how can I rotate links of robot?

I have TRR configuration robot. 1st I have to twist first link(vertical line). then I have to rotate second link(horizontal line) and then have to rotate 3rd link(horizontal line).

Answer 1

[Shreshth]

Hi Priyank,

To rotate the links of a TRR (Twist-Rotate-Rotate) configuration robot, you need to control each joint individually. Here's a step-by-step guide to performing these actions:

1. Twist the First Link (Vertical Line):

• This involves rotating the first joint, which is typically a revolute joint allowing rotation around a vertical axis.
• Control Mechanism: Use a motor or actuator to rotate the joint to the desired angle.
• Programming: Send a command to rotate the joint by a specific angle. This could be done using a robotic control software or an embedded system that interfaces with the motor.

2.Rotate the Second Link (Horizontal Line):

• The second joint, also a revolute joint, allows rotation around a horizontal axis.
• Control Mechanism: Similar to the first joint, use a motor or actuator to achieve the desired rotation.
• Programming: Adjust the joint angle by sending a command to your control system. Ensure the rotation is smooth and within the mechanical limits of the joint.

3. Rotate the Third Link (Horizontal Line):

• The third joint also rotates around a horizontal axis, typically parallel to the second link's axis.
• Control Mechanism: Use a motor or actuator to rotate this joint.
• Programming: Command the joint to rotate to the required angle, taking into consideration the desired end-effector position and orientation.

General Considerations:

• Coordinate System: Ensure you have a clear understanding of the robot's coordinate system and joint limits to prevent collisions or damage.
• Kinematics: If you're calculating positions programmatically, use forward and inverse kinematics equations to determine the necessary joint angles for a desired end-effector position.
• Safety: Implement safety checks and limits in your control system to avoid exceeding mechanical limits or causing harm to the robot or its surroundings.

Thanks