Control Design
The development of effective control strategies is a core skill of ISC engineers. A proper assessment of the process as a whole is undertaken, including effects on neighbouring/coupled systems and processes. Control objectives, disturbances, nonlinearities, uncertainties, robustness and noise immunity are all considered when a control strategy is developed. Solutions can range from simple classical feedback/feedforward to advanced control, such as model-based methods like MPC or methods like Fuzzy Logic control. However, simplicity is a key objective in our solutions, providing performance criteria can be met.
The effectiveness of a design is usually proved in simulation to allow it to be commissioned with confidence, and comparison with existing control can show the expected benefits.
Our designs are normally implemented by the client or a preferred system integrator, though we provide implementation advice. Where requested, we have on several occasions undertaken the implementation stage in our scope.
"Simplicity is a key objective in our solutions, providing performance criteria can be met."
Example Projects:
- Ship Roll Stabilisation Optimisation and Control - Gain scheduled controllers were optimised using models of vessel and wave dynamics. The solution was then tested on a nonlinear model of the vessel, and ISCs solution out-performed more advanced methods developed by academic groups.
- Heave Compensation on Survey Vessel - Models of ship motion and heave compensation control were developed. The new control algorithm was implemented on the ship's PLC and commissioned at sea. (Download project presentation)
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