| 摘要 |
PURPOSE:To provide a controller for a DC motor in which a variation in torque can be reduced only by adding a simple circuit. CONSTITUTION:The controller for a DC motor comprises a control amount regulator Q2 for regulating a control amount signal of a main current controller Q1 based on an output command signal Vi to a motor M, a current detecting resistor Rd for detecting a motor current, a first feedback circuit C1 for negatively feeding back a current detection signal to the control amount signal, a second feedback circuit C2 for negatively feeding back an input voltage signal to the control amount signal, and feedback amount distributors R2, R3 for setting distribution of negative feedback amounts of the first and second feedback circuits. A variation in torque can be reduced by a simple configuration by suitably setting a distribution ratio of the distributors R2, R3. |
