circuit diagram of stepper motor control using 89c51

Ngày tải lên: 19/06/2014, 08:20

... mechanical fatigue of induction motor will be reduced and life time will be extended C Terminal Voltage Control Controlling d means controlling the phase of vmers Fig shows phasor diagrams of voltages ... Applications of voltage control of induction motor were investigated Stability problem because of self-excitation of series com- 924 Authorized licensed use limited to: TOKYO INSTITUTE OF TECHNOLOGY ... Fig Equivalent circuits of series compensated induction motor for system frequency and self-excited frequency Oscillating current waveforms because of self-excitation of induction motor by MERS...

Ngày tải lên: 15/10/2013, 16:10

... was designed to control a brush-less DC motor However, by constructing a feedback loop that can detect the outputs of an induction motor, we can use this motor controller to control an induction ... throttle of the car) that will be fed into the command generator of the DSP controller The DSP controller will manipulate this control signal to produce signals that the induction motor can operate off ... develop a control strategy that varies the frequency and voltage of the signal applied to the windings of the induction motor, while controlling the flux created in the air-gap of the induction motor...

Ngày tải lên: 27/10/2013, 23:15

... Variation of DC bus voltage of a 3-in case of open loop PI control for constant V/f control method Figure 4.12: Variation of Torque of a 3-in case of open loop PI control for constant V/f control ... Simulation and Speed Control of Induction Motor Drives 2012 CHAPTER ANALYSIS OF VARIOUS METHODS FOR SPEED CONTROL OF IM The various methods of speed control of 3- Induction motor are as under: ... Appendix 3: MATLAB Code for Speed Control of 3- Induction motor using Constant V/f control 60 Appendix 4: MATLAB Code for Closed Loop Speed Control of 3- Induction motor using Constant V/f ...

Ngày tải lên: 18/12/2013, 22:06

Ngày tải lên: 29/03/2014, 15:20

Ngày tải lên: 19/06/2014, 08:20

Ngày tải lên: 19/06/2014, 08:20

Ngày tải lên: 19/06/2014, 08:20

Ngày tải lên: 19/06/2014, 10:20

Ngày tải lên: 12/08/2014, 18:20

Ngày tải lên: 05/08/2015, 13:57

Ngày tải lên: 09/09/2015, 11:08

... The control of injection timing when the timing control valve is ON is explained below The control when the timing control valve is switched between ON/OFF is explained in section 3-2 Timing Control ... Basic Control Method for Injection Timing In order to change the injection timing, the amount of fuel pressure added to the timer piston of the injection pump is controlled, and the position of ... The opening degree of these passages is controlled by the ON/OFF rate (duty ratio) of the current energized by the coil When the current is ON for a long time, the open time of the TCV becomes...

Ngày tải lên: 23/10/2012, 09:09

... repeating ON/OFF signal Solenoid Spill Valve Actuating Signal Solenoid Spill Valve Waveform Counter Electromotive Force End of Injection Current Control 11 SERVICE TECH Vol.468 03-10 Current Control ... (position) of the cam plate Pulsar Drive Shaft 2-3 Actuating the Solenoid Spill Valves The solenoid spill valve is directly linked to fuel injection volume control, so the responsiveness of the valve ... ECU opens (OFF) the solenoid spill valve at a position corresponding to the number of pulses (injection end position) calculated by the ECU The pulse count is based on the number of NE (Engine...

Ngày tải lên: 23/10/2012, 09:09

... efficiently, the reputational capital of an agent must equal the present value of the stream of future profits, or franchise value, of her business The concept of reputational capital is meaningful ... range and types of institutions apt to fill the whole spectrum of (sectoral and maturity) segments of the circuit, thus eliminating circuit discontinuities In particular, promotion of competition ... a presentation of monetary circuit theory, see Graziani, (1984, 1988, 1994, 1996) Messori (1988) offers a collection of important contributions from circuit theorists Monetary circuit theory...

Ngày tải lên: 24/10/2012, 09:33

... performance of the motor To reduce the effects of inductance, most types of driver circuits are designed to supply a voltage greater than the motor s rated voltage TYPES OF STEP MOTOR DRIVERS ... MODES Stepper motor "step modes" include Full, Half and Microstep The type of step mode output of any motor is dependent on the design of the driver FULL STEP Standard (hybrid) stepping motors ... MOTORS TYPES OF STEPPER MOTORS There are basically three types of stepping motors; variable reluctance, permanent magnet and hybrid They differ in terms of construction based on the use of permanent...

Ngày tải lên: 25/10/2012, 15:38

... eradication of planktonic residues but are not effective in eliminating micro-clusters disrupted from biofilms that may be the cause of recurrence after an indefinite period of time Fragments of biofilms ... populations are often missed by conventional culture The problem of diagnosis markedly increases taking into account the issue of bacterial phenotypes inside biofilms Sonication of explanted devices ... Comparison of Revision of the Acetabular Component without Cement A Concise Follow-up, biofilm-associated cell survival following in vitro exposure of meticil- at Twenty to Twenty-four Years, of a...

Ngày tải lên: 26/10/2012, 09:53

... lx) First of all, consumers were briefed on the concept of the methodology and the procedure The aim of this was to allow for development of the vocabulary to describe the four types of dry-cured ... carried out using XLSTAT software (Addinsoft, France) 2.4.2 Quantitative descriptive data analysis Data from the Quantitative Descriptive Analysis was analysed by means of the ANOVA test using the ... 55.58% of the Table Demographic, socio-economic characteristics and frequency of dry-cured ham consumption of the participants (% of respondents, n = 109) Socio-demographic characteristic % of respondents...

Ngày tải lên: 03/04/2013, 21:07