Optimizing High Level Micro Stepping of
... As shown in Figure 4, a DAC is used to give voltage to VREFx with minimum resolution. For example, if a 10-bit DAC is used, and maximum value 1024 stands for 2.5 V, the DAC outputs 2.5 V/1024 = 2.4 mV each step. The regulated current in winding is measured by monitoring the voltage of the sense resi ...
... As shown in Figure 4, a DAC is used to give voltage to VREFx with minimum resolution. For example, if a 10-bit DAC is used, and maximum value 1024 stands for 2.5 V, the DAC outputs 2.5 V/1024 = 2.4 mV each step. The regulated current in winding is measured by monitoring the voltage of the sense resi ...
CF25485491
... depending on the harmonics present and the response of the meter to these harmonics. The problems caused by harmonic currents are overloading of neutrals, overheating of transformers, nuisance tripping of circuit breakers, over stressing of power factor correction capacitors and skin effects. Analys ...
... depending on the harmonics present and the response of the meter to these harmonics. The problems caused by harmonic currents are overloading of neutrals, overheating of transformers, nuisance tripping of circuit breakers, over stressing of power factor correction capacitors and skin effects. Analys ...
transformer regulated brushless generator
... to verify upon installation. To supply 60 HZ, the speed should be 1800 to 1860 RPM at no load and should not fall below 1800 RPM by more than one percent at full load. To supply 50 HZ, the speed should be 1500 to 1550 RPM at no load and 1500 RPM at full load. The generator voltage should build to it ...
... to verify upon installation. To supply 60 HZ, the speed should be 1800 to 1860 RPM at no load and should not fall below 1800 RPM by more than one percent at full load. To supply 50 HZ, the speed should be 1500 to 1550 RPM at no load and 1500 RPM at full load. The generator voltage should build to it ...
... operations with higher accuracy with 6 degrees of freedom with the help of FPGA kit .The arm will exhibit higher speed of operations and lower delay in processing due to the use of FPGA for processing and control .This will improve speed of operation and reduce the latency period of response when us ...
Network effects of line start permanent magnet synchronous motors
... The line-start permanent- magnet synchronous motor (LS-PMSM) has permanent magnets in its rotor, along with a squirrel cage starting winding. It can be contacted directly to the supply for starting and running. Its main advantage over an induction machine is that its efficiency can be considerably h ...
... The line-start permanent- magnet synchronous motor (LS-PMSM) has permanent magnets in its rotor, along with a squirrel cage starting winding. It can be contacted directly to the supply for starting and running. Its main advantage over an induction machine is that its efficiency can be considerably h ...
Printer Carriage Motion Control
... Switches are common devices that permit or interrupt the flow of current. In addition to simply controlling electrical power to a device (such as a motor or light), they can be used in motion control to detect whether or not a movable element has reached a predetermined position. Mechanical switches ...
... Switches are common devices that permit or interrupt the flow of current. In addition to simply controlling electrical power to a device (such as a motor or light), they can be used in motion control to detect whether or not a movable element has reached a predetermined position. Mechanical switches ...
Theory of Operations - University of Portland
... The project will use analog circuitry to control the otherwise unstable ball and beam system. The position of the ball will be sensed using a linear potentiometer configuration. The desired position will also use a linear potentiometer. The circuit will compensate for a critically damped system and ...
... The project will use analog circuitry to control the otherwise unstable ball and beam system. The position of the ball will be sensed using a linear potentiometer configuration. The desired position will also use a linear potentiometer. The circuit will compensate for a critically damped system and ...
Torque‐Speed Measurements
... torque at lower speeds. It also has the smoothest motion. At higher speeds, half‐step mode will have the most torque. FLIR pan‐tilts offer an auto‐step option. This setting will start the PTU out in eighth‐step mode at low speeds. It then switches to quarter‐step and finally half‐step at the spee ...
... torque at lower speeds. It also has the smoothest motion. At higher speeds, half‐step mode will have the most torque. FLIR pan‐tilts offer an auto‐step option. This setting will start the PTU out in eighth‐step mode at low speeds. It then switches to quarter‐step and finally half‐step at the spee ...
Aalborg Universitet Investigation of Flux-Linkage Profile Measurement Methods for Switched-Reluctance
... flux linkages are equal to the integral of the back EMF induced in the search coil. The search coil is open-circuited so in (1), i = 0 . The voltage to be integrated is equal to the terminal voltage. There is no need to measure the resistance. The instantaneous current in the excitation coil (phase ...
... flux linkages are equal to the integral of the back EMF induced in the search coil. The search coil is open-circuited so in (1), i = 0 . The voltage to be integrated is equal to the terminal voltage. There is no need to measure the resistance. The instantaneous current in the excitation coil (phase ...
ECM Motor - Price Industries
... airflow it is set for within 5%. As the primary air valve opens and less and less air is being pulled through the filter, and more air is coming down the valve, the motor slows down to compensate for less pressure drop to deliver the same airflow, within 5%. The ECM does this by measuring its own to ...
... airflow it is set for within 5%. As the primary air valve opens and less and less air is being pulled through the filter, and more air is coming down the valve, the motor slows down to compensate for less pressure drop to deliver the same airflow, within 5%. The ECM does this by measuring its own to ...
Current Sensor in Solid-State Meters: How digital
... voltage and current signal paths can be approximated by the following formula: Measurement error≈Phase mismatch ( in radian ) × tan(φ)× 100% (1) In the above expression, φ represents the power factor phase angle between the voltage and current. As one can see, a phase mismatch of 0.1° will result ...
... voltage and current signal paths can be approximated by the following formula: Measurement error≈Phase mismatch ( in radian ) × tan(φ)× 100% (1) In the above expression, φ represents the power factor phase angle between the voltage and current. As one can see, a phase mismatch of 0.1° will result ...
Capacitors for AC motor applications
... (P2) the capacitor has been designed to fail only in case of circuit cut-off and it is protected against fire and electrocution risk. (P1) the capacitor can fail either by a circuit cut-off or by a short-circuit and it is protected against fire and electrocution risk. (P0) in case of failure, the ca ...
... (P2) the capacitor has been designed to fail only in case of circuit cut-off and it is protected against fire and electrocution risk. (P1) the capacitor can fail either by a circuit cut-off or by a short-circuit and it is protected against fire and electrocution risk. (P0) in case of failure, the ca ...
SEMESTER-I - National Institute of Technology Mizoram
... controlled rectifiers operating in different modes and configurations. Analysis of series and separately excited DC motors fed from different choppers for both time ratio control and current limit control, four quadrant control. Single quadrant variable speed chopper fed DC drives. Four quadrant var ...
... controlled rectifiers operating in different modes and configurations. Analysis of series and separately excited DC motors fed from different choppers for both time ratio control and current limit control, four quadrant control. Single quadrant variable speed chopper fed DC drives. Four quadrant var ...
Design Analysis of a Remote Controlled “Pick and Place”
... not the control voltage is on or off. The amount of time that a pulse is on during a 2ms time frame dictates the servos position. This time frame, or sequence, repeats around 50 times per second. During the first half of this 2ms time frame, the pulse is always on. This starts a counter, so to speak ...
... not the control voltage is on or off. The amount of time that a pulse is on during a 2ms time frame dictates the servos position. This time frame, or sequence, repeats around 50 times per second. During the first half of this 2ms time frame, the pulse is always on. This starts a counter, so to speak ...
45 An OR Operation In this example an OR operation is used in
... this example the timer has been set for 5 seconds. When S1 is closed, TR1 begins timing. When 5 seconds have elapsed, TR1 will close its associated normally open TR1 contacts, illuminating pilot light PL1. When S1 is open, deenergizing TR1, the TR1 contacts open, immediately extinguishing PL1. This ...
... this example the timer has been set for 5 seconds. When S1 is closed, TR1 begins timing. When 5 seconds have elapsed, TR1 will close its associated normally open TR1 contacts, illuminating pilot light PL1. When S1 is open, deenergizing TR1, the TR1 contacts open, immediately extinguishing PL1. This ...
Sabertooth 2x5 User`s Guide
... Simplified serial uses TTL level single-byte serial commands to set the motor speed and direction. This makes it easy to interface to microcontrollers and PCs, without having to implement a packet-based communications protocol. Simplified serial is a one-direction only interface. The transmit line f ...
... Simplified serial uses TTL level single-byte serial commands to set the motor speed and direction. This makes it easy to interface to microcontrollers and PCs, without having to implement a packet-based communications protocol. Simplified serial is a one-direction only interface. The transmit line f ...
Kirby_4Nov08_Ned - Indico
... Mechanical protection of the Nb3Sn in the strand At 150 MPa the strand starts to degrade. What can be done? : – Don’t let the strand see that stress! – Make larger coils/magnets with low stresses. – Protect the filaments with a tough collar and or, more copper around the filaments (this may be need ...
... Mechanical protection of the Nb3Sn in the strand At 150 MPa the strand starts to degrade. What can be done? : – Don’t let the strand see that stress! – Make larger coils/magnets with low stresses. – Protect the filaments with a tough collar and or, more copper around the filaments (this may be need ...
Transporting Atoms Using a Magnetic Coil Transfer System
... spherical when it resides within the MOT. During the transfer process the cloud is elongated along the transfer direction and compressed along the other two coordinates. We need to decide how quickly we want to transition between these two states. We have developed the electronics to drive one coil ...
... spherical when it resides within the MOT. During the transfer process the cloud is elongated along the transfer direction and compressed along the other two coordinates. We need to decide how quickly we want to transition between these two states. We have developed the electronics to drive one coil ...
Printable Version of Questions for Evaluation Test
... 82. A center pivot irrigation machine may have hand-portable motors. True or False 83. What is the minimum size copper equipment grounding conductor required for a 400 ampere branch circuit? The ungrounded conductors are sized using an adjusted value from the 90 C column of T310.16. The ungrounded c ...
... 82. A center pivot irrigation machine may have hand-portable motors. True or False 83. What is the minimum size copper equipment grounding conductor required for a 400 ampere branch circuit? The ungrounded conductors are sized using an adjusted value from the 90 C column of T310.16. The ungrounded c ...
Isolation in AC Motor Drives: Understanding the IEC 61800-5
... and recirculating pumps, blowers, compressors, factory robotics, and many other applications. More than 300 million industrial electric motors are in use worldwide, with the number growing steadily every year. Adjustable-speed electrical power-drive systems, ...
... and recirculating pumps, blowers, compressors, factory robotics, and many other applications. More than 300 million industrial electric motors are in use worldwide, with the number growing steadily every year. Adjustable-speed electrical power-drive systems, ...
Monitoring & Feedback Control
... Controller Needs to Perform: • Digital Sampling of Primary and Secondary Current or Use Turns Ratio to Calculate Secondary • Calculate RMS Current on 1/2 cycle basis • Respond to process changes on 1/2 cycle basis (Use Predictive Feedback) • Self teach relationship between current and % available cu ...
... Controller Needs to Perform: • Digital Sampling of Primary and Secondary Current or Use Turns Ratio to Calculate Secondary • Calculate RMS Current on 1/2 cycle basis • Respond to process changes on 1/2 cycle basis (Use Predictive Feedback) • Self teach relationship between current and % available cu ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... IM control technique using direct torque control (DTC), was introduced about a few year ago, has a relatively simple and wide range of control structure at least as good as the FOC technique . It is also known that DTC drive is less sensitive to parameter changing. DTC method is based mainly on spac ...
... IM control technique using direct torque control (DTC), was introduced about a few year ago, has a relatively simple and wide range of control structure at least as good as the FOC technique . It is also known that DTC drive is less sensitive to parameter changing. DTC method is based mainly on spac ...
Brushed DC electric motor
A brushed DC motor is an internally commutated electric motor designed to be run from a direct current power source. Brushed motors were the first commercially important application of electric power to driving mechanical energy,and DC distribution systems were used for more than 100 years to operate motors in commercial and industrial buildings. Brushed DC motors can be varied in speed by changing the operating voltage or the strength of the magnetic field. Depending on the connections of the field to the power supply, the speed and torque characteristics of a brushed motor can be altered to provide steady speed or speed inversely proportional to the mechanical load. Brushed motors continue to be used for electrical propulsion, cranes, paper machines and steel rolling mills. Since the brushes wear down and require replacement, brushless DC motors using power electronic devices have displaced brushed motors from many applications