I am getting an error when trying to train an RL agent in matlab, I am using MATLAB 2024a

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Mxolisi
Mxolisi 2024-10-8
回答： Sreeram 2024-11-15
I am trying to run the following example in Matlab:
openExample('rl/TrainTD3AgentForPMSMControlExample')
It gives me the following error:
Error using rl.internal.train.OffPolicyTrainer/run_internal_/nestedRunEpisode (line 284)
Error in 'mcb_pmsm_foc_sim_RL/Current Control/Input Scaling/ Calculate Position and Speed/Speed Measurement': Failed to evaluate mask initialization commands.
Error in rl.internal.train.OffPolicyTrainer/run_internal_ (line 351)
out = nestedRunEpisode(policy);
Error in rl.internal.train.OffPolicyTrainer/run_ (line 39)
result = run_internal_(this);
Error in rl.internal.train.Trainer/run (line 8)
result = run_(this);
Error in rl.internal.trainmgr.OnlineTrainingManager/run_ (line 123)
trainResult = run(trainer);
Error in rl.internal.trainmgr.TrainingManager/run (line 4)
result = run_(this);
Error in rl.agent.AbstractAgent/train (line 86)
trainingResult = run(tm);
Caused by:
Error using rl.env.internal.reportSimulinkSimError (line 29)
Cannot change property 'Enabled' of 'mcb_pmsm_foc_sim_RL/Current Control/Input Scaling/ Calculate Position and Speed/Speed Measurement' while simulation is running

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回答（1 个）

Sreeram
Sreeram 2024-11-15
Hi @Mxolisi,
This looks like a bug to me. However, here is a workaround to unblock this:
Replace “Speed Measurement” block in ‘mcb_pmsm_foc_sim_RL/Current Control/Input Scaling/ Calculate Position and Speed’ with “Speed Measurement” block from ‘Motor Control Blockset HDL Support/Sensor Decoders’.
Make sure to set all the block parameters to be exactly same as that of the original “Speed and Measurement” block before commenting it out.
I hope this helps!

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