The phrase "and designed a system" is correct and usable in written English.
You can use it when describing an action taken to create or develop a system, often in a technical or organizational context.
Example: "After analyzing the requirements, the team implemented the necessary changes and designed a system that improved efficiency."
Alternatives: "and created a system" or "and developed a system".
He and von Flotow developed a launching and landing apparatus and designed a system called the Seascan.
But Boeing engineers also envisaged what would happen if a fire did take place and designed a system that would contain an eventual fire and vent any smoke outside the plane until the aircraft could safely land.
During the competition, Stroup got to build robots, basic missile defense systems, and designed a system to protect the payload on the back of the truck, among other things.
He was the first president of the Good Will Fire Company, holding that office for nearly all of his adult life, and designed a system of levers for use in fire engines.
"To relieve the pressure and design a system that is sustainable and fit to meet future challenges, we need as many patients, doctors, nurses and NHS colleagues as possible to get involved".
We introduce a statistical method and design a system which is able to verify where a vehicle comes from.
And he designed a system for the conversion of graphic stimuli into sound, a programme he called UPIC and which has now morphed into more sophisticated computer software like IanniX.
In this project, we have conducted an in-depth algorithm/architecture study and designed a complete system according to strong footprint constraints.
The "Explicit Bricks" cluster at Smartgeometry 2010 in Barcelona, Spain used an industrial robot, developed a custom hot-wire cutting process, and designed a constructive system of uniquely-formed blocks.
Recently, we used smartphone as a reliable tool to assess body sway parameters and designed a biofeedback system [ 52].
Dr. McCulloch and Dr. Till designed a system to measure bone marrow cells' sensitivity to radiation.
