Monitoring system for predicting gearbox lifespan

A method of monitoring a gearbox, comprising:

• measuring a concentration of debris particles in a lubricant of the gearbox using a first sensor;
• determining a data indicative of a deterioration of the gearbox using a second sensor;
• estimating, via a controller, a concentration of debris particles in the lubricant based on the data using a mathematical function stored in a memory of the controller;
• estimating a remaining useful life of the gearbox, via the controller, based on a difference between the concentration of debris particles measured and the concentration of debris particles estimated to be in the lubricant;
• and
• correcting the mathematical function, via the controller, when the difference between the concentration of debris particles measured and the concentration debris particles estimated to be in the lubricant over a period of time is above a first threshold difference and below a second threshold difference.

A mobile machine, comprising:

• a frame;
• a power source mounted to the frame;
• a traction device mounted to the frame;
• a gearbox drivingly connected between the power source and the traction device, wherein the gearbox contains a lubricant;
• a first sensor configured to measure a concentration of debris particles in the lubricant;
• a second sensor configured to generate data indicative of a deterioration of the gearbox;
• and
• a controller in communication with the first and second sensors, the controller being configured to:
• estimate a concentration of debris particles in the lubricant based on the data from the second sensor using a mathematical function;
• estimate a remaining useful life of the gearbox using the mathematical function when a difference between the concentration of the debris particles measured by the first sensor and the concentration of debris particles estimated to be in the lubricant over a period of time is below a first threshold difference;
• and
• correct the mathematical function when the difference between the concentration of debris particles measured by the first sensor and the concentration of debris particles estimated to be in the lubricant over the period of time is above the first threshold difference and below a second threshold difference.