我试图用多台机器模拟一个制造过程。机器1的容积为1升。机器2的容积为2升。我们想生产2升化学品X,所以我们在机器1中加入1升原料。完成后,将1L移至机器2。同时,用第二批1L在机器1上运行另一轮。然后将其添加到已经填充了一半的机器2中。然后启动机器2,最终生产两升。如果机器1需要3小时,机器2需要12小时,则此过程将需要3+3+12=18小时
现在我的方法如下。我将Machine1创建为容量为1的资源,将Machine2创建为容量为2的资源。我希望在两批产品通过机器1后启动机器2。我的尝试代码如下:
import simpy
from collections import namedtuple
Chemical = namedtuple("Chemical", "name")
X_batch1 = Chemical("X_batch1")
X_batch2 = Chemical("X_batch2")
def do_process_1(env, machine1, Chemical):
print(f"Chemical {Chemical.name} requested Machine1 at {env.now}")
with machine1.request() as req:
yield req
print(f"Chemical {Chemical.name} got into Machine1 at {env.now}")
yield env.timeout(3)
print(f"Chemical {Chemical.name} got out of Machine1 at {env.now}")
# yield env.timeout(2)
def do_process_2(env, machine1, machine2, Chemicals):
# <some condition to check if process 1 is done for both Chemicals>
# make each batch for machine2, one after the other
print(f"{Chemicals[0]} asks for Machine2 at {env.now}.")
print(f"{Chemicals[1]} asks for Machine2 at {env.now}.")
with machine2.request() as req1, machine2.request() as req2:
yield req1 & req2
print(f"{Chemicals[0]} gets machine2 at {env.now}.")
print(f"{Chemicals[1]} gets Machine2 at {env.now}.")
yield env.timeout(12)
print(f"{Chemicals[0]} got out of machine2 at {env.now}.")
print(f"{Chemicals[1]} got out of machine2 at {env.now}.")
env = simpy.Environment()
machine1 = simpy.Resource(env, 1)
machine2 = simpy.Resource(env, 2)
env.process(do_process_1(env, machine1, X_batch1))
env.process(do_process_1(env, machine1, X_batch2))
env.process(do_process_2(env, machine2, machine1, (X_batch1, X_batch2)))
env.run(until=60)
我上面有两个路障:
任何帮助都将不胜感激
我用下面的代码解决了我自己的问题。简而言之,我将第一台机器的进程保存在一个变量中,并将该变量传递给第二台机器。然后我在第二台机器的过程中,用这个过程的产量
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