A dynamic model including non-idealities for a permanent magnet linear synchronous motor (PMLSM) is postulated and verified. The non-idealities acting on the physical linear motor are measured and analyzed. These experimental results are utilized in the model. The verified simulation model is used in developing a force disturbance compensator for the velocity controller of the motor. The force ...

Recursive formula for the terminal cost distribution in a scalar linear discrete-time system with disturbance and noise corrupted measurements is obtained. The system is subject to a linear saturated control strategy. The distributions of the initial state and the estimator error are assumed to be known. The disturbance is independent of the state/control and its distribution is known. The gene...

In this paper, the disturbance attenuation properties for a class of linear hybrid systems are investigated, and a hybrid optimal persistent disturbance attenuation control problem is studied. First, a procedure is developed to determine the minimal l∞ induced gain of linear hybrid systems. However, for general hybrid systems, the termination of the procedure is not guaranteed. Then, the decida...

Abstract. In this study, we examine the magnetospheric chaos and dynamical complexity response to disturbance storm time (Dst) solar wind electric field (VBs) during different categories of geomagnetic (minor, moderate major storm). The series data Dst VBs are analysed for a period 9 years using non-linear dynamics tools (maximal Lyapunov exponent, MLE; approximate entropy, ApEn; delay vector v...

This paper considers the problem of disturbance tolerance/rejection for a family of linear systems subject to actuator saturation and L2 disturbances. For a given set of linear feedback gains, a given switching scheme and a given bound on the energy of the disturbances, conditions are established in terms of linear or bilinear matrix inequalities under which the resulting switched system is bou...

In this paper, performance assessment methods of multivariable control system subject to piecewise constant time varying disturbance dynamics has been studied. The problem appeared on most industrial controllers are linear time invariant (LTI) while the process are often time varying. Take a series of disturbance dynamics that can be modelled by piecewise linear disturbance models, namely piece...

This paper analyzes the performance of discrete linear time varying (LTV) control of discrete linear periodically time varying (LPTV) plants for l2 disturbance rejection. It extends the results of [11-13] for linear periodic controllers to general LTV control of LPTV plants. It is shown that LPTV control provides strictly better control performance than linear strictly time varying control for ...

In direct adaptive inverse control (DAIC), parameters of the controller are estimated directly in the feed-forward loop. In this paper, we propose a closed loop direct adaptive inverse control (CDAIC) scheme which improves tracking, error convergence, and disturbance rejection properties of DAIC. CDAIC is applicable to stable or stabilized, minimum or nonminimum phase linear plants. CDAIC and D...