Motor+Control

Stephanie: 10/1/09:



MOSFET H-bridge Circuit:

*N1 and N4 can be omitted if Vmax=
 * Switching Signals |||||||| N-channel MOSFETS |||| P-channel MOSFETS || Load current direction ||
 * S1 || S2 || S3 || S4 || N1 || N2 || N3 || N4 || P1 || P2 || Through Load ||
 * ON || OFF || ON || OFF || ON || OFF || ON || OFF || ON || OFF || Left to Right ||
 * OFF || ON || OFF || ON || OFF || ON || OFF || ON || OFF || ON || Right to Left ||


 * High voltage bus: use P-channel Mosfet
 * Low voltage bus: Use N-channel Mosfet

POWER CALCS: [|MotorcontrolPowerCalcs.doc]

PWM:

Duty cycle= (time signal in high state/Period of cycle)*100

General H-bridge circuit:
 * BLOCK DIAGRAM:**


 * S1 || S2 || S3 || S4 || Action ||
 * 1 || 0 || 0 || 1 || Motor moves Right ||
 * 0 || 1 || 1 || 0 || Motor Moves Left ||
 * 0 || 0 || 0 || 0 || Motor free runs ||
 * 0 || 1 || 0 || 1 || Motor Brakes ||
 * 1 || 0 || 1 || 0 || Motor Brakes ||