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Topic: Motor drive

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	eDrive Magazine — Motors and Drives Conference
		The 2007 Motor and Drive Systems Conference took place February 7-8 in Dallas, Texas and featured more than 30 technical presentations from today's foremost leaders in electric motor, drive and motion control technology.
		The TPM+ servo actuator is comprised of a high precision gearhead, a high-pole motor and feedback all integrated into a single package.
		The newly renamed unit is a major manufacturer of encoders and resolvers used in machine motor and factory automation motion control.
	www.e-driveonline.com (1062 words)

	Motor drive - Wikipedia, the free encyclopedia
		At first, motor drives were external units that attached to the basic camera body, normally beneath it, with an interface consisting of a physical drive socket and some electrical contacts to signal the drive when to actuate.
		Beginning in the late 1970s, motor drives began to be integrated into cameras themselves—at first, in compact cameras for the beginner market, and by the 1980s, in amateur-grade and later professional-grade single lens reflex cameras.
		Motor drives for compact and amateur cameras wind slowly—shot-to-shot intervals of approximately a second are commonplace.
	en.wikipedia.org /wiki/Motor_drive (388 words)

	AC Motor Drive Power Quality: (Site not responding. Last check: 2007-10-28)
		This paper also examines the analysis of AC motor drive circuits from the standpoint of the IEEE 519-1992 standard and presents a case where the standard is applied during the analysis of data.
		Many drive manufacturers put MOV’s at the front end of their power circuits to clip transients but the MOV’s can not usually be chosen to clip enough of the harmful peak off and still perform reliably as protectors from external transients of non-ringing origin.
		Very often, drive manufacturers install line reactors on the load side of a drive but these reactors are solving a different problem, relating to motor in-rush current and output impedance, than the line side reactors required to dampen ringing.
	www.currentthinking.com /pqresource/acmotor.htm (3240 words)

	Ac motor drive
		drive electric kit motor, electric motor drive ac motor drive or bicycle drive electric kit motor to drive jet motor outboard and drive floppy motor stepper.
		drive floppy motor, ac ac drive flux motor vector and nikon motor drive or drive hydraulic motor.
		drive floppy motor stepper to drive motor olympus, drive motor toshiba.
	www.ics-repair.com /ad/part1/ac_motor_drive.htm (201 words)

	Legacy Motor Drive
		The first is due to the high cost of a motor drive from the makers of the mill, it sells for about $800 which I think is a bit high for what it does.
		The drive unit is an automotive windshield wiper motor which has a gear reduction drive train.
		This motor will dissipate about 40 watts when running, the motor sold by Legacy would be about the same so I believe this issue would exist with that unit as well.
	benchmark.20m.com /tools/LegacyMill/LegacyMotorDrive/legacy_motor_drive.html (849 words)

	Sky-Watcher Telescopes. Motor Drives (Site not responding. Last check: 2007-10-28)
		Motor, hand controller, and battery case are included.
		These dual axis motor drives, designed for EQ3-2 and EQ5 mounts, are essential in long-explosure astrophotography.
		Motors for both axes, clutches, cables, hand controller, and battery case are included.
	www.skywatchertelescope.com /MotorDrives.html (200 words)

	Motor Drive 2 (Site not responding. Last check: 2007-10-28)
		A maximum sequential filming speed of 5 frames per second without mirror lock-up is the fastest among motor drives generally available on the market.
		After film is inserted and the rear cover closed, the motor automatically advances two frames to come to the initial exposure position.
		When the counter reaches "0", film advance and shutter release are both stopped and the LCD graphic display indicates the beginning of the motor driven rewind procedure which requires pushing the Rewind Release Button on the camera and turning the Rewind Lever on the motor drive.
	www.star.ucl.ac.uk /~rwesson/esif/om-sif/motordrivegroup/motor_drive_2.htm (495 words)

	NASM Space Artifacts: Ritchey Mirror Grinding Machine Motor and Drive (Site not responding. Last check: 2007-10-28)
		This motor and drive system that date to 1966-1967 were modifications to the mirror grinding machine built by George Ritchey at the Yerkes Observatory.
		It was common practice in the late 1890's to drive machinery from a single electric motor by means of shafts, belts and pulleys.
		The motor and drive in the collection represent a replacement unit that dates to 1966-1967 used specifically for the grinding machine.
	www.nasm.si.edu /research/dsh/artifacts/SS-RitcheyMachineMotor.htm (259 words)

	e-Drive Online (Site not responding. Last check: 2007-10-28)
		This two-day conference is focused on the latest advancements and economics in electric motor and drive technology.
		Topics discussed will include new motors and drives, system design and integration for optimum performance, new components and materials, advancements in electronics and control, testing systems and techniques.
		Serving OEM design engineers and product developers that integrate motors and drives into their products and equipment; developers and manufacturers of motors, drives and integrated systems; component, material and technology providers.
	www.e-driveonline.com /motors_conf_index.htm (225 words)

	Electric motor drive
		baldor motor and drive servo motor drive and drive four home motor wheel, variable speed motor drive.
		drive floppy motor, ac ac drive flux motor vector (net.com pcb) nikon motor drive or drive hydraulic motor.
		drive floppy motor stepper, drive motor olympus or drive motor toshiba is direct drive hollow motor shaft, drive inverter motor 2 drive motor unipolar, direct drive machine motor washing by boat drive jet motor is drive high motor speed
	www.ics-repair.com /ad/part1/electric_motor_drive.htm (222 words)

	Motor Drives (Site not responding. Last check: 2007-10-28)
		Motor drives integrated with power supplies for the control of pumps.
		It is often the case that 'off the shelf' motor drive cards are not entirely suitable for a particular application.
		The motor clock is also accessible to the user, to enable accurate motor positioning.
	home.btconnect.com /winterandsmith/Motor_Drives/motor_drives.html (478 words)

	3-Phase Induction Motor Drive
		If it goes from high frequency to low frequency, then the motor acts like a generator feeding current to the inverter, this causes a low impedance, and therefore a overcurrent occurs.
		Outputs from opto-isolators (from right to left: Q1,Q2,Q3,Q4,Q5,Q6) drive high power darlintong stages, in turn this stages form a three phase inverter to drive a motor.
		Motors are typically designer for a certain rpm, if driven higher than this rpm, after a time, damage will occur to the bearings.
	www.geocities.com /the_beijing_dragon/drive.htm (611 words)

	DC Motor Drive (Site not responding. Last check: 2007-10-28)
		DC motor drives provide a simple and cost effective way of motorising many of the VG Scienta standard drive and manipulation products.
		The motor gearbox assembly is complete with local controls for speed and direction.
		The part codes for the drive fitted with a DC motor drive option are listed on the appropriate product pages.
	www.vacgen.com /catalogue/section-5/Motor_Drive.asp (220 words)

	Belt Reduction Motor Drive (Site not responding. Last check: 2007-10-28)
		3 pole motors, with heavy duty carbon brush gear and double ended 6mm drive shaft.
		The motor is mounted on a rugged 1.5mm steel right angle bracket.
		The final drive is delivered through two block mounted precision ballraces with a 6mm keyed steel output shaft.
	www.technobots.co.uk /en-gb/dept_430.html (142 words)

	AC Motor, AC Drive, Variable Frequency Drive, Induction Motor, Variable Speed Drive
		These drives can be configured using the built-in digital keypad (which also allows you to set the drive speed, start and stop, and monitor specific parameters) or with the standard RS485 serial communications port.
		Braking units are applied to absorb the motor regeneration energy when the three-phase induction motor stops by deceleration.
		Motors are available in a variety of horsepower ranges from.25 to 100 Hp.
	web2.automationdirect.com /adc/Overview/Catalog/AC_Drives_-z-_Motors (1762 words)

	PMS Motor & Motor-Drive Design
		This is an introductory course in PMS motor theory and the design of both PMS motors and motor-drives (controllers and power drivers) from an electronics design viewpoint.
		Presentation is largely by lecture slides, with some class exercises, and some detailed sections explaining motor theory.
		Introduction, motor (electric machines) book recommendation, quantities of electricity and magnetism, Maxwell's equations, magnetic reference frames, magnetic-electric analogs, inductance derivations.
	www.innovatia.com /PMS_Motor_&_Drive_Design.htm (349 words)

	Become.com - Shop results for motor drive
		This dual axis motor drive with drive corrector capabilities is designed for Celestron's CG 4 mount.
		The mount the telescope is equipped with is robust and compact and the...
		(Hardcover)-Electric Motors and Drives is intended for non-specialist users of electric motors and drives, filling the gap between academic textbooks (which are crammed with maths and theory not needed by most users) and the more prosaic...
	www.become.com /shop?q=motor+drive (534 words)

	dc motor drive research (Site not responding. Last check: 2007-10-28)
		DCDC converter current source fed naturally commutated brushless DC motor drive DCDC converter current source fed naturally commutated brushless DC motor drive The aim of this work is to reduce the cost DC Geared Motor Drives.
		Local manual controls forward and reverse drive variable speed control Power is provided from a V DC supply which is included with the DC motor drive package for the drive fitted with a DC motor drive option are listed on Find dc motor drive stores compare dc motor drive prices.
		Each motor is controlled by DCDC converter current source fed naturally commutated brushless DC motor drive DCDC converter current source fed naturally commutated brushless DC motor drive The aim of this work is to reduce the cost motor drive.
	www.boating-lights.info /dcmotors/dc-motor-drive.htm (446 words)

	Nv-based stepper motor drive
		It only drives the motor in one direction, but uses just a 74AC240 IC, four 0.1 uF capacitors, a 100 kOhm resistor, and two 47 kOhm resistors.
		In the Solarbotics diagram, the Yellow and Blue leads are the end contacts of one motor winding, and the Red and White leads are the end contacts of the other motor winding.
		In the case of the unipolar motor that Solarbotics sold, an additional two Green leads were the two windings' center taps, and left unconnected.
	library.solarbotics.net /circuits/driver_stepper_nv.html (150 words)

	Motor controller, brushless dc motor, ac motor drive, BLDC motor control, permanent magnet brushless dc motor, DC ...
		Motor controller, brushless dc motor, ac motor drive, BLDC motor control, permanent magnet brushless dc motor, DC motor, variable speed drive, VSD, motor driver, motor drive, fuel cell, electric vehicle, CAN bus, CANopen, SAE J1939, servo motor control, material handling equipment
		Controls for brushless dc motors, motor drives, variable speed drive, motor speed control, BLDC motor, DC motor, ac motor, dc motor used in fuel cells, material handling equipment and electric vehicles.
		Drives a BLDC pump motor used in fuel cells, material handling equipment and electric vehicles
	www.axiomatic.com /bldc-motor.html (231 words)

	Franklin Electric - EMPD - Integrated Motor Drive System (Site not responding. Last check: 2007-10-28)
		The IMDS joins an AC induction motor with state-of the-art electronic inverter speed controls providing the perfect combination for a variety of pumping, metering, material handling, packaging, air moving, mixing/stirring, food processing and other applications where variable speed is desired.
		With IMDS you are guaranteed the motor and drive are perfectly matched and ready to use, without additional programming or complicated wiring to perform.
		And by integrating the motor and drive into a single unit, we eliminated the historical AC motor failures due to voltage spikes and line voltage reflections (also known as standing wave or voltage ring-up).
	www.franklin-electric.com /empd/product/imds.html (594 words)

	DRS Technologies Inc. - Motor/Drive Design
		DRS applies a highly experienced team of motor and drive design professionals, with state of the art computer aided design, solid modeling and finite element analysis tools, to a broad range of motor and drive design projects.
		Our breadth in motor and drive design ranges from 4 HP to more than 25,000 HP.
		These motors are applied to a wide range of applications including industrial pumping, ship and vehicle propulsion, and pulsed power for electromagnetic guns and launchers.
	www.drs.com /products/index.cfm?gID=11&productID=484 (86 words)

	Migrating from the Legacy Diskette Drive: Ford Motor Company Case Study
		USB flash memory drives such as the Dell USB Memory Key are small removable storage devices that are equipped with flash memory storage.
		When a USB flash memory drive is inserted into a USB port, it provides additional storage to which files can be copied in the same way they are copied to a diskette—via the familiar drag-and-drop process.
		Ford Motor Company chose the bootable Dell USB Memory Key because it provides the alternative that is most compatible with their current solution and is flexible and scalable going forward.
	www.dell.com /content/topics/global.aspx/vectors/en/2003_ford?c=us&cs=04&l=en&s=bsd (1896 words)

	Stepper Motors
		The original floppy disk drive for IBM-PCs and compatibles was the Tandon TM100.
		With the arrival of PC clones and half-height drives, lots of other stepper motors came into use.
		Darlington transistor pairs on a chip to switch current to the coils in the motor.
	www.doc.ic.ac.uk /~ih/doc/stepper (303 words)

	Motor Vu Drive-In (Site not responding. Last check: 2007-10-28)
		The appearance of this drive-in, just on the outside, by the box office is very run-down, and not very inviting.
		What's unusual about this drive in, not to mention unattractive, is the fenced area near the front, under the screen.
		Two great family movies played back to back, and this was the only drive-in in Utah that I've found so far, that still plays those cheesy, but amusing intermission clips with the dancing hotdogs and whatever.
	www.drive-ins.com /theater/uttmot2 (492 words)

	Stepper Motor Drive at Controlmotion.Com (Site not responding. Last check: 2007-10-28)
		Stepper Motor Drive related phrases are on Controlmotion.Com.
		The 1st block is on behalf of connection of the motor in addition to power supplies, the second block being on behalf of logic connection.
		Related phrases are white motor controllers, schulze motor controllers, stepper motors oz in, industrial controls mississauga, and reversible 11 step 12vdc stepper motor.
	www.controlmotion.com /steppermotordrive.shtml (594 words)

	Motor Drive Belts (Site not responding. Last check: 2007-10-28)
		This is a replacement motor drive belt, part# 103417.
		This is a replacement motor drive belt, part# 106939.
		This is a replacement motor drive belt, part# 109560.
	www.treadmilldoctorstore.com /s.nl/sc.2/category.11/.f (94 words)

	Green Car Congress: Motor Assist Drive...for Jetliners
		Boeing Company and Chorus Motors have demonstrated the use of an onboard electric motor attached to the nose wheel of a Boeing 767 to allow jetliners to maneuver into and around gates.
		The Phantom Works/Chorus Motors team, in cooperation with Air Canada, installed an electric motor drive on an Air Canada 767 and conducted a series of tests.
		The net benefit is that the motor drive, which cannot output maximum current and voltage to a 3-phase motor at low speed, is capable of achieving torques exceeding five times that of what can be achieved in a 3-phase machine.
	www.greencarcongress.com /2005/08/motor_assist_dr.html (474 words)

	Marine motor drive unit mounting apparatus (US5186666)
		A device for setting the motor mounting members in a position displaced from the boat mounting members is connected between the boat mounting members and the motor mounting members.
		The setting device permits movement of the motor mounting members relative to the boat mounting members, to selectively and independently set the angular orientation, to set the distance between the boat plane and the motor plane, and to set the vertical translation of the motor plane relative to the boat plane.
		An apparatus for mounting a motor drive unit to a boat, the apparatus comprising:
	www.delphion.com /details?&pn=US05186666__ (244 words)

	Drive motor controller for low power disk drive (US5246479)
		A hard disk drive digital storage system provides increased power efficiency and reduced power losses by using a switching regulator type DC to DC power converter, to control spindle motor speed, in which a variable duty cycle, low "ON" resistance n-channel power MOSFET transistor is located near the ground side of the motor drive circuit.
		A sense resistor is connected between the converter and ground, and the voltage developed across this sense resistor provides a signal which is coupled to the motor control circuit to vary the duty cycle of the converter to regulate the peak current applied to the motor.
		Drive system for a DC motor with reduced power loss
	www.delphion.com /details?pn10=US05246479 (392 words)

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