Source: DC Motors, Speed Controls, Servo Systems, Electro-Craft Corp., 1980īlue W aveform – Motor Voltage Red W aveform – Filtered motor voltage Speed-torque curves for terminal voltages of 10, 20, and 30 V. So current controls the motor’s torque, but voltage controls the motor’s speed. Conversely, if you hold the speed constant as indicated by the blue line, and steadily increase the motor’s current, the torque will go up. As you steadily increase the voltage on the motor terminals, the speed will go up proportionally. Let’s assume you have a constant torque load, as shown by the red vertical line below. Motor Basic – Key terms for motor control Zhang Chen Jian MAT, MDBU,ĭC motor behavior Basing on DCM model, analyze potential control : īrush DC Motor Speed-Torque Curves Increasing Voltage
