Answer: The statement is incorrect.
Answer analysis: Linear actuators provide rotational motion for robot arms. The statement is incorrect.
The statement that "linear actuators provide rotational motion for robot arms" is actually inaccurate.
The roles of linear actuators and rotary actuators in robot arms are different.
The main functions of linear actuators:
Linear actuators are used to generate linear motion, that is, convert electrical energy or other forms of energy into mechanical energy for linear motion.
In robot arms, linear actuators are usually used to drive joints that require linear motion or push-pull motion, such as flexion and extension of knee joints and elbow joints.
The motion paths of these joints are mainly straight or approximately straight, so linear actuators can efficiently meet these needs.
The main functions of rotary actuators:
In contrast, rotary actuators are used to generate rotational motion, that is, convert electrical energy or other forms of energy into mechanical energy for rotational motion. In robot arms, rotary actuators are widely used in joints that require rotational motion, such as shoulder joints, hip joints, and wrists. The flexibility and precision of these joints are essential for robots to complete various complex tasks.
Summary:
Therefore, it can be said that linear actuators do not provide rotational motion for robot arms, but linear or push-pull motion.
Rotary actuators are the key components for robot arms to achieve rotational motion. The two play different roles in the robot arm and work together to complete various complex tasks.
In practical applications, humanoid robots such as Tesla Optimus use a combination of linear actuators and rotary actuators.
For example, the knee and elbow joints of Optimus are driven by linear actuators to achieve flexion and extension of these joints; while the shoulder and hip joints require a larger rotation range and precision, so rotary actuators are used to drive them.
This design not only meets the robot's requirements for flexibility and precision, but also reduces energy consumption and costs to a certain extent.