Syringe pump and related method

A syringe pump, comprising:

• a housing;
• a syringe seat configured to retain a syringe having a barrel and a plunger;
• a motor configured to rotate a lead screw;
• a sliding block assembly threadably engaged with the lead screw and translatable along the lead screw in response to rotation of the lead screw;
• a plunger head assembly coupled to the sliding block assembly and configured to advance the plunger;
• a first sensor configured to generate a motor rotation signal;
• a second sensor configured to generate a rotational position signal of the lead screw;
• a third sensor configured to generate a linear position signal of the sliding block assembly;
• at least one processor configured to:
• determine an expected linear displacement of the sliding block assembly based on at least one of the motor rotation signal or the rotational position signal;
• compare the expected linear displacement to the linear position signal;
• detect a discrepancy among the motor rotation signal, the rotational position signal, and the linear position signal;
• and
• control operation of the motor based on at least two of the signals in response to detection of the discrepancy.