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ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Spraying ActuatorsOutlineReference listTo explore further (survival pointers of web references etc)Major applicationsMajor applicationsBasic Working PrincipleSlide 8Sample ConfigurationsSlide 10Major SpecificationsSlide 12LimitationsSlide 14How to ChooseSlide 16Slide 17Where to BuyAlternativesSlide 20ECE5320 MechatronicsAssignment#01: Literature Survey on Sensors and Actuators Assignment#01: Literature Survey on Sensors and Actuators Topic: Spraying ActuatorsPrepared by:Josh AdamsDept. of Electrical and Computer Engineering Utah State UniversityE: [email protected] ; T: (801)652-9009; F: (435)797-3054 (ECE Dept.)3/7/200801/14/19ECE5320 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.)01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-3Reference list•http://www.ijfisnar.com/valves_sv1217.cfm•http://www.spray.com/products/tips.asp•http://www.globalspec.com/FeaturedProducts/Detail/EFD/Consistent_Spray_Valve_Systems/26972/0?fromSpotlight=101/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-4To explore further (survival pointers of web references etc) •Industrial Spray Nozzles (http://www.idswater.com/water/us/technical_products_services/industrial-spray-nozzles/13289_0/s_supplier_2.html)•Global Spec, miniature spray valves (http://process-equipment.globalspec.com/Industrial-Directory/miniature_spray_valve)01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-5Major applications •Paint distribution over an even area•Misted/atomized fluid distribution, for instance to provide a humid environment for people with breathing problems.•Chemical agent counteraction, as in an airborne poison or biological elements (countering a terrorist attack).Major applications•Pesticide dispensing in order to remove people from a potentially dangerous/hazardous environment.•Spraying/replacing sealant in small or difficult to reach pipes.•Depending on the valve type, automated fire extinguishment.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-6Basic Working Principle•Pressurized air is put into the input hole of the valve, releasing the fluid to be dispensed as well as the atomizing air which causes the fluid to be sprayed.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-7Basic Working Principle•The atomized fluid can then be spread over an even area.•Depending on the exact fluid to be dispensed, atomization can make it airborne for a long period of time.•Depending on the type of spray valve, some create atomization without a separate air-input. They use high pressure behind a very small output aperture in order to produce the atomization.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-8Sample Configurations•For a pneumatically powered spray valve, there are 3 inputs required– driving air, fluid to spray, and atomizing air.•(See cross-sectional view on slide 7 for more details)01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-9Sample Configurations•A high-pressure spray valve only requires two inputs, but it must be at higher pressure than with the pneumatically driven valve.•It allows much higher pressure to be used for the application.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-10Major Specifications•The specifications for the pneumatic valve, developed by I&J Fisnar are listed.–Weight: 5.3 oz–Operating air pressure: 70-100 psi–Atomizing air pressure: 1-30 psi–Fluid viscosity: up to 1000 cps–Fluid pressure: 1-100 psi (depends on material viscosity)–Nozzle diameter: 1.17 mm–Flow rate: up to 28 cc/sec–Operating frequency: 400 cycles/sec–Spray angle: 14 degrees–Spray pattern: circular (conical)–Operating/atomizing air inlets: 10-32 thread, withpush-in fitting for ¼ tube.–Material inlet: 1/8 NPT with compression fitting for ¼ tube01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-11Major Specifications•The specifications for the High Pressure Robotic tips made by Spraying Systems Co.–Diameter: .59”–Height: .375”–Tungsten Carbide orifice insert–Stainless steel tip holder–Various spray angles from 0° to 110° at 40 psi.–Rated for .24 - .67 gallons per minute at 500-4000 psi–Spray pattern from 22” and below.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-12Limitations•The selection of spray actuators is very limited. Many are geared toward large industrial robot applications, such as spray painting products.•The pneumatic spray actuator featured in this presentation is limited by requiring an air compression system to accompany the actuator. This is fine if the actuator is to be stationary or limited to a small range of motion, but if it is to be mounted on a mobile robot, then it places significant requirements on the robot’s chassis.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-13Limitations•High-end spraying actuators are expensive. If the cost of the required pneumatic powering system is added, it dramatically increases the cost of any such system on a particular robot.•Mechanical spraying applications, such as an actuator which compresses a traditionally hand-operated valve’s lever might be considered as a cheaper and more mobile option.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-14How to Choose•The platform the actuator is to be used on should be considered most highly. Most current spray valves and nozzles are designed to be used on large, relatively stationary systems. •If the application is to be a small mobile robot, then a pneumatic spraying valve, such as that featured in this presentation may not fit the needs.•Despite the pneumatic requirements of many spray systems, the actuator can be relatively small and could have multiple instances on a single vehicle.01/14/19ECE5320 Mechatronics.


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USU ECE 5320 - Spraying Actuators

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