How can I feed a time schedule to appliances while using AC voltage source?

Question

Sandy 2015-6-22

0
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https://ww2.mathworks.cn/matlabcentral/answers/224835-how-can-i-feed-a-time-schedule-to-appliances-while-using-ac-voltage-source

回答： Drew Davis 2015-6-23

Hi,

My goal is to find the total electricity consumption by each household appliance. Right now, I am trying to build a model of dish washer which needs a schedule to run water pump motor and drying coil=water heater coil.

I have tried following things.

1. signal builder which is helpful to create 0 and 1 at desired time but I found that electric switch with AC voltage supply does not accept the signal from ' signal builder'. switch only accepts physical signals. ( is there any way that we can convert the output of 'signal builder' which can be accepted by 'switch'?.

2. I have tried ' repeating sequence'( signal type: discrete) with ' PS constant delay' which helps to switch the AC source on and off but I am not getting how these functions can be used to feed following schedule: * stage1: water pump on for 15 min stage2: water heater on for 15 min stage3: water pump on for 15 min stage4: drying coil on for 15 min. ( drying coil and water heater coil is same)

is there any other tool in Simulink which is more appropriate to solve this kind of problem?