motor control circuits pdf

Ngày tải lên: 03/07/2014, 07:20

... stable, reliable and cost-effective control system. Further details on motor control circuits and sensors are provided in several books, including Motor Control Electronics” (10). In addition, ... Parekh, Rakesh, “AN889 - VF Control of 3- Phase Induction Motors using PIC16F7X7 Microcontrollers”, Microchip Technology Inc., 2003. 10. Valentine, Richard, editor, Motor Control Elec- tronics Handbook”, ... Inc. BACK EMF CONTROL METHOD The back electro-magnetic-force (EMF) or sensorless motor control method obtains the speed and position of the motor directly from the voltage at the motor windings....

Ngày tải lên: 03/01/2014, 18:55

... 3.1. The basic control format In essence, we are endeavoring to design a controller that can vary the torque induced in the rotor of the motor. To do this, the induction motor controller will ... for an induction motor An induction motor is an asynchronous AC (alternating current) motor. The least expensive and most widely used induction motor is the squirrel cage motor. The major ... loop that can detect the outputs of an induction motor, we can use this motor controller to control an induction machine. • TMS320F243 DSP controller. This is manufactured by the Texas Instruments...

Ngày tải lên: 27/10/2013, 23:15

... thêm về TextBox và Label Controls Trong bài 1 quý vị đã làm quen với Label và TextBox controls.Bài này chúng tôi sẽ đi sâu vào một số Methods và Events thông dụng của 2 controls trên.Bây giờ chúng ... tên của control được sử dụng trong mã chương trình, còn caption là tên hiện ra trên thanh tiêu đề (title bar)của form. 2.Ðặt các controls với Properties như bảng1 dưới đây lên form LogIn Control ... phần.Bên trái là danh sách các Controls, bên phải là danh sách các Events của một control tương ứng. Muốn viết mã chương trình cho Event nào chỉ cần click vào tên Control và tên Event, sau đó...

Ngày tải lên: 10/12/2013, 01:15

... 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, ... 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 . . ... shown in Figure 2. 9.1.2 Customized solution It may be desirable to display the results with more control over the appearance of the plot. The following script plots the same results but shows how...

Ngày tải lên: 12/12/2013, 07:15

Ngày tải lên: 13/12/2013, 00:56

Ngày tải lên: 13/12/2013, 03:40

... Electronics Diode circuits Prof. C.K. Tse: Diode circuits Contents • Diode models • Typical diode circuits & applications • Load line concepts for nonlinear load analysis 12 Prof. C.K. Tse: Diode circuits Solution ... C.K. Tse: Diode circuits Step 2 : KVL & KCL constraints from KCL : i d = i R AND from KVL : v d + v R = V s We also know = + = V s O 2 Prof. C.K. Tse: Diode circuits What is ... the LOAD LINE. 7 Prof. C.K. Tse: Diode circuits Application examples clamper dc restorer half-wave doubler full-wave doubler 3 Prof. C.K. Tse: Diode circuits Ideal characteristic Bias conditions Forward...

Ngày tải lên: 13/12/2013, 22:15

Ngày tải lên: 14/12/2013, 12:15

Ngày tải lên: 14/12/2013, 20:16

... "BIBLIO.MDB" ' Place controls in Browse Mode SetControls (False) End Sub Private Sub CmdEdit_Click() ' Place controls in Edit Mode SetControls (True) End Sub Khi ta Delete ... công ty (Company Name) và điện thoại Chương Mười Bốn - Dùng Control Data Control Data Từ VB5, Visual Basic cho lập trình viên một control để truy cập cơ sỡ dữ liệu, tên nó chỉ đơn sơ là Data. ... thể thực hiện điều đó bằng cách dùng Control DBCombo (Data Bound Combo). Bạn hãy dùng IDE Menu Command Project | Components để chọn Microsoft Data Bound List Controls 6.0 rồi click Apply. Kế...

Ngày tải lên: 14/12/2013, 23:15

Ngày tải lên: 25/12/2013, 05:17

... with electromagnetic drive and power converter control circuits for its optimal control DESPOTOVIC ´ AND STOJILJKOVIC ´ : POWER CONVERTER CONTROL CIRCUITS FOR TWO-MASS VCS 459 Fig. 11. Amplitude ... voltage controlled os- cillator and controller output. This reference value is determi- nated by reference inputs, for amplitude and duration and for frequency. Both of these signals are controlled ... of freedom, which is shown in Fig. 5. The DESPOTOVIC ´ AND STOJILJKOVIC ´ : POWER CONVERTER CONTROL CIRCUITS FOR TWO-MASS VCS 457 Fig. 7. Simulation circuit of the VCS. system will be analyzed...

Ngày tải lên: 03/01/2014, 19:16

Ngày tải lên: 19/01/2014, 20:20

... Event Control of Manufacturing Systems 3.1 Introduction 3.2 Background on the Logic Control Problems Logic Control Definition • Control Modes • Logic Control Specification • Tasks of a Logic Control ... machine. The controller finite state machine will act to disable controllable events that should not happen in certain states. For a plant P and a controller C, both finite state machines, the controlled ... repeatedly. There are two distinct types of control systems in a typical automated manufacturing system: continuous control and discrete event control. Continuous control systems regulate continuous variables...

Ngày tải lên: 23/01/2014, 06:20

... Edition   !"#$"% 4 Programmability and Specialized Circuits Permanent Pacemaker Programmability !&''%( $"")%*"( &'+,-"(% """%(" *"""(% ""+ ."/-! /"'("' '%+0''"& (&%"(&%"+"1%" "%&"'+2"'&&'' '%(%"+ -((%%%"""1%( %*"'"+3%"" "(%""& %+%"" %"'&'+ 4%1%'"" &"+ 5! %"+2 67%89" !+:; %%-<+.%"'" "$"%%"((%" "%%''&""('& %"+"%%%&-'' %'"" '""+# ""%-'+3"'"% "%(&'("" %%+=-(...

Ngày tải lên: 24/01/2014, 01:20

... proportional controller can still vary some even when it is working well (although is should work much better than On/Off control) . More Advanced Control (PI) In order to make our cruise control ... information about controllable structures is detailed in the Appendix. We recommend that you read this information particularly if carrying out PID control. CONTROL STRATEGY The Control Strategy ... determined by a control strategy. A control strategy describes how the gate level is set when a condition is met at a control point. For a specific gate it is possible to have any number of control strategies...

Ngày tải lên: 25/01/2014, 12:20