In the vast "chip city" of modern semiconductor wafer fabs (FAB), the overhead crane handling system flying on the air track is like an efficient "intelligent transportation network". How can OHT achieve efficient, smooth, and non-destructive aerial transfer of wafers between hundreds of processes? It cannot be separated from a powerful and intelligent driving core behind it.
The core challenge of overhead crane OHT
1. Space limit: The internal structure of the overhead crane and trolley is compact, requiring maximum loading capacity within a limited space. The drive and motor must be small yet strong, light yet powerful.
2. Stable and reliable: Wafer value is expensive, and any system jitter or sudden shutdown can cause huge losses. The servo system must be extremely stable and rock solid.
3. Intelligent and easy-to-use: Complex production lines require the system to be able to quickly debug and intelligently adapt to different working conditions, reducing the technical dependence on debugging personnel.
High tech Innovation Gold Combination - SmartPX&PH3
In the face of challenges, Gaochuang's smartPX all-in-one drive machine and PH3 servo motor are not simply component stacking, but an integrated solution with deep collaboration and complementary performance, bringing comprehensive performance leaps to OHT.
Advantage 1: Extremely compact, freeing up the interior space of the overhead crane
Highly integrated: The smartPX adopts a six axis integrated drive design, replacing traditional multiple independent drivers, greatly simplifying the electrical structure and saving valuable space.
Lightweight and powerful: The PH3 motor contains powerful power in its compact structure. The combination of the two perfectly meets the demanding requirements of the crane for "small volume, large energy", providing a hardware foundation for increasing loading capacity.
Advantage 2: Extremely stable, guarding every precious wafer
Intelligent vibration suppression:SmartPX is equipped with various advanced vibration suppression technologies, which can effectively suppress mechanical resonance; Its input shaping filtering function can perfectly eliminate the mechanical jitter at the end of the crown block during startup, shutdown, acceleration and deceleration, and ensure that the wafer is "as stable as Mount Tai" during high-speed operation.
Power guarantee:The PH3 motor can provide up to 3.77 times the overload torque within the rated 3000rpm to cope with sudden loads; At the same time, it can still provide at least 1 times the rated torque in high-speed sections (up to 7000 RPM), ensuring smooth switching between straight-line acceleration and cornering.
Low temperature reliability:Under rated operating conditions, the PH3 motor has a casing temperature rise of no more than 60K, excellent heat dissipation, stability, and durability, which fundamentally avoids alarm shutdown caused by overheating and provides protection for achieving "zero loss transmission".
Advantage 3: Ultimate Intelligence, Empowering Efficient Deployment and Operations
One click self-tuning:The smartPX, when paired with a PH3 motor, can quickly achieve optimal control parameter matching through a one click self-tuning function, simplifying the complex debugging process and significantly reducing the time to market for the device.
Adaptive control:The solution supports the use of a gain meter, which can automatically switch control parameters for different working conditions such as straight-line high speed, curved low speed, etc. of the overhead crane, achieving high-performance adaptive control throughout the entire process.
Friction force compensation:The friction force automatic compensation function of smartPX can overcome nonlinear factors in the system, ensuring precise positioning and smooth speed control at any point.
In the precise field of semiconductor manufacturing, every detail determines the ultimate success or failure. The smartPX&PH3 integrated solution provided by Gaochuang Motion Control, with its highly integrated, excellent performance, ultimate stability, and intelligent and easy-to-use collaborative advantages, has successfully resolved the core pain points of the overhead crane OHT system and become a reliable cornerstone for high-speed transportation of semiconductor wafers in the air.
