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Prepared by: Brett Anderson Dept. of Electrical and Computer Engineering Utah State University

ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: DC Linear Actuators. Prepared by: Brett Anderson Dept. of Electrical and Computer Engineering Utah State University E: ; T: ( 435)797-; F: (435)797-3054 (ECE Dept.) W: http://. 3/11/2005. Outline .

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Prepared by: Brett Anderson Dept. of Electrical and Computer Engineering Utah State University

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  1. ECE5320 MechatronicsAssignment#01: Literature Survey on Sensors and Actuators Topic: DC Linear Actuators Prepared by: Brett Anderson Dept. of Electrical and Computer Engineering Utah State University E: ; T: (435)797-; F: (435)797-3054 (ECE Dept.) W: http:// 3/11/2005

  2. Outline • 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.) ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  3. Reference list • http://www.imshome.com/Product%20Datasheets/ios_motors.pdf • http://www.barringtonautomation.com/motionunits.htm • http://www.orientalmotor.com/products/limo/index.htm ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  4. To explore further (survival pointers of web references etc) • There are many variations of this actuator, so it helps to narrow your specifications before attempting to find one to fit your application • Explore AC and DC versions, as well as different types of feedback options • Explore different ways to control them ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  5. Major applications • Robotics • Industrial Automation • Positioning • Automotives • Low to Medium Force Applications ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  6. Basic Working Principle • Includes a DC Electric Motor which drives shaft • Several types of motors are used in industry • Motor Drives a threaded shaft through an in line ball nut • Some type of feedback (typically from a resistive strip) is output to update the shaft position to the motor • The controller uses the feedback to drive the shaft to the desired position ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  7. View of a Typical DC Linear Actuator http://www.imshome.com/Product%20Datasheets/ios_motors.pdf

  8. Inside View of Shaft Operation http://www.imshome.com/Product%20Datasheets/ios_motors.pdf

  9. A sample application in robotics http://www.barringtonautomation.com/motionunits.htm

  10. Industrial Positioning http://www.orientalmotor.com/applications/limo_position.htm

  11. Wafer Handling http://www.orientalmotor.com/applications/limo_position.htm

  12. Pressing Applications http://www.orientalmotor.com/applications

  13. Pushing Applications http://www.orientalmotor.com/applications

  14. Major Specifications • Motor Voltage supply • Position Command and Feedback Range (Typically 2-20mA in industrial applications) • Stroke length • Output Force • Position Feedback Accuracy • Operating Temperature • Speed ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  15. Major Specifications (Cont) • Max Current Draw (Motor) • Max RPM of Drive Shaft • Typical Repeatability (precision) • Transverse Force • No Load Torque ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  16. Limitations • Relatively Slow Moving • Not as powerful as hydraulic actuators • Bulky and Heavy • Operating Temperatures typically are below 110F ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  17. How to choose the right one • Make sure that the stroke length and force rating are what is desired, there are many variations in this area • Make sure that your controller will interface easily, many are designed with the industry standard 4-20mA system, but there are a lot of variations which may be more suitable for specific needs • Find the right mounting: They come with many assorted mounting systems ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  18. Cost Information • A typical 8 inch stroke linear actuator goes for about 100-150 dollars • High force requirements drive the cost up quickly • High accuracy and precision also result in high cost ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  19. Good Retailers • Firgelli Automation: http://www.dclinearactuators.com/ • Transmotec: http://www.transmotec.com/ • Oriental Motor: http://www.orientalmotor.com/products/limo/index.htm ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  20. Conclusion • DC Linear actuators are great for automation • Typically they are robust, and made to interface easily with PLC’s and other commonly used controllers • Stroke, Force, Accuracy and Precision are important parameters in purchasing • They are need real fast, but supply a fair amount of torque for their size ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

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