Files
HendiControlFirmware/Control/brewpi/mass.py
T
jens 2d538f3384 - better parameter for water sim, fewer losses
- max power is 3500 W

git-svn-id: http://moon:8086/svn/projects/HendiControl@242 fda53097-d464-4ada-af97-ba876c37ca34
2019-04-15 20:59:20 +00:00

47 lines
1010 B
Python

import numpy as np
import json
from aplant import APlant
from math import sqrt
class Mass(APlant):
def __init__(self, params):
print(json.dumps({'Mass': params}, indent=4, sort_keys=True))
self.dt = params['dt']
self.alpha = 1.0
self.e = 0
self.x = 0
self.gain = 0.999
self.C = params['C']
self.M = params['M']
self.L = params['L']
self.Td = params['Td']
self.kn = params['kn']
self.theta_amb = params['theta_amb']
self.theta = 0
self.P = 0
if self.Td > 0:
self.alpha = self.dt/self.Td
def activate(self, enable):
pass
def process(self):
self.e = self.e*(1 - ((self.L*self.theta)*self.dt)/(self.M*self.C))
self.x = (1-self.alpha)*self.x + self.gain*self.alpha*self.P
self.e += self.x
self.theta = self.e/(self.M*self.C)
def setPower(self, power_w):
k = int(power_w / 100 +0.5)
self.P = k * 100
def getPower(self):
return self.P
def getTemperature(self):
return round(self.theta + self.theta_amb + self.kn*np.random.normal(0,1)/sqrt(12.0), 1)