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VSS Approach To DC Motor Drives.

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ABSTRACT

The Direct Current (DC) motor speed ( m ) or current (I) controls based on

Variable Structure System (VSS) is presented in this thesis. It deliberates about the

introduction the Sliding Mode method to produce a good dynamic and steady state

behavior of the DC motor drive. Switching function estimation mode which is based on

the control error of speed and armature current information is being discussed.

Furthermore, the external torque which is unmeasurable can be estimated by using the

information from current and speed. In additional, it also shows the comparison

Proportional Integral (PI) control and Sliding Mode Control (SMC). The simulation

result of the SMC show that system motion is as it was predicted from theoretician

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