Application of Absolute Value Servo Motors in Stage Machinery

In the dazzling world of stage performances, the role of stage machinery is increasingly prominent, with its technical requirements continuously rising alongside innovations in performance forms. Since 2018, YZ DITECH has applied absolute value servo motors in stage machinery, bringing a new technological revolution to stage performances and leading the development trend of servo motors in this field, becoming a key driving force for precise control in stage machinery.

Stage machinery encompasses various complex motion forms such as lifting, sliding, and rotation. These movements require highly precise control to ensure the smoothness and safety of performances. Traditional motor control methods often face many limitations when addressing the complex demands of stage machinery.

For example, traditional incremental encoder motors require a homing operation at each startup, which not only increases operational complexity but can also lead to cumulative positioning errors. Additionally, in stage performances, equipment may be subjected to various interferences, such as electromagnetic interference from lighting equipment and frequent start-stop operations, posing severe challenges to the reliability and anti-interference capabilities of motors.

Absolute value servo motors, with their unique absolute value encoders, bring numerous significant advantages to stage machinery, perfectly addressing the pain points of traditional motor control methods.

1. No Homing Operation Required, Quick Positioning
   Absolute value encoders can directly read the exact position of the motor shaft at any time without the need for a homing operation. This feature is particularly important in stage machinery applications. For instance, in complex stage lifting devices, multiple lifting platforms need precise synchronization. Absolute value servo motors can accurately obtain the position information of each platform at the moment of startup, quickly achieving synchronized control and significantly improving the response speed and control accuracy of stage machinery.
2. High Precision and High Reliability
   Each position of the absolute value encoder is unique and does not rely on previous data readings, thus avoiding errors such as missed counts or accumulated counts. In stage performances, this high precision and reliability ensure the accurate movement of stage machinery, preventing performance errors due to positioning inaccuracies. For example, in stage rotation devices, absolute value servo motors can precisely control the rotation angle, ensuring that dancers or props are accurately positioned during the rotation, enhancing the visual effect and artistic impact of the performance.
3. Strong Anti-Interference Capability
   The stage environment is complex, with various electromagnetic interferences and mechanical vibrations. The absolute value encoder of absolute value servo motors operates independently in terms of data refresh and reading, making it unaffected by interference and capable of stable operation. Even after power failures or equipment restarts, it can immediately return to the accurate position without needing recalibration. This strong anti-interference capability allows stage machinery to maintain stable operation in various complex environments, enhancing the safety and reliability of the equipment.
4. Support for High-Speed Data Transmission
   Modern stage performances demand high precision and response speed from stage machinery. Absolute value servo motors support multiple high-speed data transmission protocols, such as Canopen, Profibus-DP, and Profinet, enabling fast and stable data transmission. This allows stage machinery to receive control commands in real-time and respond quickly to performance needs, achieving complex multi-axis synchronous control. For instance, in the scene transitions of large stage plays, multiple mechanical devices need to operate simultaneously. Absolute value servo motors can ensure the precise synchronization of these devices, making scene transitions smooth and natural.