Hydraulic Servo System

Hydraulic Servo System .

Hydraulic Servo System

Technical Description of Hydraulic Servo System

Servo systems are closed-loop control systems. In many industrial applications it is often required to convert small mechanical motions into a different motions with increased force. Hydraulic systems are particularly suitable for applications where large actuation forces are required. The unit allows the operation of a hydraulic servo system to be investigated in detail. A carriage with a mass of 50kg is moved by a hydraulic cylinder. Additional springs and an adjustable hydraulic damper permit static and dynamic loads to be simulated. The displacement of the carriage is established using a potentiometric position sensor and compared against the reference variable. The control deviation is processed in a separate servo amplifier. Depending on the direction of the deviation, a control valve is activated in forward or reverse direction, which in turn produces a corresponding movement of the hydraulic cylinder and the carriage. The trainer is a mobile unit. Measuring devices can be housed in the built-under cabinet unit.

Specification of Hydraulic Servo System

• Self-contained training system of a complete hydraulic position control loop with adjustable loading conditions
• Oil circuit with hydraulic unit, hydraulic accumulator, 2 manometers, control valve and hydraulic cylinder to move a weighted carriage
• Operation of the electromagnetic control valve for position control by proportional amplifier
• Proportional amplifier with adjustable gain and recorder
• All control variables available as voltage signals 0...10V

Technical Data of Hydraulic Servo System

Hydraulic unit

• Power output: 1,1kW
• Flow rate: 3,8L/min
• Head: 1500m
• Tank capacity: 10L
• Hydraulic accumulator capacity: 2L
• Accumulator charging valve: max. 40L/min

Hydraulic cylinder

• Piston diameter: d=40mm
• Stroke: 150mm
• Mass moved: 50kg

Control valve NG6

• Nominal flow rate: 24L/min
• Activation: +/-10V

Potentiometric position sensor

• Measuring range: 150mm
• Output: 0 …10V

Dimensions and Weight of Hydraulic Servo System

• LxWxH: 1600x700x1700mm
• Weight: approx. 414kg