Method for diagnosing a robot, device and server

A method for diagnosing robot, comprising:

• receiving a first signal or spectrum information about the first signal from a robot, the first signal at least comprising motion information of a rotating component;
• obtaining a frequency amplitude of a sub-component of the rotating component based on the received first signal or the received spectrum information, wherein the frequency amplitude is determined from a spectrum of a resampled first signal based on physical characteristics of the sub-component, wherein the physical characteristics comprise one or more dimensional parameters of the sub-component;
• detecting a failure of the sub-component by comparing the frequency amplitude with a threshold amplitude;
• and
• sending a second signal to the robot, the second signal comprising diagnostic information indicating whether the sub-component of the rotating component has a failure.

A device, comprising:

• a controller;
• a memory coupled to the controller and storing machine-executable instructions which, when executed by the controller, cause the robot to perform acts comprising:
• obtaining a first signal generated by a rotating component of the robot during operation of the robot, the first signal comprising motion information of the rotating component;
• preprocessing the first signal to filter out a part of the motion information in the first signal, wherein preprocessing the first signal comprises determining a spectrum of the first signal;
• sending the preprocessed first signal and spectrum information about the preprocessed first signal to a server for diagnosing the robot, wherein the spectrum information comprises a frequency amplitude of a sub-component of the rotating component, wherein the frequency amplitude is determined from the spectrum of a resampled first signal based on physical characteristics of the sub-component and a speed of the sub-component, wherein the physical characteristics comprise one or more dimensional parameters of the sub-component;
• and
• receiving a second signal from the server, the second signal comprising diagnostic information which indicates a failure of a sub-component of the rotating component.

A server, comprising:

• a controller;
• a memory coupled to the controller and storing machine-executable instructions which, when executed by the controller, cause the server to perform acts comprising:
• receiving a first signal or spectrum information about the first signal from a robot, the first signal at least comprising motion information of a rotating component;
• obtaining a frequency amplitude of a sub-component of the rotating component based on the received first signal or the received spectrum information, wherein the frequency amplitude is determined from a spectrum of a resampled first signal based on physical characteristics of the sub-component, wherein the physical characteristics comprise one or more dimensional parameters of the sub-component;
• detecting a failure of the sub-component by comparing the frequency amplitude with a threshold amplitude;
• and
• sending a second signal to the robot, the second signal comprising diagnostic information indicating whether the sub-component of the rotating component has a failure.