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Re: [Paparazzi-devel] battery energy consumed too fast in simulation.

From: Gautier Hattenberger
Subject: Re: [Paparazzi-devel] battery energy consumed too fast in simulation.
Date: Sun, 12 Jun 2016 22:37:37 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0


Are you talking about the fixed-wing sim ? The battery model doesn't use these parameters. If you enable the 'auto' battery mode in the simulation box, the bat level will decrease as a function of the throttle and a fixed gain... well, the comment (from 2005) speaks by himself:


Le 11/06/2016 20:51, hendrixgr . a écrit :
I am simulating some long flights i will do next month and i noticed something strange.
Although i have set the maximum current correctly and the simulated current draw is spot on (as measured with a watt meter) the reported mah consumption is way too much.
For 5 minutes at 8.5 Amps@ 32% throttle the energy reported was about 4Ah when it should be at about 0.7 Ah !!!
Something is wrong or i am doing something wrong....
Here is my relevant airframe file
<section name="BAT">
    <define name="VOLTAGE_ADC_A" value="0.009422237"/>
        <define name="VOLTAGE_ADC_B" value="0.0"/>
        <define name="VoltageOfAdc(adc)" value ="(VOLTAGE_ADC_A * adc + VOLTAGE_ADC_B)"/>
    <define name="MILLIAMP_AT_FULL_THROTTLE"        value="40000"/>
    <define name="BAT_CAPACITY"                value="18000."/>
    <define name="CATASTROPHIC_BAT_LEVEL"            value="10" unit="V"/>
    <define name="CRITIC_BAT_LEVEL"                value="12.8" unit="V"/>
    <define name="LOW_BAT_LEVEL"                value="13.5" unit="V"/>
    <define name="MAX_BAT_LEVEL"                value="16.8" unit="V"/>


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