Click the title to reach ACT-R publications on language processing. Not all of their publications are downloadable (unfortunately an interesting looking paper on parsing is amongst those unavailable) but those that are also provide ACT-R models in most cases:

ACT-R is an empirically based cognitive architecture developed originally by John Anderson at CMU. Interestingly, the entire ACT series is based on production systems with timing mechanisms and other structures.

from Kirt Undercoffer