µDcStep is designed to preserve motion accuracy when the system is subjected to transient overloads or unexpected disturbances. In infusion pumps, these events can occur during syringe loading, startup, rapid flow changes, or when mechanical resistance increases abruptly due to downstream occlusions or friction changes. Under such conditions, a stepper motor driven at a fixed velocity may exceed its available torque margin, leading to step loss and dosing inaccuracies.
µDcStep prevents missed motor steps by automatically slowing the motor when torque demand exceeds safe operating limits, ensuring accurate positioning and consistent fluid delivery.
TriCoder complements this by detecting manual motor movement and maintaining position awareness without external encoders. Together, they improve dosing accuracy, increase system robustness, and simplify infusion pump design.
Together, µDcStep and TriCoder complement StallGuard+ and CoolStep+ by extending intelligence beyond efficiency and load monitoring into motion integrity, fault resilience, and system optimization. The result is a stepper motor control system that not only operates quietly and efficiently, but also maintains accurate, repeatable dosing under real-world mechanical disturbances while enabling more compact and cost-effective pump designs.
Applicable Part Numbers
| Digikey Part Number | Manufacturer Part Number |
|---|---|
| 175-TMC5262AFV±ND | TMC5262AFV+ |
| 175-TMC5262AFV+TTR-ND,175-TMC5262AFV+TCT-ND,175-TMC5262AFV+TDKR-ND | TMC5262AFV+T |
| 175-TMC5262-EVKIT-ND | TMC5262-EVKIT |