Robot Manipulators Actuators And Drives

Joints in a robot manipulator are the elements that connect the links allowing for relative movement between the links They provide the means of articulation enabling the robot to perform tasks by controlling the movement of its parts

A single robot used for continuous arc welding is unable to handle the loading and unloading of parts effectively as this requires additional coordination and automation beyond the robot’s movement This issue is typically addressed by introducing additional handling robots or conveyor systems

The assertion is false because the end-effector does contribute to manipulability by affecting the performance and accuracy of the manipulator The reason is true as the end-effector is typically external to the manipulator and is attached at the robot’s arm’s end

Step 1: Understand the sequence in a mechatronic system.
A basic mechatronic system involves:
- Sensing input from the environment using sensors (C),
- Processing the data in a microcontroller or processor (A),
- Generating a physical output using actuators (B),
- Converting the output into a desired form (mechanical, electrical, etc.) (D).
Step 2: Conclusion The correct sequence of steps is: (C), (A), (B), (D). Final Answer:

Step 1: Understand the flow of power in a robotic arm.
- First, the input power source (C) provides the necessary energy.
- The controller (A) sends signals to actuators to initiate movement.
- The actuators (D) convert electrical energy into mechanical motion.
- This motion is then transmitted to joints (B) via gears or linkages.
Step 2: Conclusion The correct sequence of steps is: (C), (A), (D), (B). Final Answer:

Step 1: Understand the definition of an actuator.
An actuator is a device that converts energy into motion. Common types of actuators include:
- Hydraulic actuators (1) use fluid pressure to produce mechanical movement,
- Pneumatic actuators (3) use compressed air to create motion,
- Electric actuators (4) use electric power to create movement.
A digital actuator (2) is not a recognized physical actuator type. Digital refers to control signals or logic, not a direct means of motion generation.
Step 2: Conclusion
Thus, a digital actuator is not a type of actuator.
Final Answer:

Step 1: Understand the function of a stepper motor.
A stepper motor is a type of electric motor that divides a full rotation into a large number of steps, or increments. Each step is an equal angle of movement, and the motor advances one step at a time when it receives a pulse. This makes stepper motors ideal for applications requiring precise, incremental motion. Step 2: Conclusion
A stepper motor produces incremental motion through equal pulses, making it suitable for applications where precise positioning is needed. Final Answer: