Diagnostic checks of a gear pump in a fluid system

A pumping system, comprising:

• a pump assembly having a first motor driving a first gear and a second motor driving a second gear;
• a fluid system connected to the pump assembly;
• and
• a pump control system, wherein the pump control system includes,
• a pump control circuit configured for operating the first motor to rotate the first gear of a pump and the second motor to rotate the second gear of the pump, the pump control circuit including a sensor for determining a position and/or a velocity of the first gear, and
• a diagnostic circuit connected to the pump control circuit, the diagnostic circuit configured to perform a diagnostic check to determine at least one of a gear wear parameter or an obstruction in the pump, based on the position and/or velocity determined by the sensor.

A method of performing a diagnostic check on a pump, the method comprising:

• operating a first motor to rotate a first gear of a pump;
• operating a second motor to rotate a second gear of the pump;
• determining a position and/or a velocity of the first gear by a sensor;
• performing a diagnostic check to determine at least one of a gear wear parameter or an obstruction in the pump based on the position and/or velocity determined by the sensor.

A method comprising:

• operating a first motor to rotate a first gear of a pump;
• operating a second motor to rotate a second gear of the pump;
• determining a position and/or a velocity of the first gear by a sensor;
• performing a diagnostic check to determine at least one of a gear wear parameter based on the sensor, a calibration drift of the sensor, or an obstruction in the pump using the sensor;
• determining a second position and/or a second velocity of the first gear using a second sensor;
• reading first position information of the first gear from the sensor when a first tooth is at a first reference point;
• reading second position information of the first gear from the second sensor when the first tooth is at the first reference point;
• determining the calibration drift based on a difference between the first and second position information;
• and
• determining, based on the calibration drift, at least one of whether a recalibration is needed or whether a sensor fault exists on the first sensor or the second sensor.

A method comprising:

• operating a first motor to rotate a first gear of a pump;
• operating a second motor to rotate a second gear of the pump;
• determining a position and/or a velocity of the first gear by a sensor;
• performing a diagnostic check to determine at least one of a gear wear parameter based on the sensor, a calibration drift of the sensor, or an obstruction in the pump using the sensor;
• operating the pump at a predetermined speed based on the sensor;
• monitoring feedback that includes at least one of a gear feedback or a motor feedback;
• comparing the monitored feedback to an expected feedback value for the predetermined speed;
• and
• determining, based on the comparison, whether there in an obstruction and/or contaminate in the pump based on a deviation between the monitored feedback and the expected feedback value.