Electric Motors Ara Knaian. Human Power Line Shaft.

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Presentation transcript:

Electric Motors Ara Knaian

Human Power

Line Shaft

Electric Power

AC Motors Nikola Tesla

Tools with Individual Motors

Motors Motors convert electrical energy to mechanical energy Motors make things move LINEAR ELECTROSTATIC DC BRUSH STEPPER INDUCTION UNIVERSAL

DC Motors

How a DC Motor Works Brushes

How a DC Motor Works Brushes

Motor Modeling Voltage and Current In Torque and Speed Out Heat Out Power In = Power Out

Motor Modeling

Pittman Motor Data Sheet

Bidirectional Motor Drive: H-Bridge

Speed Control: PWM Like Low Voltage (slow) Like High Voltage (fast)

Rotary Shaft Encoder

Practical Motor Controller Block Diagram Motor Mechanical System EncoderH Bridge Limit Switch Microcontroller

Stepper Motors

Stepper Motor Selection Permanent Magnet / Variable Reluctance Unipolar vs. Bipolar Number of Stacks Number of Phases Degrees Per Step Microstepping Pull-In/Pull-Out Torque Detent Torque

Power Transmission Tw = Tw Tw = Fv

Induction Motors

Universal Motors

LINEAR MOTORS

Tubular Linear Motor

CNC Router with Linear Motors?

Electropermanent Stepper Before Installation of CoilsAfter Installation of Coils Rotor Stator Alnico Fe Nd-Fe-B Copper Wire Coil

Electropermanent Stepper

Operation Time V1 V2 T T pulse T pulse = 100μs T = 40 ms