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Topic: Motor control

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	Motor controller - Wikipedia, the free encyclopedia
		A motor controller is a device or group of devices that serves to govern in some predetermined manner the performance of an electric motor.
		A motor controller might include a manual or automatic means for starting and stopping the motor, selecting forward or reverse rotation, selecting and regulating the speed, regulating or limiting the torque, and protecting against overloads and faults.
		A motor controller is connected to a power source such as a battery pack or power supply, and control circuitry in the form of analog or digital input signals.
	en.wikipedia.org /wiki/Motor_controller (880 words)

	Control
		Control is the operation mode of a control system which includes two subsystems: controlling (a controller) C, and controlled, S.
		Looked from the controller, the loop starts with its action and is followed by a perception, which is an action in the opposite direction: from the controlled to the controller.
		The concept of control is the cornerstone of cybernetics.
	pespmc1.vub.ac.be /CONTROL.html (697 words)

	Induction Motor Control
		The voltage rating of the motor is determined by the number of turns on the stator and the power rating of the motor is determined by the losses which comprise copper loss and iron loss, and the ability of the motor to dissipate the heat generated by these losses.
		Design F motors are used primarily in fan control applications with the motor mounted in the air flow.
		The slip ring motor has a set of windings on the rotor which are not short circuited, but are terminated to a set of slip rings for connection to external resistors and contactors.
	www.lmphotonics.com /m_control.htm (3475 words)

	Motor Control
		In an H-bridge circuit, the motor is placed at the center of an arrangement of transistors laid out in the shape of an "H".
		This allows bidirectional control of the motor by turning on transistors at opposite corners of the H. One pair switches forward current, the other reverse.
		These diodes are wired in parallel with the drive transistors to ensure that any switching transients generated by the motor coils or voltage generated by the spinning motor don't damage the transistors.
	www.pitt.edu /~sorc/robotics/handbook/MotorControl.htm (1280 words)

	ePanorama (Site not responding. Last check: 2007-11-06)
		Electronic Speed Control - The ESC Module shall have as input an R/C servo signal, and shall generate a modulated pulse whose width and polarity are proportional to width of that signal.
		The term servo motor is used by electric motor manyfacturers to define a motor that is specifically designed to operate in a closed-loop control environment where a feedback device, usually monitoring speed, current, position, etc. is used to control the performance of the motor.
		Those DC motors are controlled with a motor controller that have as input an R/C servo signal, and shall generate a modulated pulse whose width and polarity are proportional to width of that signal.
	www.epanorama.net /links/motorcontrol.html (14029 words)

	Motor skill - Wikipedia, the free encyclopedia
		A motor skill is a skill that regards the ability of an organism to utilize skeletal muscles effectively.
		Motor skills depend upon the proper functioning of the brain, skeleton, joints, and nervous system and thus motor skills involve the proper functioning of such systems.
		Motor development is the development of action and coordination of one's limbs, as well as the development of strength, posture control, balance, and perceptual skills.
	en.wikipedia.org /wiki/Motor_control (266 words)

	Eaton Corporation-Motor Control Centers
		Motor Control Centers (MCC) provide the best method for grouping motor control, associated control and distribution equipment.
		These are essentially a mechanical grouping of combination motor control, feeder tap and/or other units arranged in a convenient assembly.
		Factory wiring of required control wiring and load wiring through sizes 1 and 2 and control wiring only size 3 and larger is extended from the unit terminals to master terminal blocks of each vertical compartment.
	www.motorcontrolcenters.net (882 words)

	Jones on Stepping Motors
		Typically, all windings in the motor are part of the stator, and the rotor is either a permanent magnet or, in the case of variable reluctance motors, a toothed block of some magnetically soft material.
		All of the commutation must be handled externally by the motor controller, and typically, the motors and controllers are designed so that the motor may be held in any fixed position as well as being rotated one way or the other.
		Stepping motors can be used in simple open-loop control systems; these are generally adequate for systems that operate at low accelerations with static loads, but closed loop control may be essential for high accelerations, particularly if they involve variable loads.
	www.cs.uiowa.edu /~jones/step (729 words)

	Cleveland State University \|\| Embedded Control Systems Research Lab
		The speed at which the motor is running is measured by using an optical encoder attached on the shaft of the generator and the reference speed is set by the user by using a potentiometer.
		The controller and the estimator are implemented in a Microchip PIC16F877 microcontroller using embedded technology, and speed control is achieved using the estimated motor state.
		Variable-off-time control maintains a constant, controlled average current by using a priori knowledge of what the PWM off-time should be for stable current waveforms.
	academic.csuohio.edu /embedded/motor_control.html (798 words)

	motor control and learning
		Other studies have shown that motor memories change over time by consolidating memories of learned movements, each of which initially exists in a vulnerable state.
		Surprisingly, neural circuitry for memories in the cortical frontal motor areas differs markedly from neural memory circuits responsible for facts and events.
		The McGovern Institute is sponsoring research to explore these areas in detail, combining animal studies involving brain imaging of behavior, computer modeling of neural architecture, and focused stimulation of neurons in selected regions of the central nervous system.
	web.mit.edu /mcgovern/html/Areas_of_Research/motor_control.shtml (281 words)

	Motion Control
		A common control mechanism, for small robots, is to control the velocity of a motor.
		Commonly one reads that the RPM of a motor is proportional to the voltage across it’s terminals – and for most purposes that is true: at any given voltage, the motor will spin up in speed until the generator portion of the motor model matches the supply voltage.
		In all cases either the motor is consuming electricity and trying to turn a load, or the motor is generating electricity and trying to "hold back" the load.
	www.barello.net /Papers/Motion_Control/index.htm (4910 words)

	Jones on Stepping Motor Control Circuits
		When the switch controlling a motor winding is closed, allowing current to flow, the result of this is a slow rise in current.
		When the switch controlling a motor winding is opened, the result of this is a voltage spike that can seriously damage the switch unless care is taken to deal with it appropriately.
		The control unit is commonly a computer or programmable interface controller, with software directly generating the outputs needed to control the switches.
	www.cs.uiowa.edu /~jones/step/circuits.html (3222 words)

	Motor Control products for intelligent brushless motor control at PMD
		Motor Control IC PMD's Motor Control IC is an extremely compact single axis drive controller for demanding applications using a brushless DC motor.
		The MC73110 Motor Control IC provides high performance digital current loop, velocity loop and commutation for brushless DC motors.
		This intelligent single-axis drive controller operates in internal velocity profile mode, velocity mode with an external velocity command signal, or torque mode with an external torque signal.
	www.pmdcorp.com /motor-control (79 words)

	Applied Motor Control <> Principles of Compensation <> (Site not responding. Last check: 2007-11-06)
		The factors involved in motor dysfunction are complex and vary widely: types to traumas; intensity of those traumas; longevity of symptoms; motivation of the client, etc.
		The only "protocol" is that which exists in each client's motor control center, and it is based upon the individual process in which they developed motor dysfunction.
		Once the motor center begins using it for one compensation pattern, it is more likely to go to it in future situations requiring compensation.
	www.appliedmotorcontrol.com /4.htm (1293 words)

	Custom Control, Motor Speed Control, DC Motor Speed Control, AC Motor Speed Control, Cooling Solution
		The SmartFan motor speed control and alarm product line has been designed to satisfy the broadest possible range of applications, including both DC motor speed control and AC motor speed control.
		Control Resources has produced custom control and alarm products and special versions of our standard products for many OEM control applications.
		Control Resources' staff and facilities are fully equipped to provide complete fan, pump and motor control solutions from product definition to prototype design and verification to volume production.
	www.controlres.com /special_custom.htm (249 words)

	Motor Speed Control Cards
		Instech’s motor control circuit cards regulate the speed of small DC permanent-magnet brush motors, such as those used in our miniature peristaltic and shuttle pumps.
		With a speed controller, you set the motor speed with a control voltage, and it holds that speed constant over a wide range of torque.
		Active braking - Setting the control voltage to zero will cause the controller to drive the motor in the opposite direction, bringing it to a stop much faster than if the power were simply turned off.
	www.instechlabs.com /OEM/controlcards/index.php (270 words)

	c3controls: Motor control line has integrated flexibility
		IEC motor control line includes contactors, bimetallic overload relays, and motor protection circuit breakers with common connections and accessories.
		Motor protection circuit breakers and contactors can be assembled as a single unit for DIN rail or panel installations.
		Accessories and size of the motor control devices allow for installation in smaller enclosures.
	www.controldesign.com /vendors/products/2006/023.html (128 words)

	Motor Control, Electric Motor Control, Contactor, Motor Controller, Industrial Motor Control (Site not responding. Last check: 2007-11-06)
		As control systems become more compact and the need for more cost-competitive industrial motor control options arise, an IEC motor controller is the answer.
		AutomationDirect has partnered with Fuji Electric to carry Fuji’s DUO series line of motor contactors, overload relays, and manual motor starters (MMS), as well as their Odyssey line of large contactors and overloads featuring Super Magnet™ coil technology.
		The conventional starters in the DUO line can accommodate motors up to 100 horsepower at 480 VAC, while MMS combination starters can accommodate motors up to 40 horsepower at 480 VAC and are UL Type E listed.
	web1.automationdirect.com /adc/Overview/Catalog/Motor_Controls (598 words)

	SGPS: ShowRig Products - Chain Motors and Controls
		All of our motors are carefully inspected and maintained by factory-trained technicians.
		Due to the unique light weight and compact design these PDs can be mounted on the truss to shorten motor control cable runs or easily hauled up to the perms.
		To avoid frustrating phase problems, all of our PDs have phase reversal switches to insure proper motor control direction.
	www.sgps.net /chain_motor_n_control.html (542 words)

	Brushless Motor Control
		The ST7MC family and its enhanced motor control cell offers significant advantages compared to other microprocessor-based approaches such as DSPs.
		Designed specifically to control three-phase brushless motors and compressors, the ST7MC family of 8-bit microcontrollers includes a dedicated motor control macrocell that ensures optimum control of brushless DC and induction motors, as well as other motor and compressor types.
		The ST7MC family also maintains full motor performance and system efficiency over the widest range of available motor/compressor and control topologies.
	www.nuhorizons.com /products/NewProducts/poq19/stmicro.html (385 words)

	EMSCO, Motor Control Shop. Starter, Motor control, Industrial Motor control
		Motor starters from NEMA 00 to NEMA 4 in both Combination and Non-Combination, (indoor and rain tight) IN STOCK.
		We carry a full line of accessories, controls, pilot devices, transformers, relays, fuses, timers and phase protection.
		An inventory of old style (New old stock) starters and heaters is maintained for replacement of older unit components, including Westinghouse, is maintained.
	www.emsco.net (379 words)

	Galil Motion Control: Training: Web Conference
		Jacob has conducted countless seminars and has authored over 100 textbooks, articles and papers on the subject of motion control.
		He has recorded several motion control tutorials that you can watch 24/7 from the convenience of your PC.
		"Controller Upgrade Options" Various upgrades are presented including absolute and SSI encoder interfaces, backlash and leadscrew compensation, antifriction bias, two sets of PID and more.
	www.galilmc.com /training/webconf.html (467 words)

	Digital Motor Control System Block Diagram (SBD) and Design resources
		Motor control is used to precisely control the position, velocity, and torque of a mechanical drive.
		- executes high-sophisticated position and speed estimation algorithms to control the motor using data from resolver, encoder, and halleffect sensor.
		- uses a resolver, encoder, and halleffect sensor to sense motor position/speed which will be used by the DSP to calculate the drive power going to motor.
	focus.ti.com /docs/solution/folders/print/195.html (959 words)

	Atmel AVR 8-Bit RISC Motor Control Solutions
		Ranging from 8- to 100-pin devices, AVR Flash microcontrollers are well suited for applications such as PC fans up to highly advanced motor control applications.
		Atmel is providing support to developers using AVR for motor control designs, with a number of applications notes with implementation examples, and a set of development tools.
		ATAVRMC200: is an evaluation kit dedicated to asynchronous AC motor control, using various sensors for regulation.
	www.atmel.com /products/avr/mc (535 words)

	Motor, Drive, Servo, Control, Inverter Home Page
		A source of information about motors, drives, automation, and motion control.
		The 2007-2012 World Outlook for Manufacturing Relays, Motor Starters and Controllers, and Other Industrial Controls and Control Accessories
		The World Market for Electric Motors with Output Exceeding 37.5 w and AC Generators: A 2007 Global Trade Perspective
	www.motorcontrol.com (100 words)

	Houston Motor & Control - Home - www.motor-hmc.com
		Houston Motor and Control, Inc. supplies premium motors, drives, controls, and more.
		We can supply you the right motor, at the right price and at the right time.
		In addition to Electric Motors we suppy Adjustable Speed Drives, Variable Frequency Drives, Controls, Voltage Controls, Medium Voltage Controls, Programmable Logic Controllers, PLC's,Motor Controls, Motor Control Centers, Inverters, Switchgear, Phase Converters, Solid State Starters, Softstarters, Reduced Voltage Starters, Uninterruptible Power Supplies, and UPS's.
	www.motor-hmc.com (180 words)

	Troubleshooting Electric Motor Control Circuits - wiring fault simulation (Site not responding. Last check: 2007-11-06)
		Here, you will troubleshoot a motor control circuit consisting of a reversing motor controlled garage door.
		Elementary wiring and connection wiring diagrams will be needed to use to troubleshoot 24 faults of varying difficulty.
		Schematics and wiring diagrams for the circuits can be viewed on screen or printed out to help you understand the circuit and eventually track down problem areas to solve faults.
	www.bin95.com /ebooks/electrical_motor_control.htm (1051 words)

	Motion Control Products Software, Motion Control Engineering, DC Motor Stepper Motor Motion Controllers Servo Motor ...
		The miniature stepper motor has an external motor-diameter of only 12 mm and a length of 17.2 mm.
		MicroMo Electronics, Inc. announces the expansion of its Brushless DC motor product line with the addition of its Series 2057...B. With an external motor-diameter of only 20 mm and a length of 57 mm, the power to volume ratio is truly impressive.
		Complete Information on Maxon's Line of DC Motors, Brushless Motors, Control Electronics and Drive Components.
	www.motioncontrol.com (502 words)

	About MC
		Motor Control (MC) provides a multidisciplinary examination of human movement across the lifespan.
		To keep you abreast of current developments in the field of motor control, it offers timely coverage of important topics, including issues related to motor disorders.
		This international journal publishes many types of research papers, from clinical experimental to modeling and theoretical studies.
	www.humankinetics.com /products/journals/journal.cfm?id=MC (175 words)

	Motor Control
		Click here for a comparison of all BASIC Stamp modules.
		Parallax provides numerous motor controllers for your newest application.
		Coupled with a BASIC Stamp® microcontroller, these motor controllers provide you with a low cost and efficient set up.
	www.parallax.com /html_pages/products/motorcontrol/motor_control.asp (61 words)

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