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This paper presents an adaptive filter for fuzzy-logic controller for vector controlled based speed controller incorporating with a maximum torque per ampere (MTPA) of an interior permanent magnet synchronous motor (IPMSM) drive to minimize the torque ripple. The design and optimization of the FLC, infinite impulse response (IIR) filter and the adaptation algorithms are presented. Different operating...
This paper presents a direct torque control (DTC) scheme using space vector modulation (SVM) to achieve high performance speed control of a permanent magnet synchronous motor. Based on the concept of a field-oriented control principle, a Proportional-integral (PI) flux controller is first established to achieve fast direct flux control and then cascade schemes of PI torque and speed controllers are...
In this paper a two-mass resonant system with a speed controller by resonance ratio control (RRC) has been simulated. The state space technique for two-mass system is used. A linear transfer function model is also developed. The gains of the controller can be designed by coefficient diagram method (CDM). The simulation results are illustrated that the proposed controller improves dynamic performance.
Torsional vibration suppression and attainment of robustness in motion control systems is a requisite in industry applications. This paper presents the algorithm to design a speed control strategy of a two-mass resonant system by a proportional-integral-derivative (PID) or three-term controller. The simulation results show that the control method has robust stability and fast speed response.
The efficiency of the wind power conversions systems can be greatly improved using an appropriate control algorithm. In this work, a robust control for variable speed wind power generation that incorporates a doubly feed induction generator is described. The electrical systems incorporates a wound rotor induction machine with back-to-back three phase power converter bridges between its rotor and the...
A nonlinear speed controller for permanent magnet synchronous motor (PMSM) was designed to achieve speed tracing control and robust adaptive control. The proposed strategy was composed of nominal model method, backstepping control, sliding mode approach and RBF network approach. The controller included two parts: the model controller and the robust controller. The former was designed to ensure a desired...
This paper deals with the design of LQG controllers for pitch regulated, variable speed wind turbines where the controller is used primarily for controlling the pitch angle through a collective pitch angle in the high wind speed in order to guarantee the power regulation. The performance of the control is compared to that of a PID controller using the SUT-1MW wind turbine and wind model. The results...
In this paper a novel framework for idle speed control of a spark ignition engine is introduced. The control task is to maintain the engine speed and the torque reserve at their reference values while the clutch is open. For this purpose a robust control design is proposed using sliding mode theory. It will be shown that this framework is robust against external load torque disturbances, parameter...
There are big ripples on current and flux linkage and electromagnet torque under traditional direct torque control (DTC) on motor drive system. To solve these problems, fuzzy controller is designed to instead traditional hysteretic comparator, and zero voltage vectors are used to further reduce ripples. Rotor speed is estimated online by extended Kalman filter (EKF) algorithm. Speed sensorless DTC...
Nonlinear adaptive speed and d-axis current control schemes based on adaptive state feedback and backstepping technique are proposed for a permanent magnet synchronous motor (PMSM). In the controller design, adaptive state feedback and backstepping control approach using the parameter dependant Lyapunov function is adopted to derive the control scheme, which is robust to the all parameter uncertainties...
This paper describes the architecture and modeling of an autothrottle servo drive system developed by Woodward MPC Corporation for a typical midsize business jet aircraft. The autothrottle speed control system automatically adjusts the throttle lever position in response to changes in thrust level demands, thus providing speed control and thrust management for the aircraft. The autothrottle servo...
In this paper, a new controller design method is developed for the control of separately excited dc motors, fed by a three phase PWM ac-dc converter. A complete model is developed using the d-q reference frame for the ac part and the conventional dc formulation for the motor. Based on passivity analysis, by using as storage function the total energy of the system, it is proven that the system is always...
An omni-directional rolling spherical robot equipped with a high-rate flywheel (BYQ-V) is presented, the gyroscopic effects of high-rate flywheel can further enhance the dynamic stability of the spherical robot. This robot is designed for territory or lunar exploration in the future. The mechanical structure and control system of the robot are given particularly. Using the constrained Lagrangian method,...
The design of flight control system for high dynamic aircraft (HDA) requires a more efficient positional accuracy and quicker response of rudder system. Design and experimental studies on electric rudder load simulator is an essential method to study the performance of HDA rudder system. The performance of a real rudder system can be tested by simulating aerodynamic loads under various high dynamic...
Reaching law control (RLC) is an approach to sliding mode control (SMC) design which is widely applied in the presence of model uncertainties, parameter fluctuations and external disturbances now. This paper proposes a RLC method using in DC motor discrete time speed control system and discusses the implementation problems and the robustness of the control approach in details. Since the discrete time...
This paper focuses on designing a multimodel linear quadratic (LQ) controller for variable-speed horizontal axis wind turbines. Those turbines use blade-pitch and electromagnetic torque control to meet specified objectives for three regions of operation. We aim in this paper to use the blade-pitch control in the high wind speed operating zone. The controller is then designed in order to optimize a...
A fuzzy controller for various types of DC motor fed by DC/DC converter is designed and presented in this paper. The fuzzy controller is designed in such a way that it can be implemented in a micro-controller or DSP processor based embedded system. The system designed has two loops with an inner ON/OFF current controller and an outer fuzzy speed controller. The later is used to change the duty cycle...
A variable speed wind energy conversion system, with fuzzy control for efficiency optimization and performance enhancement, is discussed in this paper. A squirrel cage induction generator driven by a vertical axis wind turbine feeds the power to a utility grid through two double side pulse width modulated converter system. The generation control system uses three fuzzy controllers. The first fuzzy...
Control of an advanced high-speed flywheel energy storage system (FESS) based on a high-speed surface mount permanent magnet synchronous machine (PMSM) is explored in this paper. A PWM inverter/rectifier controls the bi-directional flow of energy for charging and discharging the flywheel. During charging, an inner current loop controller and an outer speed loop controller regulate the system performance...
This paper presents and discuses different PI tuning methods and control strategies for a permanent magnet synchronous machine. The machine is a part of a wind turbine generation system in which two back-to-back-connected three-level converters are the power interface to the electrical grid. It is demonstrated that, for the speed control loop, the zero-pole cancellation method does not provide good...
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