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To improve the tracking precision, integrated control strategy of Permanent Magnet Linear Synchronous Motor (PMLSM) based on sliding mode control and repetitive control was proposed in this paper. Because PMLSM is easily affected by the periodic thrust fluctuation caused by the end effect, the periodic friction and other aperiodic disturbance during operating. The speed controller and the current...
This paper proposes the tuning of fractional order PID (FOPID) controller of electromagnetic actuator (EMA) system for aero fin control (AFC) using particle swarm optimization (PSO). The EMA is realized with permanent magnet brush DC motor which is driven by a constant current driver. Using the non-linear model of EMA-AFC system which includes the non-linearities of DC motor, an FOPID position controller...
This paper proposes the tuning of PID controller of electromagnetic actuator (EMA) system for aero fin control (AFC) using Particle swarm optimization (PSO) and Bacterial foraging optimization (BFO). The EMA is realized with permanent magnet brush DC motor which is driven by a constant current driver. Using the non-linear model of EMA-AFC system which includes the non-linearities of DC motor, a PID...
An recurrent fuzzy neural network (RFNN) compensation strategy combined with the backstepping approach for permanent magnet linear synchronous motors (PMLSMs) drive is proposed. Considering the lumped uncertainties with parameter variations and external disturbance for an actual PMLSM drives, a backstepping control law is derived by backstepping design technique. However, the upper bound of the lumped...
Speed sampling error depressed the systempsilas performance, which was a universal problem in traditional position servo system composed of position, speed and current closed loops. On the base of conventional position servo system, a novel digital position servo system merely with outer position-loop and inner current-loop is proposed in this paper, which has excellent dynamic performance for no...
This paper presents high frequency region position sensor-less vector control of interior permanent magnet synchronous motor (IPMSM) drives. The proposed method enables to estimate pole position at high speed. The proposed method estimates flux from a full order observer and estimates pole position with estimated flux. The observer gain for high speed operation is decided by pole placement. Several...
A novel control method for Permanent Magnet Synchronous Motor (PMSM) position servo systems is presented, which can greatly improve the dynamic performance of servo systems. In this method, the maximum reaching velocity control is introduced to reconstruct the conventional three closed-loop PID regulators. Under the new velocity and position control modes (two-segment modes), the PMSM servo systems...
In order to control the speed and/or position of permanent magnet (PM) motors, they require position sensors. Basically, the auto-commutation needs 3 sensors for a 3-phase motor. In micro-motors, as there is no space for the sensors, self-sensing must be used. With big motors, suppression of the sensors enhances the overall reliability. The motor becomes a sensor itself and electromagnetic phenomena...
A method of sensorless vector control with unity power factor for surface mounted permanent magnet synchronous motor (SPMSM) is presented. The method can realize the motor control of unity power factor under the rated speed, and the motor can also work normally under high speed by way of field weakening. Comparing with the vector control of the statorpsilas magnetic force plumbs with the permanent...
The doubly-salient permanent magnet (DSPM) motor employing straight rotor and concentrated windings is conventionally operated by means of current chopping control in constant-torque region and angle-position control in constant-power region due to the trapezoidal back-EMF waveform. However, the rotor-skewing method can be used to improve back-EMF and inductances waveforms to be sinusoidal significantly...
Generally, a back electro-motive-force or flux observer is used for position sensorless drive of permanent magnet synchronous motors from middle to high speed range. Thus, the estimation accuracy of the observer influences position sensorless drive performance. This paper proposes a position sensorless drive system using the Hinfin flux observer in which the observer gain is designed by using the...
Discontinuous primary permanent magnet linear synchronous motor (DPPMLSM) has many merits in long-stroke transportation, including vertical, horizontal, and slanted model system, however, detent force of DPMLSM is particularly troublesome requiring positioning accuracy specially at low speed region as well as of position control and is different from short primary type and short secondary type PMLSM...
For the control of ship electric propulsion interior permanent-magnet synchronous motor (IPMSM), the position-sensorless observer and based neuro-fuzzy PI controller had been designed, the position sensorless of the flux-observer-based control scheme can obtain an accurate knowledge of the motor magnetic behavior, and lead to good robustness against load variations. A fuzzy basis neuro-network is...
This paper describes the implementation of a hybrid self-tuning regulator for the positioning of motors in 3-degree of freedom table in image stabilizer. This system has three motors in yaw, pitch, and roll axis for control of table. The servo motors are permanent-magnet DC motors in which no speed reducer is used. Experimental results obtained with three DC motors in yaw, pitch and roll axial. There...
This paper presents the implementation of a two degree-of-freedom, high-precision, magnetic-levitation-based positioning system. The apparatus employs one permanent magnet linear synchronous motor and is constructed by Quanser Inc. The paper focuses on the design and testing of a nonlinear controller required for actuating the positioning system. The controller is based on feedback linearization and...
This paper presents a novel implementation of a position sensorless vector control scheme for a 40-kW permanent magnet synchronous motor (PMSM) system in super-high speed (>50,000 rpm) applications. A novel sensorless vector control scheme based on a flux observer with phase compensation has been developed and performance investigated. The implementation features a cost-effective solution with...
This paper proposes a novel sensorless position control system for an interior permanent magnet synchronous motor. In this paper, a novel rotor position estimation technique is proposed. This estimation technique only relates to the slopes of the three-phase stator currents, and does not relate to the parameters or operating conditions of the motor. Neither extra circuit nor external exciting signal...
Compared with traditional electrochemical batteries, flywheel energy storage systems are attractive in certain aerospace applications due to their high power density and dual-use ability to achieve attitude control. A small flywheel energy storage unit with high energy and power density must operate at extremely high rotating speeds; i.e., of the order of hundreds of thousands of revolutions per minute...
This paper introduces a non linear position controller for an interior permanent magnet synchronous motor. The system model equations provide the basis for the controller which is designed using adaptive backstepping technique. Various system uncertainties are considered in the design. Using Lyapunov's stability theory, it is approved that the control variables are asymptotically stable. The complete...
This paper presents dynamic characteristics by position control in servo application of permanent magnet linear synchronous machine with double-side PM mover and slotless iron-cored stator. In our analysis for motor parameters, we adopt the generalized magnetic vector potential with space harmonics calculated from the transfer relations and boundary conditions. This analysis gives analytical formulae...
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