Handy Kitchen Liquid Food Viscometer Using a DC Motor as Actuator and Sensor

Liquid food can likely cause accidental ingestion in patients with dysphagia. This study proposes a handheld stirrer-type rotational viscometer that be used the kitchen or at meals for A novel is proposed considering rotation speed of stirrer inversely proportional to viscosity fluids stirred. We adopt sensorless control strategy. use small brush-type DC motor, which functions as rotary actuator and sensor realize device. Because aforementioned fields, it must compact, handy, simple structure, low-cost. apply viscosities ranging from 5000 54000 mPa·s testing, using cylindrical rotor length 15 mm diameter 10 mm. The repeatability linearity measurement instrument evaluated by ASTM standards E3116-18 are less than 5% 4% under temperature 11 °C, respectively. thickness liquid classified into only three categories (mildly, moderately, extremely thick), accuracy this method sufficient measurement.