version_initial

faults/retry_delay.py

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+import salabim as sim
+import numpy as np
+from math import exp
+
+
+class RetryDelay(sim.Component):
+    """
+    This class represents the human operator retry delay type of fault.
+    Simulated RetryDelay faults only apply to BowlFeeders.
+    人为操作员重试延迟类型的故障。 模拟重试延迟故障
+    """
+    def __init__(self, module, debug=True):
+        super(RetryDelay, self).__init__()
+        self.debug = debug
+        self.t = 0
+        self.module = module
+
+    def process(self):
+        self.t = self.t + 1
+        # (poissrnd((exp(t/5)-1)/4) * 0.2 + 1)
+        # Note: The factor is zero-based so that it can be added as a separate delay.
+        delay_factor = np.random.poisson((exp(self.t/5)-1)/4) * 0.2 # 泊松分布
+        if self.debug:
+            print("FAULT: RETRY_DELAY: ", delay_factor)
+        yield self.add_delay(self.module.duration, delay_factor), 1
+
+    def add_delay(self, delay, delay_factor):
+        return delay * delay_factor
+
+    # def spawn(self):
+    #     return self.env.process(self.process())

faults/wear_and_tear.py

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+from math import exp
+import salabim as sim
+
+
+class WearAndTear(sim.Component):
+
+    def __init__(self, module, debug=True):
+        super(WearAndTear, self).__init__()
+        self.debug = debug
+        self.t = 0
+        self.module = module
+
+    def process(self):
+        # with self.request() as req:
+        #     yield req
+        # yield self.request()
+        self.t = self.t + 1
+        # ((exp(t / 5.0) - 1) / 30 + 1)
+        # Note: The factor is zero-based so that it can be added as a separate delay.
+        delay_factor = (exp(self.t / 5.0) - 1) / 30
+        extra_delay = delay_factor * self.module.duration
+        if self.debug:
+            print("FAULT: WEAR_AND_TEAR ", extra_delay)
+        yield self.hold(extra_delay)
+        return
+
+    def spawn(self):
+        return self.process()
+
+
+# wear_and_tear = sim.Resource("wear_and_tear",10)