Test bench construction

High-performance electric
linear actuators

Hochdynamische Linearaktoren – hochdynamisch, extrem präzise und energieeffizient

Test bench construction

High-performance electric
linear actuators

The future is electric

Servo-Electric Linear Motors

Our electric linear actuators enable the generation of translatory movements and forces with fascinating control accuracy and dynamics. In contrast to servo-hydraulic drive axes, our maintenance-free synchronous linear motors also require no pressure oil and significantly less energy.
For you, this means significantly lower operating and maintenance costs with significantly higher performance and a much wider range of applications for the actuator system. In addition, the all-electric implementation offers you high availability of your system and maximum safety for your operating personnel.

Use of linear actuators in testing technology

Our servo-electric linear direct drives can be operated with position, speed, acceleration and force control. Position setpoint specifications with the smallest amplitudes in the range of a few micrometres are tracked just as precisely as setpoint signals with amplitudes of a few hundred millimetres.
Our linear motors are also characterized by a very high synchronization quality (complete compensation of cogging forces / no cogging) even at very low speeds. Due to their many strengths, our electric linear direct drives are therefore predestined for applications in test bench technology in particular, in which very different test and load cases are to be precisely implemented with one actuator system.
Due to their high dynamics, linear motors are also always the first choice when the test case requires forces to be applied to moving components or moving test specimens to be loaded with a constant force.

Typical areas of application in testing technology are

High-performance steering test benches
Function test benches for active vehicle dynamics systems
Test benches for the (high-frequency) characterization of components
Damper test benches
NVH test benches
Vibration test benches

Your advantages at a glance

✅ Highest precision

Unsurpassed accuracy, even with minimal amplitudes.

✅ Highly dynamic

Minimal response times and enormous bandwidth, ideal for virtual test drives and realistic loads with broadband signals.

✅ Best synchronization behavior

Constant speeds even with very slow specifications.

✅ Safe and reliable

Simple implementation of safety functions (e.g. safely reduced speed - SLS) for maximum safety of your personnel and your system. Maintenance-free, robust and time-invariant.

✅ Quiet and clean

Virtually silent operation, ideal for a subjective evaluation of the acoustic properties of your test specimens. Fully electric plug & play solution that requires no pressure oil.

✅ Cost-effective

Highly economical due to low energy consumption and maintenance-free operation.

Servo-electric linear direct drives -
the solution for maximum precision and dynamics

Highest accuracy - regardless of the amplitude

Analysis of the total harmonic distortion (THD) for sinusoidal movements with low amplitudes (left) and high amplitudes (right).

Behaviour at very low speeds

Measured speed as a function of the current position for various target speeds (left) and enlarged for a speed of 1 mm/s (right).

Force control with disturbance compensation

Fault in the force control due to an externally impressed movement (top) and the resulting force curve with deviations from the constant setpoint (bottom).