IHA-2576 Digital Hydraulics, 5 cr

Additional information

Basic knowledge about Matlab and Simulink is needed.

Person responsible

Matti Linjama


Implementation Period Person responsible Requirements
IHA-2576 2019-01 1 - 2 Matti Linjama
Miika Paloniitty
Jyrki Tammisto
Exam + practical work

Learning Outcomes

Understanding the fundamental principles of digital hydraulic systems and differences to traditional hydraulic systems. Ability to dimension digital valve system and to select the most suitable valve type and coding method. Basic control principles of digital valve systems. Operation principles of digital pump-motors and multi-chamber cylinders.


Content Core content Complementary knowledge Specialist knowledge
1. Static and dynamic characteristics of on/off valves.  Dynamic modelling of on/off valves.  Boosting of on/off valves. 
2. DFCU - Digital Flow Control Unit, static and dynamic characteristics.  Different coding methods.   
3. Digital valve systems. Characteristics, benefits and challenges.     
4. Model based control of DFCU and digital valve systems.  Sum flow control, simultaneous control of three or four control edges.  Steady-state model of valve-cylinder combination and its solution. 
5. Digital pumps and motors.  Controllability of digital pumps and motors.   
6. Miniaturization, PNM coded systems     
7. Pressure transients, good and bad state transitions.     
8. Multi-chamber cylinders.     

Instructions for students on how to achieve the learning outcomes

Please take part into lectures and exercises.

Assessment scale:

Numerical evaluation scale (0-5)

Partial passing:

Completion parts must belong to the same implementation

Study material

Type Name Author ISBN URL Additional information Examination material
Lecture slides   Lectures   Matti Linjama       Lecture material will be delivered via Moodle.   No   


Course Mandatory/Advisable Description
IHA-1102 Hydrauliikan ja koneautomaation perusteet Mandatory    
IHA-2609 Modelling of Fluid Power Components Advisable    

Additional information about prerequisites
Basic knowledge about modelling of hydraulic systems with Simulink is needed.

Correspondence of content

Course Corresponds course  Description 
IHA-2576 Digital Hydraulics, 5 cr IHA-2570 Digital Hydraulics, 5 cr  

Updated by: Laine Marja-Liisa, 06.03.2019