In a robot boxing match, the intention was to deliver a powerful punch to knock out the opponent, but the punch lacked force; the robotic dog attempted a flip but got stuck mid-air, landing awkwardly.
The strength of the punch thrown by the robot, its reaction speed, and the fluidity of its movements are all closely related to the joint motors. Weichuang has launched a GaN joint motor solution, integrating a 24-bit high-precision magnetic encoder, an MCU with EtherCAT communication, and GaN technology, reshaping robot joint performance!
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Ultra-High Precision, Movements as Smooth as a Human
The 24-bit magnetic encoder has a resolution that is 8 times higher than the traditional 16-bit (the 24-bit product has an effective bit of 16 bits + 8 bits for parity, which is 8 times more accurate than the usual 16-bit (effective bits of 13 bits)), allowing angle control to be precise to 0.02°! Under such conditions, the robot can easily perform complex movements, whether it’s a precise punch or an elegant turn, all flowing naturally, just like a human.
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Nanosecond-Level Response, Fast as Lightning
High-performance MCU paired with 100Mbps EtherCAT communication, speeds have increased from microseconds to nanoseconds. The joint’s transient response is extremely fast, blocking, dodging, and delivering powerful punches, each move is swift and decisive.
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511W/kg Top-Level Energy Efficiency, Strong Endurance
GaN devices increase the drive frequency to 100kHz,
with a dead time as low as 10ns.
Compared to traditional MOSFET solutions, overall efficiency is improved by 12%, with a power density of up to 511W/kg!
Lower joint losses and greater strength give the robot a truly continuous beating “heart”.
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Innovative Thermal Management, Low Temperature Rise Ensures Endurance
Because GaN devices use a more advanced packaging design, heat can be dissipated directly through the top shell of the device, making it easier to manage heat compared to conventional MOSFETs that rely on copper spread through the bottom pads; it also prevents heat from reaching sensitive PCB boards, significantly upgrading thermal management!
Weichuang conducted thermal simulation using FlothermXT, and after applying a single-component thermal conductive gel to the GaN, the full-load temperature of the power section dropped from 134°C to 68°C, a reduction of half! At this point, the robot joints can remain cool, powerful, and not fatigued, allowing for prolonged high-intensity operation without pressure!
↑ Traditional cooling methods, temperature exceeds 130°
↑ After applying GaN with single-component thermal conductive gel
↑ The full-load temperature of the power section dropped from 134°C to 68°C
The Weichuang GaN joint motor solution, with its core advantages of 24-bit precise angle acquisition, EtherCAT 100Mbps communication speed, GaN 100kHz ultra-fast drive frequency, and 511W top-level energy efficiency, enables robots to react faster, move more steadily, exert greater force, and run further.
In addition, the Weichuang Hard Innovation Platform provides one-stop services for robot joint motors, from solution design and technical support to procurement. Besides GaN intelligent joints, the platform also offers frameless torque/hollow cup motors, dexterous hand tactile sensors, joint position sensing solutions, and thermal design simulation services. Reply with the keyword “GaN Intelligent Joints” to get more solution materials.