Repeatability of Linear Actuator- Ningbo Alpha Automation Co., Ltd.

The repeatability of Linear Actuator is one of the key indicators for evaluating its performance and reliability. So what is repeatability? Repeatability refers to the accuracy and consistency of the Linear Actuator's ability to return to the target position each time when performing the same motion task multiple times. It measures the ability of the Actuator to accurately reproduce the predetermined position in multiple movements. This parameter is usually expressed in microns (μm) or smaller units because modern industrial and scientific applications have increasingly higher requirements for position accuracy.

Factors affecting repeatability
Mechanical structure design: The mechanical structure design of the Actuator directly affects its stability and accuracy during movement. For example, the use of high-precision screw drive systems, precision-machined guide rails and sliders, and optimized bearing systems can reduce mechanical clearance and vibration and improve repeatability.

Drive system: Different types of drive systems have different effects on repeatability. Electric actuators usually have higher positioning accuracy, especially when using a closed-loop control system; hydraulic and pneumatic actuators may have slightly lower positioning accuracy due to their pressure transmission and valve control characteristics, but have advantages in force output and speed.

Control algorithms and feedback systems: Advanced control algorithms and sophisticated feedback systems (such as encoders or displacement sensors) can monitor and correct the position of the actuator in real time, thereby improving positioning accuracy and stability. Closed-loop control systems are particularly suitable for applications with strict position control requirements, such as semiconductor manufacturing and precision assembly.

Environmental factors: Factors such as temperature changes, humidity, and environmental vibration may affect the motion accuracy of the actuator. Therefore, in some special environments, it may be necessary to consider using anti-vibration design, temperature compensation measures, or a closed environment to ensure stable repeatable positioning accuracy.