Stay in the Loop. In a closed-loop system, the process begins the same way it does in an open-loop system. But a closed-loop system has one or more feedback loops in place that can adjust the process.

Open-loop systems allow maximum versatility in where consumers can purchase health care items, such as over-the-counter (OTC) products covered by health plans based on a federally approved list.

An open loop version of this process occurs when a person begins to perspire in response to elevated temperature, ... Open-loop feedback systems can increase the scope of activities to be used, ...

Closed Loop MRP was developed during the 1970s as a successor to earlier open-loop ... closed loop systems also help the manufacturer incorporate the return process into their manufacturing loop.

Open-loop systems are fine for light use in clean water. For everyone else, closed-loop systems offer better protection, longer life, and fewer nightmares when something inevitably goes wrong.