Saturday, April 30, 2011

Control Tuning Servo Motor

IntroductionTo paraphrase an adage, there are two types of motioncontrol engineers, those that are comfortable tuning aservo loop, and those that aren’t. And if you are one ofthose engineers that aren’t comfortable, you in turn, have twooptions. The first is to use a non-servo device such as a step motor,and the second is to get comfortable!Whether...
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Thursday, April 28, 2011

Control servo motor control-Velocity Profiling

A velocity profile is a graph of the velocity of a motor vs. time. The area inside the curve that the velocity profile creates is the distance traveled. Velocity profiling is useful for applications where specific velocities are necessary at specific times. Two typical velocity profiles are shown in the following figures.These two figures...
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Monday, April 25, 2011

Control Types of Stepper Motors

Stepper motors come in two varieties: permanent magnet and variable reluctance. (The reader may be familiar with hybrid motors, which are indistinguishable from permanent magnet motors from the controller's point of view.) Permanent magnet motors usually have two independent windings, with or without center taps. Center-tapped windings are...
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Control A Digital Thermometer Using AT89C2051

The system presented in this application note implements a simple digital thermometer that includes a built-in LCD and RS-485 communicate ion Port. It is designed around Atmel’s AT89C2051 processor, a digital thermometer/thermostat from Dallas Semiconductor, a small 8 X 2 LED backlit LCD, and an RS485 line interface. The system, shown in...
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Sunday, April 24, 2011

Control USB Protocol as implementation for microcontroller

USB provides a serial bus standard for connecting devices. USB 1.1, though USB 2.0 is more prominent. The host detects addition and loads the appropriate driver if installed. There are two types of connectors;- Type A.- Type B.Type A sockets found on hosts and hubs. It is always upstream. Type B plugs are found on devices. It is always downstream....
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Control Precision Temperature Sensor with LM335

The LM335 series are precision, easily-calibrated, integrated circuit temperature sensors. Operating as a 2-terminal zener, the LM335 has a breakdown voltage directly proportional to absolute temperature at +10 mV/°K. With less than 1W dynamic impedance the device operates over a current range of 400 μA to 5 mA with virtually no change in...
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Control Digital clock as Implementation of microcontroller

Electronic clocks have predominately replaced the mechanical clocks. They are much reliable, accurate, maintenance free and portable. In general, there are two kinds of electronic clocks. They are analog clock and digital clock. But digital clocks are more common and independent of external source. It would be needed the controlled devices...
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Control ADC 0803 using for Digital a Transducer Interface Output

The ADC0803 family is a series of three CMOS 8-bit successive approximation A/D converters using a resistive ladder and capacitive array together with an auto-zero comparator. These converters are designed to operate with microprocessor-controlled buses using a minimum of external circuitry. The 3-State output data lines can be connected...
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Saturday, April 23, 2011

Control A Digital Thermostat using ADC0803

The schematic of a Digital Thermostat is shown in Figure 16. The A/D digitizes the output of the LM35, a temperature transducer IC with an output of 10 mV per °C. With VREF/2 set for 2.56 V, this 10 mV corresponds to 1/2 LSB and the circuit resolution is 2 °C. Reducing VREF/2 to 1.28 yields a resolution of 1 °C. Of course, the lower VREF/2...
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Control 1-Wire on Microcontroller Interface

The PIC microcontrollers have multiple General Purpose I/O (GPIO) pins, and can be easily configured to implement Maxim/Dallas Semiconductor’s 1-Wire protocol. The 1-Wire protocol allows interaction with many Maxim/Dallas Semiconductor parts, including battery and thermal management devices, memory, I Button, etc. 1-Wire devices provide...
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Control Servo Motor Motion Profiles - S-Curve

All servo systems consist of some kind of movement of a load. The method in which the load is moved is known as the motion profile. A motion profile can be as simple as a movement from point A to point B on a single axisThe S-curve motion profile allows for a gradual change in acceleration. This helps to reduce or eliminate the problems caused...
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Friday, April 22, 2011

Control Servo Motor Motion Profiles - Trapezoidal

All servo systems consist of some kind of movement of a load. The method in which the load is moved is known as the motion profile. A motion profile can be as simple as a movement from point A to point B on a single axisThe trapezoidal motion profile slopes the velocity curve to create predictable acceleration and deceleration rates. A trapezoidal...
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Thursday, April 21, 2011

Control DC Servo motor Controller with Microcontroller Project

This is an experiment on the closed loop DC servomotor control system (SMC). It will able to be used for practical use with/without some modifications. The closed loop servo mechanism requires real-time servo operations, such as position control, velocity control and torque control. It will be suitable for implementation to any embedded 32...
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Thursday, April 14, 2011

Control Handheld Ultrasonic Rangefinder

Our ultrasonic rangefinder is capable of allowing the user to determine his or her distance from an object or wall. When deciding on what type of project to design and construct, we decided that we wanted to create something that would have some practical use in life. Many groups in the past created video games, but we wanted to be different. We considered issues such as safety, user interface, and ease of use, and came up with...
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Sunday, April 10, 2011

Control Sensorless Direct Torque Control

A Robust Sensorless Direct Torque Control of InductionMotor Based on MRAS and Extended Kalman FilterAbstractIn this paper, the classical Direct Torque Control (DTC) ofInduction Motor (IM) using an open loop pure integration suffersfrom the well-known problems of integration especially in thelow speed operation range is detailed. To tackle...
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Saturday, April 9, 2011

Control Direct Torque Control of Induction Motor with FUZZY

Genetic Algorithm Optimized PI and Fuzzy Sliding ModeSpeed Control for DTC DrivesAbstract— This paper presents a detailed comparison betweena conventional PI controller and a variable structure controllerbased on a fuzzy sliding mode strategy used for speed controlin direct torque control induction motor drive. Genetic algorithmsare used...
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Control Direct Torque Controlled Motor Drive

Direct Torque Controlled Induction Motor Drive Direct Torque Controlled Induction Motor Drive 1Direct Torque Controlled Induction Motor Drive 2Direct Torque Control of Induction Motor with FUZZYDirect Torque Control of the Asynchronous MotorDirect Torque Control of the Asynchronous MotorOtherSensorless Direct Torque Cont...
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Friday, April 8, 2011

Control Direct Torque Control of the Asynchronous Motor

SIMULATION OF DIRECT TORQUE CONTROLLED PERMANENT MAGNET SYNCHRONOUS MOTOR DRIVEABSTRACTIn this study, the structure and the control methods ofpermanent magnet synchronous motor (PMSM) areanalysed and a simulation is realized usingconventional Direct Torque Control (DTC) method.As a result of this analysis, it is observed that theincrease...
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Thursday, April 7, 2011

Control Direct Torque Controlled Induction Motor Drive 2

DIRECT TORQUE CONTROL FOR INDUCTION MOTORUSING INTELLIGENT TECHNIQUESABSTRACTIn this paper, we propose two approach intelligent techniquesof improvement of Direct Torque Control (DTC) of Inductionmotor such as fuzzy logic (FL) and artificial neural network (ANN),applied in switching select voltage vector .The comparison withconventional direct...
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Wednesday, April 6, 2011

Control Direct Torque Controlled Induction Motor Drive 1

HIGH – PERFORMANCE ADAPTIVE INTELLIGENT DIRECTTORQUE CONTROL SCHEMES FOR INDUCTION MOTOR DRIVESABSTRACT This study presents a detailed comparison betweenviable adaptive intelligent torque control strategies of inductionmotor, emphasizing advantages and disadvantages. The scopeof this study is to choose an adaptive intelligent controller forinduction...
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Tuesday, April 5, 2011

Control Types of Induction Motor Drive Controllers

There are many different ways to drive an inductionmotor. The main differences between them are themotor’s performance and the viability and cost in itsreal implementation.1.1- Voltage/Frequency:Despite the fact that V/F is the simplest controller, itis the most widespread, reaching approximately 90%of the industrial applications. It is known as a scalarcontrol and acts imposing a constant relation betweenvoltage and frequency....
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Saturday, April 2, 2011

Control Servo motor control - Feedforward with PIV control

Fundamentals of servo motion controlFeedforward controlThat missing ingredient provided we have access to bothVelocity and acceleration commands, synched up withposition commands is feedforward control.An example of how feedforward control may be used inparallel with disturbance rejection control is shownin figure 8. The key is to accurately...
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Friday, April 1, 2011

Control AC Servo Motor Control Algorithm

A precise control of AC servo motor using neuralnetwork PID controllerA new control technique based on a neural network, is proposedhere for control of AC servo motors. The PID control is widelyused in servo systems as it has simple structure, safety andreliability. However, it has certain problems in a complex system,resulting in imperfect...
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