Lectures
1. The definition of term control. Hydraulic mechanisms control: controlled variables, methods of control - classification. Variable resistance control (one-edge), which depends on the pressure drop on the motor. Sources of constant pressure.
2. Variable resistance control (one-edge), which is independent of the pressure drop on the motor. Two-way flow control valves. Viscosity-independent throttle valves. Three-way flow control valves.
3. Variable resistance control (two-edge). Four-edge control spool valve. Proportional directional control valves mechanically actuated.
4. Proportional directional control valves electrically actuated. The control electronics. Proportional directional control valves with two-way and three-way flow control valves, LS (load sensing) systems.
5. Design of hydraulic systems with proportional directional control valves.
6. Servo valves.
7. Servo drives. Application of servo drives in aviation, robotics, machine tools, thermal and nuclear power engineering.
8. Dynamics of servo drives. Methods of the description of control circuit components, mathematical-physical models of control circuit components.
9. Rotary servo drives: mathematical description of dynamic behavior, control methods, dynamic stability.
10. Positional servomechanisms with mechanical feedback. Electro-hydraulic positional servomechanisms. Mathematical description of dynamic behavior, control methods, dynamic stability.
11. Stabilization of positional servomechanisms.
12. Volumetric control.
13. Secondary control of hydraulic motors. Pressure, force, torque control.
14. Principles of assembly, operation, and maintenance of servomechanisms. Filtration and temperature stabilization.
Contents of exercises and seminars
1. Repetition of basic terms of fluid mechanisms.
2. Variable resistance control: hydraulic systems with throttle valves.
3. Variable resistance control: hydraulic systems with two-way and three-way flow control valves.
4. Program 1: Measurement of throttle valve characteristics. Measurement of two-way flow control valve characteristics.
5. Program 2: Measurement of the torque M dependence on the speed n of the drive with variable resistance control.
6. Program 3: Design of hydraulic circuit with proportional directional control valve. Example from the metallurgical industry.
7. Design of hydraulic circuit with proportional directional control valve - completion.
8. Design of hydrostatic transmission with volumetric control of the pump and the hydraulic motor.
9. Transient response, transfer functions, frequency response.
10. Mathematical-physical models of hydraulic components of control hydraulic system.
11. Program 4: Design of rotary servo drive. An example of the lifting equipment.
12. Measurement of rotary servo drive - to program No.4.
13. Design of positional servomechanism. An example from the field of nuclear energy engineering.
14. Demonstration of positional servomechanism in the laboratory. Credit.
1. The definition of term control. Hydraulic mechanisms control: controlled variables, methods of control - classification. Variable resistance control (one-edge), which depends on the pressure drop on the motor. Sources of constant pressure.
2. Variable resistance control (one-edge), which is independent of the pressure drop on the motor. Two-way flow control valves. Viscosity-independent throttle valves. Three-way flow control valves.
3. Variable resistance control (two-edge). Four-edge control spool valve. Proportional directional control valves mechanically actuated.
4. Proportional directional control valves electrically actuated. The control electronics. Proportional directional control valves with two-way and three-way flow control valves, LS (load sensing) systems.
5. Design of hydraulic systems with proportional directional control valves.
6. Servo valves.
7. Servo drives. Application of servo drives in aviation, robotics, machine tools, thermal and nuclear power engineering.
8. Dynamics of servo drives. Methods of the description of control circuit components, mathematical-physical models of control circuit components.
9. Rotary servo drives: mathematical description of dynamic behavior, control methods, dynamic stability.
10. Positional servomechanisms with mechanical feedback. Electro-hydraulic positional servomechanisms. Mathematical description of dynamic behavior, control methods, dynamic stability.
11. Stabilization of positional servomechanisms.
12. Volumetric control.
13. Secondary control of hydraulic motors. Pressure, force, torque control.
14. Principles of assembly, operation, and maintenance of servomechanisms. Filtration and temperature stabilization.
Contents of exercises and seminars
1. Repetition of basic terms of fluid mechanisms.
2. Variable resistance control: hydraulic systems with throttle valves.
3. Variable resistance control: hydraulic systems with two-way and three-way flow control valves.
4. Program 1: Measurement of throttle valve characteristics. Measurement of two-way flow control valve characteristics.
5. Program 2: Measurement of the torque M dependence on the speed n of the drive with variable resistance control.
6. Program 3: Design of hydraulic circuit with proportional directional control valve. Example from the metallurgical industry.
7. Design of hydraulic circuit with proportional directional control valve - completion.
8. Design of hydrostatic transmission with volumetric control of the pump and the hydraulic motor.
9. Transient response, transfer functions, frequency response.
10. Mathematical-physical models of hydraulic components of control hydraulic system.
11. Program 4: Design of rotary servo drive. An example of the lifting equipment.
12. Measurement of rotary servo drive - to program No.4.
13. Design of positional servomechanism. An example from the field of nuclear energy engineering.
14. Demonstration of positional servomechanism in the laboratory. Credit.