Cycle Time / Units Per Hour

Cycle time is how many seconds one unit of work takes; UPH is how many units get done per hour.

Cycle time is how long it takes a station on a production line to complete one operation, or for an entire line to output one finished unit; UPH (Units Per Hour) is the number of units produced per hour, roughly equal to 3,600 divided by the cycle time in seconds. Manufacturing also uses “takt time,” the target cycle time derived by working backward from customer demand. This pair of metrics is the most direct test a robot faces entering a factory: what the factory cares about isn't whether a robot can do the job at all, but whether it can do it reliably within the required cycle time. Many current humanoid robots and VLA policies move relatively slowly and don't reach 100% success, so their cycle time often lags a skilled worker's — a main reason they're still hard to substitute for humans on the line, and a real-world driver behind work on inference acceleration and action chunking.

ExampleIf a sorting station has a 6-second cycle time, UPH is 600; if a robot needs 12 seconds per item, it would take two robots to match one worker's output.

Also called

UPH

Related

Return on Investment / Payback Period · Mean Time Between Failures · Factory Pilot Deployment · Machines Replacing Humans · Inference Latency · Sorting

Sources

Takt time - Wikipedia
Throughput (business) - Wikipedia