Electric Motors and Motion Control. Ara Knaian. Motors. Motors convert electrical energy to mechanical energy Motors make things move. LINEAR. DC BRUSH. INDUCTION. ELECTROSTATIC. STEPPER. UNIVERSAL. How a DC Motor Works. Brushes. How a DC Motor Works. Motor Modeling.
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Voltage and Current In
Torque and Speed Out
Power In = Power Out
Torque is proportional to current
In an ideal motor (R = 0), speed is proportional to voltage
At constant voltage, speed goes down as torque goes up
Like Low Voltage (slow)
Like High Voltage (fast)
Set Point (desired position, velocity)
Measured Output (position/velocity)