Motion control company, Moog, has developed a compact electric multi-axis system that allows auto makers to test components such as seatbelt anchors in a lab setting. Most automotive component makers currently rely on hydraulic systems for testing assemblies. Yet growing concerns about reliability, maintenance, and safety with older hydraulic test systems have led some carmakers to look for alternative test rigs.

Automotive electric test systems, automotive hydraulic test systems, Moog, servo motors

Moog’s engineers designed the electric test system’s actuators to remain stable during use and arranged the harnesses in a way that eliminates interference with the actuators in any position. (Source: Moog)

Moog representatives pointed to some of the specific problems carmakers cite with their hydraulic test systems:

  • Many are large and respond slowly
  • They leak oil and create environmental issues
  • Many of the systems require a complex infrastructure, including a cooling tower

Moog developed an electric system built on recent technology. Prior to advances in servo motors, the hydraulic system was the only choice. “People traditionally did hydraulics because it’s a known technology,” Craig Lukomski, manager for solutions commercialization, simulation, and test, at Moog, told Design News. “Electric test systems have become more prevalent in the last five years. Things have changed in electric. Servo motors offer competitive cost, and the technology has matured in recent years.”

Read more: Electric Automotive Test System Provides an Alternative to Hydraulics