SMST is a company located in Drachten, the Netherlands which specializes in the delivery of lifting, transportation, drilling and pipelay solutions, particularly for the maritime and offshore industry. SMST provides a range of Telescopic Access Bridges (TAB) that can transfer personnel safely to an offshore structure or the quay side. A recent introduction is the motion compensated TAB-M series. Controllab has designed the motion compensation control algorithms for this bridge.
Model Based Design
With model based design, a simulation model is used to design the control system of the bridge. This allows a large set of destructive
and non-destructive scenarios to be simulated to test the performance and safety of the control system. After the control system has been successfully tested using simulations, it can be exported as C-code to the PLC and coupled with the safety and communication modules. The resulting PLC can again be tested by coupling it with the simulated bridge. This is called Hardware-in-
the-Loop simulation. Controllab was asked to introduce model based design in the control department of SMST, and to provide tooling and training for this novel design method.
Controllab is active in the Marine and Offshore market for more than 20 years. Our engineers have gained a thorough understanding of servo hydraulics, electric drives and machine design. They were able to share this knowledge with SMST and help SMST to become one of the leading companies in motion compensated access bridges.