The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A robust cascade control structure using the H∞ linear parameter varying current controller and the H∞ speed controller is designed for the permanent magnet synchronous motor. The H∞ LPV current controller provides fast current tracking using measured rotor speed as a scheduling variable. High load torque disturbance attenuation is achieved using the fixed H∞ speed controller.
A novel ADRC control structure which employs only three first-order ADRCs is presented for the speed control of induction motor drives, moreover, compared with the existing ADRC based speed control structures there is no need to estimate the rotor flux. As a result, the runtime of the proposed ADRC control algorithm is shorter than ever and the implementation of it on DSPs is easier than ever. The...
This paper deals with the permanent magnet synchronous motor (PMSM) with the parameters drifts and external disturbances. The objective is to develop a robust nonlinear state feedback law which will simultaneously solve the speed tracking control problem of the PMSM. The systematic strategy involves a novel nonlinear transformation of the PMSM model and the application of backstepping technique. The...
This paper introduces designing of a Takagi-Sugeno (T-S) fuzzy, state feedback controller so as to have optimal and robust full-range speed control over the wounded rotor induction motor. A slip energy recovery drive system, using 12-pulse converter and a shunt chopper is used as a modified system to drive a slip ring induction motor, which is coupled with a class of nonlinear uncertain load. Using...
A nonlinear position controller for permanent magnet synchronous motor (PMSM) was designed to achieve position tracing control and robust control. The controller included two parts: the model controller and the robust controller. The former was designed to ensure a desired reference output trajectory, and the later was devised to realize the robust control against PMSM parameter variations and load...
The robust adaptive decoupling control method is proposed to the helicopter rotor concordant load system. The controller realized the asymptotic tracking of the desired output trajectory, which used the PID controller as closed-loop controller and used the CMAC neural network to approximate the nonlinear and uncertainties. The stability analyses show that the control method has stability. The main...
A conventional two-degree-freedom (2DOF) internal model control (IMC) cannot be applied to solve the contradiction of the load disturbance rejection performance and robustness. In order to overcome the shortcomings of it, this paper presents the three-degree-freedom (3DOF) IMC method, the input, feedforward and feedback controllers are applied respectively to regulate the output tracking, the load...
In this paper we present an overview of techniques and approaches used for a load transportation system based on small size unmanned helicopters. The focus is on the control approach and on the movement of the rope connecting helicopters and load. The proposed approach is based on two control loops: an outer loop to control the translation of each helicopter in compound and an inner loop to control...
In this document a new proposal of speed vector control of induction motors based on robust adaptive VSC (variable structure control) law and its experimental validation are presented. This control scheme uses the SVPWM (space vector pulse width modulation) instead of the traditional current hysteresis comparator, because the space vector modulator eliminates the instability risk when the motor works...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.