dc motor speed control theory pdf

... false). Be careful of the distinction between ‘=’ and ‘==’. 5.3 Flow control operations MATLAB contains the usual set of flow control structures, e.g., for, while, and if, plus the logical operators, ... of options that extend its usefulness. 8.1 Polynomials Polynomials arise frequently in systems theory. MATLAB represents polynomials as row vectors of polynomial coefficients. For example, the ... Matrix Operations 5 5.1 Arithmetic matrix operations . . 6 5.2 Relational operations . . 6 5.3Flow control operations . 7 5.4 Math functions . 7 6 MATLAB Files 7 6.1 M-Files . 8 6.1.1 Scripts . ....

Ngày tải lên: 12/12/2013, 07:15

... 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 ã ... 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 ... Craig DC Motor / Tachometer Closed-Loop Speed Control System 11 The DC motor/ tachometer system has a single input and a single output. The input is the voltage applied across the two motor...

Ngày tải lên: 25/01/2014, 13:20

... 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

Ngày tải lên: 18/12/2013, 22:06

Ngày tải lên: 03/01/2014, 19:44

Ngày tải lên: 03/01/2014, 19:44

... 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

... 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 ... programming-based control of brushless motors,” IEEE Trans. Control Syst. Technol., vol. 11, no. 1, pp. 139–146, Jan. 2003. [19] S. J. Kang and S. K. Sul, “Direct torque control of brushless dc motor with nonideal...

Ngày tải lên: 03/01/2014, 19:46

... 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

... 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

... 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

... volume control  Electric drill speed control Reasons for accurate speed control  Motor speed should be independent of load.  Differential drive platforms need to synchronize wheel speed ... a step response for our PID controller? Control systems  What is a control system?  What are some examples?  What are the types of control systems?  How are control systems represented? ... 1011121314151617181920 0.1 SECOND INCREMENTS MOTOR SPEED D=4 I Open loop control systems  The output of the plant does not affect the input. (No feedback)  Less common today than closed loop control systems.  Examples...

Ngày tải lên: 22/05/2014, 18:05

... Block diagram of forcefree control In industrial robot arms, the servo controller is adapted to control the motion of the robot arm. The control loop of the servo controller is shown on the ... servo controller. Recently, a study of force control of industrial robots has developed rapidly and the achievement of such force control has been the major concern. A number of force control ... control. Lastly, the present approach is applied to trace a curved line using a 6 DOF industrial robot with a CCD cam- 814 Industrial Robotics: Theory, Modelling and Control 2. Forcefree Control...

Ngày tải lên: 21/06/2014, 15:20

... fault accommodation, two approaches can be used: adaptive control and switched control. Adaptive control means to modify the controller control law to handle the situation where the system’s ... fault accommodation, two approaches can be used: adaptive control and switched control. Adaptive control means to modify the controller control law to handle the situation where the system’s ... adaptation Fault Diagnosis Symptom Generation Process Model Controller Process Measurements Symptoms Parameters Reconfiguration High Level Automation Low Level Automation AUTOMATION& CONTROL - Theory andPractice284 adaptive fuzzy/neural control...

Ngày tải lên: 21/06/2014, 18:20

... penalized logistic regression, Biostatistics. AUTOMATION& CONTROL - Theory andPractice350 AUTOMATION& CONTROL - Theory andPractice348 Faloutsos C., Equitz W., Flickner M., Niblack ... AUTOMATION& CONTROL - Theory andPractice346 Consequently, we prove that using proposed hierarchical feature model ... of the classification rate error obtained for different feature blocs. AUTOMATION& CONTROL - Theory andPractice344 5.2 Best feature type selection method The hierarchical feature model...

Ngày tải lên: 21/06/2014, 18:20

Ngày tải lên: 26/06/2014, 23:20

... brush motors are easy to control, and the motor leads can be connected directly to a DC current source. Brushless motors overcome all the problems of brush motors. They work at very high speeds ... of the Motor Control Industry 11 The industry has devised several interesting variations and refinements on the PID compensators in motor controllers. The first piece of the motor controller ... technology. Battery Battery Motor Driver GEARS WHEELS Motor Motor Controller Feedback Topics Covered Here Chapter 4 The State of Motor Control Academia 32 system. The...

Ngày tải lên: 27/06/2014, 18:20

Ngày tải lên: 27/06/2014, 18:20

Ngày tải lên: 29/06/2014, 09:20

Ngày tải lên: 09/07/2014, 20:20