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Aerotech’s Galvo Scanner Controller with 192 kHz Servo Rate and Position-Based Laser Control
November 28, 2018 | AerotechEstimated reading time: 1 minute
Aerotech’s GL4 scanner controller is optimized for Aerotech’s family of AGV scanners to provide industry leading settling times, long-term thermal stability, and micron-level tracking accuracy due to advanced features such as full state feed-forward, 192 kHz servo rates, and look-ahead-based velocity control. The GL4 uses advanced interpolation electronics to provide up to 26-bits of effective resolution while onboard real-time 2D calibration ensures accurate beam placement over the entire field of view.
The ability to accurately place a laser spot as a function of X/Y axis position is a key feature of Aerotech’s linear positioning tables for laser processing applications. With the release of the GL4, this functionality is now available for scanner applications. The ability to accurately trigger the laser as a function of position removes the need to program mark, jump, and polygon delays, resulting in reduced programming complexity. By using the Position Synchronized Output functionality, scanner-based processes can now be programmed in the same fashion as traditional X/Y stage-based applications.
Most competitive scanners have the power devices integrated directly into the head, along with the galvos and feedback devices. These power devices inject thermal energy into the scanner head causing drift in the feedback positions and changing offsets between the mirrors, which reduce marking accuracy. Some systems use PWM power stages to minimize heat input. However, this approach results in reduced tracking accuracy due to nonlinear effects when the galvo motors and control currents reverse polarity. By moving the power stage out of the head, it is possible to use higher performing transistors to drive the galvos and the heat source is effectively removed from the scanner resulting in improved system accuracy.
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Real Time with... IPC APEX EXPO 2024: Advancements in Laser Depaneling with LPKF
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Mycronic Receives Order for an SLX Mask Writer
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Plastronics and the New IPC Guidelines for In-mold Electronics (IME)
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MKS Introduces ESI Geode G2 CO2 Laser System for High- Precision and High-Speed HDI and mSap Via Drilling
04/09/2024 | MKS Instruments, Inc.MKS Instruments, Inc., a global provider of technologies that transform our world, today announced the official launch of the ESI Geode™ G2 laser drill system, the next generation of the Geode™ platform for processing PCB and ICP materials.