tightening based on probabilistic reachable sets design MPC. The avoids infeasibility issues arising from by including as decision variable. show that stabilizing ...

This paper aims to design a novel control strategy of single converter hybrid power system including Proton Exchange Membrane Fuel Cell (PEMFC) and super capacitors for electric vehicle applications. The objective be addressed in such systems is smooth the current PEMFC considering transient sinusoidal disturbance from load. Moreover, real-time applications, it required ensure operation by taki...

A general response-based technique is presented for closed-loop transient stability emergency control. It relies on E-SIME, derived from the hybrid transient stability method, SIME. E-SIME uses real-time information supposed to be furnished by phasor measurement units to predict the stability status of the power system, and, in view of an imminent instability, to design and trigger appropriate ...

The major hurdle encountered in achieving high performance in servo speed control is the occurrence of large relative errors at low speeds due to torque variations. In this paper, it is shown that this problem can be tackled in the case of synchronous motors, by keeping the stator current and the rotor flux nonorthogonal and including an inner position control loop to improve the transient beha...

for electric machine, servo drive, object positioning, intelligent control, two-mass load. Abstract— It is known that existing algorithms for control position of precision electric drive of systems with nonliarities: elasticity and friction do not provide damping of autooscillations at infralow tracking speed. Therefore control algorithms, which ensure smooth motion of the load at acceptable tr...