TW 503 – Design of Electrohydraulic Motion Control Systems

Duration : 20 Hours

Content :

  1. Hydraulic and electro-hydraulic control system concepts, historical review.
  2. Fundamental physical principles of hydraulic power: Pascal’s law, conservation of mass and energy (Bernoulli’s equation), analogy between hydraulic and electrical systems, fluid compressibility and bulk modulus, orifice equation.
  3. Electro-hydraulic control system components: pumps, motors, cylinders.
  4. Electro-hydraulic control system components: valves (on/off, proportional, servo), relief, pressure reducing, pressure compensators
  5. Hydraulic reservoir, accumulator, filters, coolers.
  6. Component sizing in hydraulic system design: pump, valve, cylinder/motor, tank, accumulator, filter, hose sizing.
  7. Open center and closed center hydraulic circuits
  8. Load sensing hydraulic circuits
  9. Pressure compensation (pre and post) in load sensing hydraulic circuits
  10. Modeling and analysis of hydraulic circuits, closed loop control.
  11. Case Study:  Hydraulic circuit diagram of wheel loaders by Caterpillar, Volvo, John Deere, Komatsu
  12.  Case Study:  Hydraulic circuit diagram of excavators by Caterpillar, Volvo, John Deere, Komatsu
  13. Design and analysis using Matlab/Simulink/Stateflow.