Industrial Automation as a Cloud Service Presented by: Alaa Eldin Abdelaal and Maram Sakr 8/24/2015
Outline Brief summary of the paper “ Industrial Automation as a Cloud Service”. Current automation architecture. Proposed architecture. Challenges with the new approach. Proposed solutions and the results. The wind turbine control system. The demo. 8/24/2015
Current automation system architecture Programmable Logic Controller(PLC) Programmable Automation Controller (PAC) 8/24/2015
Proposed architecture Cost saving up to 57% and time to start up reduction by up to 85%. 8/24/2015
challenges with the proposed architecture Timeliness. Reliability. Security(Outside the scope). The paper addresses the L1 requirements 8/24/2015
Delay compensation 8/24/2015
Delay compensation results Mean= 4 s, Standard Deviation= 2.8 s, max=20 s The delay compensator kept the controlled process from overshooting and from deviating from the final value. 8/24/2015
Fault tolerance This is done through the reliable cloud controller (RCC) algorithm that has some guarantees. 8/24/2015
RCC Guarantees G1 : If the primary controller fails, the secondary controller is automatically hot-swapped in. This guarantee is generalizable to higher redundancy. G2 : If the failed primary controller recovers, it takes over, forcing the secondary controller out of action. G3 : Handover of controllers is performed smoothly causing no undesirable transient response artifacts. 8/24/2015
Fault tolerance results 8/24/2015
The previous demo Tank level control system One loop Desktop HMI application The delay compensator and the fault tolerance work separately. 8/24/2015
The new system Wind turbine control system that has: Two control loops. Higher order systems. Delay compensator and fault tolerance integrated together. Web based HMI. 8/24/2015
Wind turbine control system Wind Turbines are now considered one of the main sources of renewable energy. The main idea of a wind turbine is to convert the energy of the wind into electrical power. To achieve a high efficiency, control systems are used in different parts of the wind turbine. In our work, two control systems are considered; the yaw control system and the rotor speed control system. 8/24/2015
The yaw control system The main purpose of this system is to change the direction of the wind turbine as a whole based on the direction of the wind. 8/24/2015
The rotor speed control system This control system is used to regulate the rotation speed of the wind turbine blades, i.e. the rotor speed, by controlling their angle of attack (pitch angle). 8/24/2015
Wind speed versus generated power In the below rated area(region I) Power optimization In the above rated area (region II) Power Limitation 8/24/2015
The demo The primary controllers are in a VM in Singapore. The secondary controllers are in a VM in Sao Paulo, Brazil. The emulated plant in Vancouver. The HMI is accessible through the web. 8/24/2015
Thank you 8/24/2015