ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: HYDRAULIC BRAKE SYSTEMREFERENCE LISTREFERENCE LISTEXPLORE FURTHERSlide 5MAJOR APPLICATIONSApplicationsIntroductionLaws Governing Unconfined LiquidsPrinciple behind HydraulicsPascal’s Law In HydraulicsHydraulic BrakesComponents of a Hydraulic Brake SystemWhat are these elements ?WorkingWorkingBrake PedalWorking of Master CylinderTwo Circuit Master CylinderThe Braking MechanismDisc Brake SystemDrum Brake SystemABS Brake SystemsABS Brake ComponentsABS at workBrake FluidDisadvantages of Hydraulic Brakes SystemsSlide 28Straight Bore Master CylinderFluid ReservoirSlave CylinderWheel CylinderDisc BrakeManufacturer & where to BuyConclusionECE5320 MechatronicsAssignment#01: Literature Survey on Sensors and Assignment#01: Literature Survey on Sensors and Actuators Actuators Topic: HYDRAULIC BRAKE SYSTEMPrepared by:Tripti BhaskaranDept. of Electrical and Computer Engineering Utah State University3/11/200501/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-2REFERENCE LIST •http://www.tpub.com/fluid/ch1f.htm•http://www.brakecouncil.org/•http://www.atiactuators.com/products.htm•http://maritime.org/fleetsub/hydr/chap1.htm•http://science.howstuffworks.com/hydraulic1.htm•http://fluid-power.globalspec.com01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-3REFERENCE LIST•http://www.mico.com/literature/resource.php3•http://www.machinetooldistributor.com/press-brakes.htm•http://www.easternmarine.com•http://www.innerauto.com/innerauto/anim/brake.html•http://www.e-z.net/~ts/hybrakes.htm•http://www.20v.org/brakprob.htm01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-4EXPLORE FURTHER•The world of brakes in animation. A very interesting website showing the working of brakes. Click on the link below http://www.innerauto.com/main.html•Electro-Hydraulic brake system by Continental Automotive system. A computer monitors each braking maneuver and calculates the optimum hydraulic pressure for each wheel.•ABS – anti locking brake systems. The most popular form of Hydraulic brakes.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-5EXPLORE FURTHER•Hydraulic Press Brakes used in heavy sheet metal work and Machine tool industry. Click on link below to see productshttp://www.multipress.com•The different types of Disc and Drum brake systems.•The use of Hydraulics in submarine engineering. Click on link below http://www.maritime.org/fleetsub01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-6MAJOR APPLICATIONS •Construction Site Machinery: bulldozers, backholes, shovels, loaders, fork lifts and cranes.•Hydraulic brakes systems by different manufacturers are used in all types of cars in the market.•The ABS braking system is the most useful and safe kind of braking system.•Submarines, bikes, lifts, elevator use some form of Hydraulic Brakes.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-7Applications01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-8Introduction What is the meaning of hydraulics ? Tool or equipment powered by the movement of fluid under pressure. Hydraulics is defined in engineering textbooks as the engineering application of fluid mechanics. Hydraulics includes the study of the behavior of enclosed liquids under pressure, and the harnessing of the forces existing in fluids to do some practical task such as steering a submarine or applying brakes.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-9Laws Governing Unconfined Liquids01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-10Principle behind Hydraulics PASCAL’S LAWPressure exerted at any point on a confined liquid is transmitted undiminished in all directions.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-11Pascal’s Law In HydraulicsMultiplication of force01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-12Hydraulic Brakes Multiple Piston SystemAllows force to be transmitted undiminished to more than one piston. Multiplication of forces takes place.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-13 Components of a Hydraulic Brake System01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-14What are these elements ?1. Brake Pedal2. Master Cylinder Piston3. Master Cylinder4. Brake lines5. Brake Cylinders (4 in number for each wheel)6. Brake Pistons, two at each opposed to each other and pressing the brake shoes into the brake bands.7. Brake bands press into the wheels causing friction and hence a slow down.8. The friction action.9. The springs which brings back the break shoes.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-15Working •When the brake pedal is depressed, the pressure on the brake pedal moves the piston within the master cylinder, forcing the brake fluid from the master cylinder through the brake lines to the wheel cylinders. •The wheel cylinders contain two opposed output pistons, each of which is attached to a brake shoe fitted inside the brake drum. •Each output piston pushes the attached brake shoe against the wall of the brake drum, thus retarding the rotation of the wheel. •When pressure on the pedal is released, the springs on the brake shoes return the wheel cylinder pistons to their released positions.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-16Working•This action forces the displaced brake fluid back through the flexible hose and tubing to the master cylinder.•The force applied to the brake pedal produces a proportional force on each of the output pistons, which in turn apply the brake shoes frictionally to the turning wheels to retard rotation01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-17Brake PedalWorks on the principle of Leverage. The pedal is designed in such a way that it can multiply the force from your leg several times before any force is even transmitted to the brake fluid. Changing the pivot point we can get the desired multiplication of force and movement.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-18Working of Master Cylinder •To increase
View Full Document
Unlocking...