control circuits for induction motors

... Electronics Devices, Circuits and Applications  E Levi, Liverpool John Moores University, 2002 74 6. POWER ELECTRONIC CONTROL OF INDUCTION MOTORS 6.1 Introduction Three-phase induction motors are the ... slip-ring induction machines the three-phase rotor winding may be approached as well. Thus the speed of an induction machine may be controlled by controlling the stator AC supply for both types of induction ... been introduced in Chapter 4 in its single-phase form and is the most frequently applied power supply source for V/f control of induction motors The second one, current source inverter

Ngày tải lên: 11/07/2014, 05:20

... The performance of induction motors is closely related to guarantee its health operational condition. Although the robustness and reliability of induction motors is relatively high, some unforeseen ... system for more types of induction motors and electromechanical systems faults detection. 18 CHAPTER 2 INDUCTION MOTOR AND DATA COLLECTION 2.1 Introduction 2.1.1 Structure of Induction Motor Induction ... Preparation for SVM Before doing SVM, inputs data need special transformation for guaranteeing the good performance of classification. The feature extraction or feature selection is generally used for

Ngày tải lên: 30/09/2015, 13:41

... still available to users for development of their own applications VF control provides a simple and cost efficient method for open-loop speed control of 3-phase induction motors A low-cost VF solution ... microcontrollers have three on-chip hardware PWM modules, making them suitable for 3-phase motor control applications This application note explains how these microcontrollers can be used for ... these microcontrollers can be used for 3-phase AC induction motor control  2004 Microchip Technology Inc VF CONTROL A discussion of induction motor control theory is beyond the scope of this document

Ngày tải lên: 11/01/2016, 14:35

... IPCOMM Communication Software for Stepper Motors Control Units IPP, GSP, GCD and GLD Manual 1120-A010 GB phytron® IPCOMM Communication Software for Stepper Motor Control Units IPP, GSP, GCD and ... steps with IPCOMM Remark: For most of the users Microsoft® Windows® is a familiar operating system Therefore, we take for granted the application of windows specific inputs for the MC-COMM operation, ... • For programming commands and other information about your control units, please refer to the special programming manuals and hardware manuals of your devices • Parameters stored in your control

Ngày tải lên: 03/10/2017, 14:27

... the control of induction motor complex and call for use of a high performance control algorithms such as “vector control? ?? and a powerful microcontroller to execute this algorithm Scalar control ... (V/f) Control of 3-Phase Induction Motors Copyright © 2013, Texas Instruments Incorporated Scalar Control www.ti.com Scalar Control 3.1 Technical Background In the V/Hz control, the speed of induction ... (V/f) Control of 3-Phase Induction Motors Bilal Akin and Nishant Garg ABSTRACT This application report presents a solution to control an AC induction motor using the TMS320F2803x microcontrollers

Ngày tải lên: 14/09/2020, 10:20

... proposed control system is applied for the Induction servomotor speed tracking control Moreover, for illustrating the superior of the proposed control scheme, the experiments of the proposed controller, ... objective is to control motor speed to move periodically for a periodic step and to move periodically for a sinusoidal command For comparison, a PI controller is implemented to control the induction ... of the PI controller and AWFCMAC controller Sinusoidal command PI Controller ACMAC Controller AWFCMAC Controller MSE 5.6 RPM 4.12 RPM 3.31 RPM Periodic step command PI Controller CMAC Controller

Ngày tải lên: 25/10/2022, 12:26

... LRN Analog and Digital Circuits for Electronic Control System Applications TEAM LRN This page intentionally left blank TEAM LRN Analog and Digital Circuits for Electronic Control System Applications ... additional timing signals for the control of circuits As shown in Figure 6-6a, some of the circuits controlled by the clock trigger on the rising edge of the clock pulse, while other circuits trigger ... and digital circuits for electronic control system applications : using the TI MSP430 microcontroller / by Gerald Luecke p cm ISBN 0-7506-7810-0 Electronic circuit design Electronic control Programmable

Ngày tải lên: 26/01/2023, 12:34

... is controlled accordingly Basic Clock System Control Registers The basic clock system is set up (configured) by using three control registers, the DCOCTL (the digitallycontrolled oscillator control ... time-varying signals, 56 Timer_A control register, 113 TEAM LRN 310 Index time constant, 58 time interval, 106 timing, 90 timing and control circuits, 84 timing circuits, 91 timing circuits (clocks), TLV1549, ... FITNESS FOR A PARTICULAR PURPOSE If the information provided on this CD-ROM contains medical or health sciences information, it is intended for professional use within the medical field Information

Ngày tải lên: 26/01/2023, 12:35

... adherent cells, responded well to LPS for IL-12 production, but weakly for production of IFN-c and NO. The macrophages also responded well to IFN-c for NO production. For production of IFN-c by stimulation ... absorbance was measured at 450 nm. Quantification of each cytokine (in ngÆmL )1 for IFN-c andinpgÆmL )1 for IL-12p70) was performed based on the standard curve in each assay. Preparation of nuclear ... (Tris/borate/EDTA; 22.5 m M /22.2 m M /0.5 m M ) for analysis by autoradiogra- phy. Before starting the binding reaction, nuclear extracts were incubated for 20 min on ice in the presence or absence of

Ngày tải lên: 17/03/2014, 10:20

... problem for this particular robot may be solved by applying the dierent control laws, as outlined above for dierent modes The conditions for exiting the modes have been dened as well For each ... Conclusion We have developed a hybrid control scheme for a path-tracking four-wheel steered mobile robot, and shown how it can be analyzed for stability The basis for controller development is standard ... a transition condition and a new control mode is introduced Specialized controllers are developed for such modes With the control automaton completed, we found for each mode, Lyapunovlike functions,

Ngày tải lên: 22/03/2014, 11:20

... its value is a measure for. .. allow for such arbitrary encoding of regions of support However, finding these regions reliably is a difficult computational problem For example, in the ... and practical implementation of constraint satisfaction networks for motion perception It also presents a principled xii FOREWORD development of a series of analog VLSI chips that ... successfully through a dynamic environment, and we use predominantly visual information to do so A sense of motion is crucial for the perception of. .. subjective task, constrained by the

Ngày tải lên: 01/06/2014, 07:54

... and uses it to provide feedforward assistance with a compliant position controller The goal of robotic therapy control algorithms is to control robotic devices designed for rehabilitation exercise, ... low-level force control also, for example, in control of pneumatic [21,22,27] and cable-based actuators [8,14,18,19,26,3235], but these advances are not the focus of this article Assistive controllers ... position feedback for providing assistance More recent controllers have used more sophisticated forms of mechanical impedance than stiffness, including for example viscous force fields [71,77],

Ngày tải lên: 19/06/2014, 08:20

... immediate mounting for patients’ forearm Controller architecture The general control architecture consists of three blocks: 1) target motion generator; 2) force filed generator; 3) performance evaluator ... serial structure, with direct drive by the motors: one motor for pronation/supination, one motor for flexion/ extension and two parallel coupled motors for abduction/adduction that allow to balance ... workspace low friction and direct drive motors enhance the backdriveability of the manipulandum, thus simplifying its control without needing a closed loop force control scheme The mechanical range

Ngày tải lên: 19/06/2014, 08:20

... than before it was added In the absence of pollutant reductions at an existing source which is within administrative control, it may be necessary to negotiate for, and probably pay for, emission ... noncombustibles are removed and the waste is reduced to a more uniform size. Environmental Protection Agency, " ;Control Techniques for Particulate Emissions from Stationary Sources" gives ... thereby reducing fuel consumption (4) Fuel oil burners. Fuel oil may be prepared for and the formation of air pollutants. For each particular combustion by use of mechanical atomizing type fuel there

Ngày tải lên: 20/06/2014, 17:20

... conventional cyclone, providing a greater separating force for the same inlet velocity and a shorter distance for the parti- cle to migrate before reaching the cyclone walls. These units may be ... recommended technique for obtaining the most reliable information concerning the variation of pollutant concentration in the real atmosphere. Discrete sampling can be used for plume tracking and ... together 2 with formaldehyde, a red-violet compound is formed which is then measured spectrophotometrically. This method is a discrete instrumental sampling method, but may be modified for continuous

Ngày tải lên: 20/06/2014, 17:20

... (See para 7-5 for additional information on materials selection for pollution control systems). b. Erosion. Erosion is the single most important criterion in specifying the materials for cyclone ... used for particle collection with several sieve (perforated) plates combining to form a sieve-plate tower. In some designs, impinge- ment baffles are placed a short distance above each perforation ... 6-2 illustrates the optimum expected perform- 6-6. Cyclone performance application in combustion processes. a. Collection efficiency and pressure drop. For any given cyclone it is desirable to

Ngày tải lên: 20/06/2014, 17:20

... of the more effective resistivity and therefore particulate emissions are more methods for the control of emissions from incinerators. difficult to control with cold precipitation. Figure 8-2 ... the use induced by sparking. For high temperature operation, of silicon controlled rectifiers (SCR). Other modern the most common transformer cooling method is liquid control devices are saturable ... steel construction with insulation made for weatherproofing against freezing and lagging on the outer surface. For wet conditions. scrubbing practice, chimneys for vapor-satu- (2) Pumps. Centrifugal

Ngày tải lên: 20/06/2014, 17:20

... Factors affecting the formation of SO . x (1) 503 formation increases as flame temperature increases. Above 3,150 degrees Fahrenheit, 503 formation no longer increases. (2) SO formation increases ... This effectively reduces gas out. A rotary air valve is best suited for this purpose. temperatures and allows close control of c. For low solids flow, a manual device such as a filtering temperatures. ... must be provided for maintenance. Compartmented units have the advantage of being able to remain on-line while one section is out for maintenance. Walkways should be provided for access to all

Ngày tải lên: 20/06/2014, 17:20

... possible to control requirements, specify a certain zeolite for the separation of — Local construction costs, plant labor costs, a particular material. Zeolites possesses and cost for chemicals, ... oxides formed x are nitric oxide (NO) which represents 90-95 percent (%) of the NO formed and nitrogen dioxide (NO ) x 2 which represents most of the remaining nitrogen oxides. b. NO formation. ... combustion control system to regulate and monitor the exact proportioning of fuel and air For pulverized coal fired boilers, this may mean the additional expense of installing uniform distribution

Ngày tải lên: 20/06/2014, 17:20

... gas clean-up for particulate. Either an elec- — low cost trostatic precipitator or a baghouse may be used for — waste materials particulate control. Basic guidelines established for (7) High ... be sold for use in (3) Control response almost instantaneous other products. (4) Use of partial bed slumping as load control (2) Some potential uses of the ash are: aggregate mechanism for bubbling ... temperature of control emissions makes this technology operation. particularly suited for applications where (4) Pressurized fluidized bed boilers continue in stringent emissions control regulations

Ngày tải lên: 20/06/2014, 17:20