dc series motor speed control methods
Tài liệu Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System ppt
... schematic diagram of a DC motor is shown in Figure 6. Figure 6. Schematic Diagram of a DC Motor Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 10 • ... root-locus domain. Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 24 Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System 1. Introduction This ... Experiments Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 23 2. Physical System A DC motor converts direct-current (DC) electrical energy into rotational...
Ngày tải lên: 25/01/2014, 13:20
Tài liệu Speed Control of DC Manchines pptx
... B r e r v r B r I r F r B r v r e r B r I r F r Đặc tính cơ của động cơ DC kích từ nối tiếp Example 4: Example 5: Đặc tính cơ 4 phần tư ...
Ngày tải lên: 17/12/2013, 14:15
Direct control methods for matrix converter and induction motor
... basics of Direct Torque Control, Direct Current Control and Sliding Mode Control of matrix converters. I. INTRODUCTION In recent years many research results on control methods for matrix converters ... closed loop control of a drive system consisting of matrix converter and induction machine. Slip control and field oriented control are the basic methods applied for closed loop control [4]. ... presented to give an overview and comparison. These methods are Direct Torque Control (DTC), Direct Current Control (DCC) and sliding mode control. After a short introduction to matrix converter...
Ngày tải lên: 13/05/2014, 00:55
Tài liệu An Introduction to Intelligent and Autonomous Control-Chapter 11: Learning Control: Methods, Needs and Architectures pptx
Ngày tải lên: 14/12/2013, 12:15
Tài liệu Speed Control SPC GAS SPRINGS, cushioned pptx
... Overview of Gas Springs 2 . 21369 . 2007 . 1 Speed Control TM « SPC Gas Springs, cushioned 2486.12. FIBRO SPC Gas Springs Speed Control TM « are designed to reduce or eliminate the ... caused by the increased return travel speed in high speed presses (link drive presses). SPC Gas Springs feature an integral return travel delay which reduces the speed of the gas spring to 0.4 m/s ... 2 . 21370 . 2007 . 1 3 Speed Control TM « SPC Gas Springs, 2486.12. cushioned subject to alterations Force in daN at Piston...
Ngày tải lên: 22/01/2014, 02:20
HOBBYKING BRUSHLESS ELECTRONIC SPEED CONTROL FOR CAR OR TRUCK potx
Ngày tải lên: 16/03/2014, 12:20
báo cáo hóa học:" Scan speed control for tapping mode SPM" docx
Ngày tải lên: 21/06/2014, 17:20
DC bus control of variable speed wind turbine using a buck boost converter
... [13] 3 tdcdc PVIVI== (3) Where, V dc , I dc are DC side voltage and current, respectively. The mean value of DC voltage is shown like the following. 6 max 6 3 cos dc LL VVd π π θθ π − = ∫ ... Operation modes of buck boost converter 2 Unlike constant -speed control, a variable -speed control can adjust the speed of the turbine as the wind speed changes, so as to operate at the peak of the ... proposed MPPT control method. Fig.7: Wind turbine output power without MPPT control method for low wind speed. Fig.8: Wind turbine output power with MPPT control method for low wind speed. ...
Ngày tải lên: 03/01/2014, 19:15
New control strategy for variable speed wind turbine with DC DC converters
... converter LOAD P electSpeed Duty ratio VSWT Aero dynamical / Mechanical unit MPPT LPPT Operator Controller speed d Control strategy VSWT Control unit VSWT Electrical unit Fig. 1. Control concept ... PWM i* i edu Fig. 5. DC- DC converter controller. III. N EW P OWER C ONTROL S TRATEGY In order to extract the maximum power available at various wind speeds, two different control algorithms ... power in above rated wind speeds. This control acts directly upon an additional hydraulic system and is very important to protect the blades from breaking. The speed control algorithm serves...
Ngày tải lên: 03/01/2014, 19:15
Direct torque control of brushless DC motor with non sinusoidal back EMF
Ngày tải lên: 03/01/2014, 19:44
A park like transformation for the study and the control of a nonsinusoidal brushless DC motor
Ngày tải lên: 03/01/2014, 19:44
Direct torque and indirect flux control of brushless DC motor with non sinusoidal back EMF without position sensor
... conduction DTC of BLDC motor drive with six-switch inverter scheme. Keywords: Brushless dc (BLDC) motor, sliding mode observer, direct torque control (DTC), stator flux control, fast torque ... Block Indirect torque control method of BLDC motor explained in [9] was extended to a direct torque and indirect flux control technique for six-switch inverter BLDC motor in [7] which is suitable ... equation (6) eliminates the speed term in the denominator which causes problem at zero and near zero speeds. 2.3 Control of Stator Flux Linkage Amplitude Since BLDC motor does not have sinusoidal...
Ngày tải lên: 03/01/2014, 19:45
Direct torque and indirect flux control of brushless DC motor
... of brushless dc (BLDC) motor with nonsinu- soidal back electromotive force (EMF) has been extensively inves- tigated. In the literature, several methods have been proposed for BLDC motor drives ... force (EMF), position-sensorless control, stator flux control, torque pulsation. I. I NTRODUCTION T HE permanent-magnet synchronous motor (PMSM) and brushless dc (BLDC) motor drives are used extensively ... INDIRECT FLUX CONTROL OF BRUSHLESS DC MOTOR 355 TAB L E I S WITCHING T ABLE FOR DTC OF BLDC M OTOR U SING T HREE - PHASE C ONDUCTION indirectly kept at its optimum level, while the motor speed is less...
Ngày tải lên: 03/01/2014, 19:46
Direct torque control of four switch brushless DC motor with non sinusoidal back EMF
... only the torque is controlled without speed control, the time range of control system under transient state is selected short. The motor speeds up to a very large value if the motor is run longer ... sampling time, dc- link voltage, hysteresis bandwidth, motor parameters especially the winding inductance, motor speed, snubber circuit, and the amount of load torque The best way to control the ... I. I NTRODUCTION Brushless dc motors have been used in variable speed drives for many years due to their high efficiency, high power factor, high torque, simple control, and lower maintenance...
Ngày tải lên: 03/01/2014, 19:46
Pseudo vector control – an alternative approach for brushless DC motor drives
... motor that is fed by square-wave current and it is often called Brushless DC Motor (BLDCM). The main difference between two kinds of motors from the control viewpoint resides on current control ... conventional control system for BLDC motor (Fig. 2). The motor is fed by a PWM-controlled MOSFET inverter. As we can see in Figs. 2 and 3, the currents are controlled by 3 current controllers ... machine, Vector control, Pseudo-vector control, Torque ripple minimization. I. I NTRODUCTION A. Sine-wave PM Motor vs. Square-wave Motor: Vector Control vs. Phase Current Control With the...
Ngày tải lên: 03/01/2014, 19:46
Brushless DC Motor Control Made Easy potx
... Setup ADC (bank1) movlw B’00001110’ ; ADC left justified, AN0 only movwf ADCON1 banksel ADCON0 ; setup ADC (bank0) movlw B’11000001’ ; ADC clock from int RC, AN0, ADC on movwf ADCON0 bsf ADCON0,GO ... reading ;********************************************************************** ;* ;* Main control loop ;* Loop call ReadADC ; get the speed control from the ADC incfsz ADC,w ; if ADC is 0xFF we’re at full speed - skip timer add goto PWM ; add Timer0 to ADC for PWM movf ... the speed control potentiometer ;* and start the next reading ;* btfsc ADCON0,NOT_DONE ; is ADC ready? return ; no - return movf ADRESH,w ; get ADC result bsf ADCON0,GO ; restart ADC movwf ADC...
Ngày tải lên: 30/03/2014, 07:20
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