Precision in Motion: Behind the Actuators Powering AB Dynamics' SPMM
AB Dynamics is a global leader in advanced vehicle testing systems, supplying cutting-edge solutions for both research and development and production quality control. At the heart of their offerings is the Suspension Parameter Measurement Machine (SPMM)—a sophisticated system designed to measure the kinematic characteristics of a vehicle’s suspension and steering systems with unrivalled precision.
Since the first installation in 1996, the SPMM has seen continuous innovation. The latest evolution, the SPMM 5000, is built to handle larger vehicles, supporting wheelbases up to 4,450 mm and loads up to 5,000 kg. Central to its function is a highly coordinated system of six electromechanical actuators, each responsible for precise linear motion across five distinct axes.
These actuators, custom-designed and manufactured by Kelston Actuation, are each independently driven by a dedicated servo motor. Positional control switches work in tandem with these motors, ensuring tight integration with the SPMM’s main control panel and enabling finely tuned, responsive movement.
Inside each actuator lies a bespoke engineering solution: a spiral bevel gearbox rotating a worm and wheel gearset, which in turn drives a high-precision ball screw. This internal design delivers the robust, repeatable motion required for highly accurate suspension and steering measurements.
As the accompanying animation shows, these actuators don’t just move components—they orchestrate a symphony of motion, enabling the SPMM to simulate real-world vehicle dynamics with remarkable fidelity.
Learn more about AB Dynamics at https://www.abdynamics.com
We use cookies to improve website performance, please use the below options to determine whether you're happy with this.