Collaborative robots, or cobots, require four key characteristics to function effectively and safely alongside humans. To achieve this, they must possess the ability to sense, control, and regulate torque. By detecting even minor torque fluctuations in their surroundings and responding quickly to prevent collisions, cobots make the collaborative process smoother and safer.
One critical component of achieving this capability is the integration of an ultra-compact, high-performance servo drive directly onto the robot's joints. This design not only keeps the robot compact but also allows the servo drive to be positioned close to the encoder feedback. This proximity reduces cabling needs, minimizes interference, and enhances overall system stability by lowering electromagnetic interference (EMI) and radio frequency interference (RFI). Furthermore, the inherent durability of the drive ensures it can endure the intense mechanical stresses typical of robotic joints.
Another essential feature is the implementation of a double closed-loop control algorithm. This sophisticated system optimizes the performance of the servo motor, significantly improving the positioning accuracy of the robot’s end-effector. The speed loop feedback is provided by an incremental encoder and Hall element located before the gearbox, while a high-resolution 19-bit absolute encoder serves as the load-end position feedback, ensuring precise control.
Kinematic redundancy is another vital aspect, particularly when operating multiple robots in confined spaces. With more than six degrees of freedom, robots like the 7-joint model can reach specific points in various configurations, offering advantages in obstacle avoidance, singularity resolution, flexibility, and fault tolerance. Industrial applications benefit greatly from this adaptability, especially in complex environments.
Torque sensors play a crucial role in human-robot collaboration, enabling cobots to execute high-speed, high-precision tasks while maintaining safety. Equipped with cameras and force sensors, these robots can perceive human presence and adjust their actions accordingly. Torque sensors can be positioned behind the motor gearbox to detect sudden increases in external torque, triggering immediate shutdowns in case of collisions. They also help the robot apply the necessary torque to lift loads and move them between positions.
Safety sensors are equally important for ensuring worker safety. These sensors, available in various forms such as cameras and lasers, monitor the robot's surroundings to detect obstacles or hazards. For instance, laser-based safety sensors on doors instantly halt operations upon detecting an obstruction, preventing accidents—a principle widely adopted across the robotics industry.
In applications involving parts handling without vision systems, part detection sensors provide crucial feedback on whether the gripper has successfully picked up a part. If the gripper misses its target, the system identifies the error and attempts the pick again, ensuring operational reliability.
These advancements collectively enhance the functionality, precision, and safety of collaborative robots, making them indispensable tools in modern manufacturing and automation processes.
DC Cable
Dc Cable,Dc Power Cables,Dc Extension Cable,Dc Waterproof Cable
ShenZhen Puchen Electronics Co., Ltd. , https://www.szpuchen.com