Hydraulics - MKM-503E MECHATRONIC SYSTEM COMPONENTS Fall...

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1 İ stanbul Technical University MKM-503E MECHATRONIC SYSTEM COMPONENTS Fall 2006-2007 Week 10 Hydraulics Dr. Erdin Dr. Erdin ç Altu Altu ğ
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2 İ stanbul Technical University This week Hydraulic Systems and Control ± What is hydraulics? ± Why do we use hydraulics? ± Where ? ± Elements ± Theory ± Building Circuits ± Examples ± Program
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3 İ stanbul Technical University
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4 İ stanbul Technical University PRINCIPLE MEDIA Mechanical structure under load Mechanics Gas under pressure Pneumatics Fluid under pressure Hydraulics Electrons at potential Electricity POWER TRANSMISSION MEDIA
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5 İ stanbul Technical University FACTORS TO BE CONSIDERED WHEN CHOOSING THE TYPE OF MEDIA What is the starting torque? How much space is available? Are the conditions constant or variable? What is the typical duty cycle? What power level is required? What rotary speed is available? Is the environment is potentially hazardous? How safe is the system to be? What finesse of control is required? What total efficiency is expected? Is the environment unfriendly? What is the transmission to cover? What total reliability is required? Are the failure conditions to be monitored?
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6 İ stanbul Technical University
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7 İ stanbul Technical University Why do we use hydraulics? Advantages: z Compact for high powers z Easy to control z Modular z Reliable (shock resistant) z No damage in stalling, able to provide braking / controlled deceleration z Actuator positioning is precise Disadvantages: z Complex, sometimes difficult pipe and hose fittings z Component life reduced with contaminants z Leaks can be dangerous (Danger due to high pressure) z Viscosity changes with temperature
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8 İ stanbul Technical University Where do we use Hydraulic Systems? In many applications, such as; z Construction Machines z Agriculture Machines z Etc. Industrial Applications; z Manufacturing and assembly machines z Transportation Systems z Presses z Injection Molding z Etc.
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9 İ stanbul Technical University Hydraulics Application Fields
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10 İ stanbul Technical University Flow Rate Displacement . time Al Q t == A: Piston area, l: piston extension length A Pascal’s Law: Pascal’s law, developed by French mathematician Blaise Pascal, states that pressure applied to a confined fluid at any point is transmitted undiminished throughout the fluid
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This note was uploaded on 09/21/2011 for the course EE ee taught by Professor Ee during the Spring '10 term at Istanbul Technical University.

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Hydraulics - MKM-503E MECHATRONIC SYSTEM COMPONENTS Fall...

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