How to control the force of robot servo

Abby Brown's picture


Joined: Mar 19, 2021

Replies: 3
How to control the force of robot servo
June 28, 2021 - 6:43am

At present, there are more and more types of humanoid robots on the market. Many businesses use humanoid robots as a way to absorb passenger flow. Robot dancing is still a relatively novel thing, so many consumers will be absorbed.

However, among the humanoid robots currently produced, the repair rate of the servo is a problem that disturbs the robot companies.

Don't underestimate the humanoid robots doing dance moves. It wears a lot to the servo, which is why the servo repair rate of humanoid robots is high.

In a humanoid robot, the servo actor connects the connectors of various agencies, just like human joints.

Therefore, the servo is a very critical component in the humanoid robot. It determines the fluency and accuracy of the robot's actions. This is also the reason why the robot companies are doing their best to develop the servo.

The power of the servos sold in the ordinary market is fixed in the initial design. Therefore, if you want to increase the power of the servo, you can only increase the voltage and current. This requires some special motor drives, and the AMtek motor developed by Jingzhi Semiconductor The low internal resistance and high current characteristics of the drive can just reduce the ineffective power consumption in the servo, thereby increasing the motor efficiency and output torque.

There are many servos on the market for robot companies to choose from, but different servo operations are different:

The difference is mainly in the structure and PID calculation method. Different types of servos will cause differences in PID calculation, output torque, angular velocity, etc. due to different application centers.

For example, the different PID calculations of the servos will affect the time required for the servo angle to reach the positioning and the torque required during the period. Even the same servos with the same surface may have completely different results at the same position due to the difference in PID calculations.

Therefore, when robot companies choose servos, they must choose according to the application parts. For example, the servos in the hands require more precise control, and the stability and accuracy of the servos are very high. However, the servos in the legs require more precise control. To support the entire body and maintain balance, a servo with a large torque is required.

In addition, if you want to make the service life of the servo shorter, you must consider the use of a brushless motor and a magnetic sensor for the servo. Because the traditional potentiometer uses a contact mechanism, it is easy to wear and cause the accuracy of the servo to drop or produce vibration.

To ensure the stability of the servo, the accuracy and efficiency of the robot's actions are the biggest relationship. Minimize the operation time of the servo, reduce the chance of motor vibration and gear operation loss, and increase the life and stability of the servo. Use AMtek driver IC Can provide more precise work and work efficiency, thereby improving the service life and stability of the servo.

Due to the different sizes of humanoid robots currently produced, there are different needs for servos. For robot companies, whether it is outsourcing servos or self-developed research and development, reducing the repair rate of servos is a matter of burning eyebrows.


Sourav Gupta's picture


Joined: Feb 12, 2018

Replies: 632

Thank you for the information.