Servo Angular Acceleration Control for Gearbox Life Extension
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Solution Overview
Problem
The lifespan of servo gearbox gears is limited due to sudden acceleration and deceleration phases, which can cause gear collision and damage, especially when heavy loads are applied, leading to increased material and manufacturing costs to extend their life cycle.
Innovation Solution
A computing terminal device is used to calculate and set an angular acceleration threshold for servos based on loading mass and rotation radius, controlling angular acceleration to prevent gear collision and extend the gearbox life cycle without increasing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the servo undergoes sudden acceleration and deceleration phases, then the speed response is improved, but the gear of the gearbox experiences sudden large forces causing collision and damage
Solution Approach 1:
The control terminal calculates and sets an angular acceleration threshold before the servo operates. This preliminary action establishes safe acceleration limits that prevent gear collision from the outset, rather than reacting to damage after it occurs. The threshold is determined based on servo parameters and gear box characteristics, ensuring the gear system is protected before operational stress is applied.
Solution Approach 2:
The control terminal continuously monitors the servo's angular acceleration and compares it against the predetermined threshold. When the acceleration exceeds the threshold, the system provides feedback by adjusting the control output to reduce acceleration. This closed-loop feedback mechanism ensures speed response requirements are met while preventing gear damage through real-time acceleration management.
2Reliability
If the material and manufacturing process of the gear are improved, then the life cycle of the gear is extended, but the cost increases
Solution Approach 1:
Instead of changing the physical material properties of the gear, the system changes the operational parameters by controlling angular acceleration within a calculated threshold. This parameter-based approach extends gear life by preventing excessive stress and collision, achieving the same reliability improvement as better materials but without the associated cost increase.
Solution Approach 2:
The patent replaces mechanical improvements (better gear materials and manufacturing) with a control system approach. By using electronic control to manage acceleration thresholds, the system achieves gear protection without relying on expensive material upgrades or complex manufacturing processes, thereby extending gear life while maintaining cost-effectiveness.
Data Source
AI summary
The present disclosure relates to a method, a terminal device, and a computer readable storage medium for controlling rotation of a servo. The method includes: acquiring a loading mass and a rotation radius of the servo from a sensor electrically connected with the servo or by an externally input; calculating an angular acceleration threshold of the servo according to an angular acceleration formula, a rated torque, the loading mass, and the rotation radius of the servo; setting an angular acceleration of the servo according to the angular acceleration threshold; and rotating the servo according to the angular acceleration.