MATLAB SIMEVENTS RELEASE NOTES Guía de usuario descargar pdf (Pagina 63)

Build a Hybrid Model

2-41

• Between 6s and 8s, the measured slip increases and the wheel speed begins to lock up

(decrease rapidly towards zero).

• At about 14s, the measured slip increases again. The wheel speed locks up, falling to

zero.

• The vehicle takes almost 17s to come to rest. This value is almost 2s longer than in

the original time-based model.

Change the Network Performance

One way to experiment with the simulation is to change the performance of the network

and run the simulation again. Try making either of the following sets of changes.

Observe the changes in results.

• In the Event-Based Random Number block, set Maximum to 0.1. This change

increases the maximum service time of the N-Server block, representing an increase

in the latency of the network. Rerun the simulation. The increased latency further

degrades the braking performance.

• In the Time-Based Entity Generator block, restore the original values. Set

Distribution to Uniform, Minimum to 0.01, and Maximum to 0.06. Also in the

Time-Based Entity Generator block, set Intergeneration time from dialog

to 0.01. The last change increases the frequency of entity generation. The increased

entity generation means that the incoming control signal is sampled more regularly,

increasing the fidelity of the network. Rerun the simulation. The increased network

fidelity improves the braking performance.

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MATLAB SIMEVENTS RELEASE NOTES Guía de usuario Pagina 63