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On a real robot you probably can't.
There is always delay in any sensor. Plus, there are random odometry errors and actuator errors. There will also be random timing variation in the arrival of various messages from independent sources.
Depending on how you implement your navigation algorithm, you may be able to minimize many of those random factors with a feedback control loop.
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On a real robot you probably can't. can't have exactly the same trajectory every time.
There is always delay in any sensor. Plus, there are random odometry errors and actuator errors. There will also be random timing variation in the arrival of various messages from independent sources.
Depending on how you implement your navigation algorithm, you may be able to minimize many of those random factors with a feedback control loop.
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