Dynamic analysis of printed circuit DC motor

Abstract

The machines in the industry could be generally classified based on axial and radial field distribution in the airgap. Axial field machines has unique advantages compared to radial gap machines of which slim and short axial length in addition to high power denisty. The axial machines were considered to be the earliest machines however later they were replaced by radial machines. Nowadays the evolution of the axial flux machines was grown enormously due to the urgent needs for a slim compact high power density drive motors that are crucial in many applications like electric cars, robotics, electric bicycles, traction, etc., the axial field machines is an attractive solution for this issue. There are many construction topologies for these machines that are under constant development, the machine could be DC, synchronous multiphase, brushed, brushless, with iron core, coreless with printed stator or printed disc rotor. The presented machine is an axial flux permanent magnet brushed commutated printed circuit rotor DC motor (PCBDCM), it is considered from the family of axial machines. The first objective of the thesis is to study the dynamic performance of this type of motor, this was done by constructing a block diagram of this motor system as well as performing state space modeling, where the simulation program was MATLAB/SIMULINK. There are two presented printed DC motors with different parameters under study the first one is 0.534 KW and the second is 1KW. A comparative study was performed on the two PCB motors and a 3.08KW conventional DC servo motor firstly in open loop then in closed loop using a proportional integral derivative (PID) as a controller.