Konferenzen und Rahmenprogramm
Low Voltage Motor Control System Design for Mobile and Wireless IoT Devices…
Many IoT and hand-held devices rely on actuators, despite having limited energy €“ often a battery. These batteries preferably have a low cell count, with a voltage range of 2.4V €“ 4.3V for most devices, whether it€™s for security, home automation, medical, or POS devices. Actuators in these devices often need only short-term motion, e.g. when adjusting a valve or dosing a medicament. However, limited power restricts both peak power and long-term energy consumption. Thus, energy efficiency is critical €“ even with a low duty cycle. The paper focuses on these challenges of driving a stepper motor with such low voltage, like a single Li-Ion cell or dual AA-Battery, and compares the practical aspects to driving a DC motor from these current sources. Measurements from an example setup show the limitations and deliver performance figures for the motor and driver combination. A topology with step up voltage regulator is compared to a solution with a motor wound for low voltage operation.
--- Datum: 27.02.2020 Uhrzeit: 10:00 - 10:30 Uhr Ort: Conference Counter NCC Ost