شبیه سازی موتور پله (STEP MOTOR)

شبیه سازی موتور پلهSTEP MOTORارائه ی یک فایل 57 صفحه ای فایل های شبیه سازی و PDF

Chopper-Fed DC Motor Drive (Continuous)

Circuit Description 
The DC motor is fed by the DC source through a chopper which consists of GTO thyristor and free-wheeling diode D1. The motor drives a mechanical load characterized by inertia J, friction coeficient B, and load torque TL. 
The hysteresis current controller compares the sensed current with the reference and generates the trigger signal for the GTO thyristor to force the motor current to follow the reference. The speed control loop uses a proportional-integral controller which produces the reference for the current loop. Current and Voltage Measurement blocks provide signals for visualization purpose. Demonstration 
Motor starting 
Start the simulation. Observe the motor current, voltage, and speed during the starting on the scope. At the end of the simulation time (1.5 s), the system has reached its steady-state. 
Response to a change in reference speed and load torque 
The initial conditions state vector 'xInitial' to start with wm = 120 rad/s and TL = 5 N.m has been saved in the 'power_dcdrive_init.mat' file. This file is automatically loaded in your workspace when you start the simulation (see Model Properties). In order to use these initial conditions you have to enable them. Check the Simulation/Configuration Parameters menu , then select "Data Import/Export" and check "Initial state". 
Now, double click the two Manual Switch blocks to switch from the constant "Ref. Speed (rad/s) " and "Torque (N.m)" blocks to the Step blocks. (Reference speed wref changed from 120 to 160 rad/s at t = 0.4 s and load torque changed from 5 to 25 N.m at t= 1.2s). Restart the simulation and observe the drive response to successive changes in speed reference and load torque.