Optimal design of switched reluctance motors
... Torque ripple is another frequently quoted problem with the switched reluctance motor. Indeed, it can be said that it produces torque by amplifying what is known as cogging torque—a parasitic “nuisance torque”—in other machines. At low speed it can be “controlled out” by shaping the current waveform ...
... Torque ripple is another frequently quoted problem with the switched reluctance motor. Indeed, it can be said that it produces torque by amplifying what is known as cogging torque—a parasitic “nuisance torque”—in other machines. At low speed it can be “controlled out” by shaping the current waveform ...
Tips for choosing high-accuracy linear positioning
... Trapezoidal commutation is less suitable for very precise scanning and constant-velocity applications. However, it is less expensive than sinusoidal commutation, so it is used extensively for high speed, point-to-point systems or on systems where motion smoothness will not affect processing. With si ...
... Trapezoidal commutation is less suitable for very precise scanning and constant-velocity applications. However, it is less expensive than sinusoidal commutation, so it is used extensively for high speed, point-to-point systems or on systems where motion smoothness will not affect processing. With si ...
troubleshooting the proportional system
... If no functions work or if all functions are slow when controlled by the pendant, but work correctly when the manual operation button is pressed on the proportional valve then the problem is with the proportional electronic control system. Proportional Valve Parameters ...
... If no functions work or if all functions are slow when controlled by the pendant, but work correctly when the manual operation button is pressed on the proportional valve then the problem is with the proportional electronic control system. Proportional Valve Parameters ...
6 position wall switch for 2-speed evaporative coolers to control high
... installing switch. The installer of this switch must be technically qualified for this type of installation. A qualified electrician should check all wiring and circuit breakers and be sure that the cooler installation is effectively grounded. ...
... installing switch. The installer of this switch must be technically qualified for this type of installation. A qualified electrician should check all wiring and circuit breakers and be sure that the cooler installation is effectively grounded. ...
MOTOR STARTER–PROTECTOR COMBO
... MSC device should not be exposed to sulphur (S) or chlorine (Cl) containing gases, and must be kept away from materials that can generate them. In particular, avoid the use of polyvinyl chloride (PVC) insulation in contact with the MSC terminals. 4. The MSC device should not be exposed to hydrocarb ...
... MSC device should not be exposed to sulphur (S) or chlorine (Cl) containing gases, and must be kept away from materials that can generate them. In particular, avoid the use of polyvinyl chloride (PVC) insulation in contact with the MSC terminals. 4. The MSC device should not be exposed to hydrocarb ...
Maximum Availability - Mitsubishi Automation
... This system can achieve high torques at low output frequencies. For example, at a frequency of 0.5Hz, 150% of the rated torque is generated on the motor shaft. With open-loop control, the speed adjustment range is 1:120 (and 1:200 in the FR-A700 series, which is the successor to the FR-A500 series). ...
... This system can achieve high torques at low output frequencies. For example, at a frequency of 0.5Hz, 150% of the rated torque is generated on the motor shaft. With open-loop control, the speed adjustment range is 1:120 (and 1:200 in the FR-A700 series, which is the successor to the FR-A500 series). ...
Analysis and Implementation of DSP Based Speed Control of Three
... (An ISO 3297: 2007 Certified Organization) ...
... (An ISO 3297: 2007 Certified Organization) ...
automatic turntalble - North River Railway
... Unsatisfied with what was available at the time, I built a turntable with several novel features. Because the North River already used a computer controlled block system it only seemed logical to use a computer to control the turntables too. At the time I worked with numeric controlled machines with ...
... Unsatisfied with what was available at the time, I built a turntable with several novel features. Because the North River already used a computer controlled block system it only seemed logical to use a computer to control the turntables too. At the time I worked with numeric controlled machines with ...
5.0 Starter Motors
... require a heavy current e.g. the heated rear windscreen (H.R.W.) circuit. If a relay was not used the contacts inside the HRW switch would need to be quite large to carry the heavy current. By using a relay, smaller switch contacts can be used. The relay then acts as a switch saver. Relays can be us ...
... require a heavy current e.g. the heated rear windscreen (H.R.W.) circuit. If a relay was not used the contacts inside the HRW switch would need to be quite large to carry the heavy current. By using a relay, smaller switch contacts can be used. The relay then acts as a switch saver. Relays can be us ...
Date: - ibookfi.com
... Unloaded start is not normally required with the 8-cylinder BW* compressor using the first part-winding (3/5) to start. The distribution of current to both windings is independent from the load: Winding on terminals 1-2-3 ...
... Unloaded start is not normally required with the 8-cylinder BW* compressor using the first part-winding (3/5) to start. The distribution of current to both windings is independent from the load: Winding on terminals 1-2-3 ...
Stepper motor
A stepper motor or step motor or stepping motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed.Switched reluctance motors are very large stepping motors with a reduced pole count, and generally are closed-loop commutated.