All engineered systems follow a recognized pattern of failure known as the 'bathtub curve'
The timescale for this curve is typically 10-20 years for electronics and 1-5 years for mechanical systems depending on stresses and the purpose of the system. A car, for example, might be expected to show signs of wear after, say 60,000 miles which at an average of 30 mph is only 2000 hours or about 3 months of continuous use. A machine in a production environment might be expected to work 3 shifts a day for, say 2 years before showing signs of wear which would be about 12,000 hours.
It is in the early part of a system's life things are more likely to go wrong. This period is often referred to as infant mortality. Next comes a period of steady but low rate of failure which is usually quantified by MTBF - mean time between failures. The MTBF of an ST robot is approximately 20,000 hours. Finally things begin to wear out (senility). Failure rates begin to gradually increase. The system can continue to be used but will require frequent maintenance and replacement parts.
What sets ST robots apart from the startupsYears of experience!
Designs honed by hundreds of real world applications.
All the bugs are gone.
Keep it simple
Has been our mantra since the day we started.
From 'The Emperor's Old Clothes' by C.A.R.Hoare: "there is one quality that cannot be purchased and that is reliability. The price of reliability is the pursuit of the utmost simplicity."
On the left is the workings of a well known robot arm. On the right is the workings of an ST R12 robot arm.
These are the rules for total reliability:
Keep it safe
So many robot companies show their robot bumping into a person and then stopping. That is totally unacceptable. ST have: