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This paper presents a design and control of the rail mover system for the security system of the wide area. The rail mover is driven by the geared BLDC(Brushless DC) motor on the rail surface. The position of the rail mover body has to be controlled at the correct position during the running on the rail surface. In this paper, the BLDC motor with hall sensor is used to control of the position. Because...
This paper presents a speed control for a DC motor. Despite the unknown parameters of the plant to be controlled, these parameters are found using a system identification method. The methodology implemented in this study is known as parametric regression and is based on an optimization technique. This optimization, through its fitness function, allows to find the system characteristics in order to...
The effects of choosing among different control strategy when electric drives with BLDC PM motors are involved, lead inevitably to different heat losses even if the error performances are accepted as similar. A comparative study based on unconventional infrared thermal imaging is proposed to evaluate heat losses. Two cases are considered for medium power BLDC PM speed control. First control structure...
A control system has been developed to maintain the tilting angle, provided by the user, of a two-rotor single-axis mechanical apparatus. The entire control scheme consists of two feedback loops. The inner loop regulates the rotational speed to one of the rotors, while the outer loop controls the tilting angle of the mechanical beam. The inner-loop controller was designed through pole-placement based...
This Paper proposes method of estimating and controlling the speed using PID and FUZZY TECHNIQUE for a separately excited DC motor. To achieve accurate speed control of separately excited DC Motor, the rotor speed of the dc motor can be made to follow an arbitrarily selected range especially when the motor and load parameters are known. In existing feedback control system, if there is any variation...
In this paper, real time position, trajectory and speed controls are implemented for a serial excited brushed DC motor using PID and state feedback control methods. The purpose of this study is to keep the position and speed on desired references. The control blocks are designed on Matlab-Simulink and applied by F28335 DSP control board. The experimental results of PID and state feedback methods are...
This paper presents a performance analysis of Adaptive Neuro Fuzzy Inference Systems (ANFIS) which is applied to control the speed of Brushless Direct Current Motor (BLDCM). The proposed strategy of speed BLDCM controller is operating which is similar to the conventional direct current motor. This strategy is implemented base on quadratic axis control and zero direct axis current. The aim of the speed...
This research describes the development of a test-rig for observing the behavior of a large wind turbine system and investigates the design of power electronics and controller performances in a laboratory environment. The test-rig consists of a PC, Lab Master I/O board, power electronics circuitry and a 3HP separately-excited DC motor which drives a wound rotor induction generator with the rotor windings...
This paper presents a direct current controlled pwm method for control of four-switch, three phase BLDC motor. The main features of this converter are twofold: the first is the reduction of switches and freewheeling diode count, the second is the reduction of conduction losses. For effective utilization of the developed system, a novel direct current controlled pwm scheme is designed and implemented...
This paper presents a haptic interface actuated by a Traveling Wave Ultrasonic Motor (TWUM). First, we detail a one degree of freedom force-feedback device on which control laws are tested. Then the control strategy is presented. It relies on a modeling of the motor which is inverted in order to reach the control laws. We present a strategy to attain good behavior when the lever rotates at low rotational...
An integrated system of wound rotor induction motor soft starting and doubly-fed speed adjusting was proposed. It consists of variable reactance converter, electronic power inverter, controller and wound rotor induction motor. The hardware design of the integrated system was illustrated in detail. When soft starting, variable reactor technique was adopted. While doubly-fed speed adjusting, double...
In this paper, experimental results for a singularity-free control algorithm capable of adapting for unknown control direction is presented. Specifically, the adaptive control design is implemented on a simple DC motor/inertial load system where the influence of the voltage control input is uncertain. Specifically, the controller is not sure whether a positive/negative torque is produced when a positive...
Induction Motors have been used as the workhorse in the industry for a long time due to its easy build, high robustness, and generally satisfactory efficiency. However, they are significantly more difficult to control than DC motors. One of the problems which might cause unsuccessful attempts for designing a proper controller would be the time varying nature of parameters and variables which might...
Variable frequency speed regulation system in electric actuator is researched. In order to improve the run-time performance of the actuator motor, the technology of vector control is introduced. In vector control, the AC motor is equivalent to the DC motor by coordinate transformation. The decoupling control of the electromagnetic torque can be completely realized by using vector control. The strategy...
This paper proposes a modeling method for characterization of single-phase brushless dc (BLDC) fan motors in applications to information appliances. The nonlinear back-EMF induced by the rotor flux with stator winding is modeled by a look-up table. By parameter identification and computer simulation, this modeling method assists designers in waveform analysis and control loop design. Simulation results...
As brushless DC motor (BLDCM) is a multivariable and non-linear system, using conventional PID control can not obtain satisfied control effect. In this paper, a grey PID controller model based on grey theory is presented, and the controller is applied into the BLDCM speed control. In this system, if only use classic PID controller, cannot overcome the shortcomings of parameter uncertain. So we use...
An fuzzy gain based adaptive fuzzy logic controller (FLC) is developed for the speed control of brushless DC motor (BLDCM) drive in this paper. In a FLC, the way to improve the performance of the FLC is to tune the fuzzy rules, membership function and scaling gains of inputs and output. The scaling gains of the inputs and output of the proposed fuzzy controller are parameters that can be tuned conveniently...
Based on the detailed discussion of the basic principles and merits for stator core saturation method and sliding mode observer (SMO) method, a hybrid rotor position self-sensing approach is investigated by combining the two methods. To detect the initial rotor position, a method based on the magnetic saturation characteristic of the stator core is presented. To detect the rotor position at low speed...
This paper presents a new and novel technique for speed control of a brushed DC motor without employing any direct shaft transducer in its feedback mechanism. This method uses the current/voltage variation produced on the motor main input power lines as the brushes move from collector blade to the next. The frequency of variation is proportional to the motor speed and the rotor position can also be...
Field oriented control (FOC), published by BLASHKE in his pioneering work in 1972, allows high performance speed and torque response to be achieved from an induction motor. The instantaneous magnitude and position of the stator flux space vector must continuously be known with precision in order to achieve and maintain perfect filed orientation. When driven by a filed oriented controller, an induction...
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