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ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Pneumatic ActuatorOutlineReference listTo explore furtherIntroductionMajor applicationsSlide 7Simplified Diagram of Pneumatic ActuatorA Basic Pneumatic SystemMost Common Types of Pneumatic ActuatorsTypes of CylindersSlide 12Single Acting (Air to Spring)A typical sample configuration in applicationControl System with MR Brake and Pneumatic ActuatorMajor SpecificationsSlide 17AdvantagesSlide 19DisadvantagesOther Relevant IssuesECE5320 MechatronicsAssignment#01: Literature Survey on Sensors and Actuators Assignment#01: Literature Survey on Sensors and Actuators Topic: Pneumatic ActuatorPrepared by:Andres ContrerasDept. of Electrical and Computer Engineering Utah State UniversityE: [email protected] T: (435)512-2156 F: (435)797-3054W: http://www.engineering.usu.edu/eceMarch 06, 200901/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-2Outline –Reference list–To probe further–Introduction–Major applications–Basic working principle illustrated–A typical sample configuration in application.–Major specifications–Limitations–Other relevant issues in applications01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-3Reference list•http://www.nfpa.com/OurIndustry/OurInd_AboutFP_WhatIsPneumatics.asp•http://www.engineersedge.com/hydraulic/pneumatic_actuator.htm•http://www.teamdavinci.com/understanding_pneumatics.htm•http://www.wikipedia.com •Robert H. Bishop, THE MECHATRONICS HANDBOOK, CRC Press, 2002.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-4To explore further •A good place to further explore is the website www.teamdavinci.com.•Another good places are the manufacturer websites such as:–http://www.fpweb.com/.–www.parker.com.–www.DanaherMotion.com/Actuators •Finally, the Mechatronics Handbook and Google are other good sources.Introduction From the National Fluid Power association we get the following deffinition for pneumatics: “ In a nutshell, pneumatics is a means whereby signals and energy are transmitted, controlled and distributed using pressurized air as the medium. Pneumatics can be effectively combined with other technologies through the use of sensors, transducers and microprocessors” 01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-501/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-6Major applications Pneumatics actuators have a broad range of applications such as:–Mechatronics.–Food Production Lines.–Medical Equipments.–Chemical Industries.–Vehicles.–Aerospace.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-7Major applications –Operation of Bus Doors.–Operation of Machine Tools.–Operation of Work Holding Devices.–Air Tools.Simplified Diagram of Pneumatic Actuator01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-8http://www.engineersedge.com/hydraulic/pneumatic_actuator.htmA Basic Pneumatic System•Intake Air Filter.•Compressor.•After Cooler.•Air Separator.•Pressure Switch.•Safety Valve.•Air Receiver.•Air Service Unit.•Directional Valves•Actuators01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-9Most Common Types of Pneumatic Actuators•Cylinders: Transform the energy of compress air in a lineal movement. The are the most common elements in pneumatic. •Pneumatic Motors: Transform the energy of compressed air in circular movement.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-10Types of Cylinders•Single Acting (Air to Spring) and Double Acting (Air to Air).–Diaphragm Actuator: Used mainly on linear motion valves but also suitable for rotary motion valves when used with some kind of linear to rotary motion linkage.–Piston Cylinder Actuator: Used on both linear and rotary motion valves. Must be coupled with some kind of linear to rotary motion linkage when used with rotary motion valves.–Scotch Yoke Actuator: Used to transfer linear motion to rotary motion.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-11Types of Cylinders•Single Acting (Air to Spring) and Double Acting (Air to Air).–Rack and Pinion Actuator: Used to transfer the linear motion of piston cylinder actuators to rotary motion. Rack and pinion is ideal for automating manually operated valves.–Vane Actuator: Used with rotary motion valves.–Lever and Link Actuator: A splinted or slotted lever attached to the valve shaft to transfer the linear motion of diaphragm or piston cylinder actuators to rotary motion.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-12Single Acting (Air to Spring)•They have a single connection of compressed air.•They can only realize work in one direction.•The piston rod returns by means of an external force, usually a spring. 01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-13A typical sample configuration in application01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-14http://www.teamdavinci.com/understanding_pneumatics.htmControl System with MR Brake and Pneumatic Actuator01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-15http://pcc.imir.agh.edu.pl/poz20/fig5.gifMajor Specifications•Cylinder Force: It is important to know the real force of the piston. To do so, it is necessary to take into account the friction force which can be between a 3% to 10% of the calculated force.•Air consumption. It is important to calculate the air consumption in order to estimate the energy utilization.•Velocity. It is very important to know the speed of displacement.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-16Major Specifications•Dimensions. The diameter of the cylinder and the length of the piston rod are very important dimensions.•Joint. There are different types of joints and they are the one that prevent the air form escaping out of the cylinder. 01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-17Advantages•Faster Response.•Clean Operation.•Can be used in water.•Robust System that are virtually maintenance free.•Is a Low Power System.01/14/19ECE5320


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USU ECE 5320 - Pneumatic Actuator

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