ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Micro Stepper MotorOutlineReference listTo explore further (survival pointers of web references etc)Major applicationsBasic Working PrincipleTypical ConfigurationSlide 8Slide 9Slide 10Application ExampleSlide 12Slide 13Slide 14Major SpecificationsLimitationsHow To ChooseCost InformationWhere to BuyReference ListThe EndECE5320 MechatronicsAssignment#01: Literature Survey on Sensors and Actuators Assignment#01: Literature Survey on Sensors and Actuators Micro Stepper MotorPrepared by:James KelseyDept. of Electrical and Computer Engineering Utah State University3/9/200701/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-2Outline –Reference list–To probe further–Major applications–Basic working principle illustrated–A typical sample configuration in application (application notes)–Major specifications–Limitations–And many more relevant issues in applications (such as, how to choose, cost information, where to buy etc.)01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-3Reference list•AMCI–http://www.amci.com/tutorials/tutorials-what-is-stepper-motor.asp•Wikipedia–http://en.wikipedia.org/wiki/Stepper_motor•Parker Motion–http://www.parkermotion.com/01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-4To explore further (survival pointers of web references etc) •http://www.ams2000.com/pdf/step101.pdf•http://www.cs.uiowa.edu/~jones/step/•http://en.wikipedia.org/wiki/Stepper_motor01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-5Major applications •Industrial Control•Plotter•Scanner01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-6Basic Working Principle •Motor Spins01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-7Typical Configuration •Logic Controller (Computer, Embedded System, PLC)•Drive•Motor01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-8Typical Configuration •Logic Controller–Makes decisions for control–Interprets inputs and commands–Creates desired command parameters–PLC–Embedded Controller–Computer01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-9Typical Configuration •Drive–Receives controller commands–Creates pulses for the drive–Monitors Faults01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-10Typical Configuration •Motor01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-11Application Example Conveyor for X-Ray InspectionThe parts are placed in a tray as shown which is then indexed along a conveyor where they will be inspected two at a time. They enter the x-ray chamber and must be placed precisely under the camera for machine inspection. Since the parts are small, less than ¼” diameter the camera is focused on a very small area. Therefore the conveyor must move to an exact position for proper inspection.Micro Stepper Drive PLCMotorConveyorInspection Camera01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-12Application Example •Conveyor for X-Ray Inspection–The images are extremely magnified and the slightest variation in position can leave a part outside of the cameras viewing area.–The microstepper drive provides the resolution to control the precise position of the conveyor. –A stepper drive and motor with 25000 steps per revolution allows position adjustments of conveyor stops to be less than 1/32”. GOOD POSITIONPOOR POSITIONPart is partially out of view01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-13Application Example Charge Holder Laser WeldThe charge holder is required to be welded to the header for an initiator assembly. A YAG laser welder is used and the part is rotated while the laser pulses to create a complete 370 degree weld. The part is lifted from its ‘nest’ and rotated by a stepper motor. The lift pin that raises the part has a clover leaf shape which must fit through a similar hole on the nest. There is a tolerance of +/- 1 degree from center alignment for the lift pin to fit through the nest. So precise rotation of the part is required to ensure constant rotational velocity for an even, complete weld and a return to the exact center aligned position.01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-14Application Example •Charge Holder Laser WeldGOOD POSITIONPOOR POSITIONPart is partially out of view01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-15Major Specifications •Steps per revolution•Torque01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-16Limitations •Without closed loop control can miss steps01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-17How To Choose01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-18Cost Information01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-19Where to Buy01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-20Reference List01/15/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-21The
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