The torque calculation method for a planetary gear in Simscape (심스케이프의 planetary gear 토크 계산법)
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In the planetary gear system with a gear ratio (NR/NS) set to 2 for Simscape, and following the equation Tr + Ts = Tc.
values were assigned to Tr and Ts.
When Tr is given twice the value of Ts, Tc comes out as Ts + Tr as expected.
The issue arises when Tr is not given twice the value of Ts.
In fact, Tc shows a value greater than Ts + Tr.
For example, while Ts(300) + Tr(600) = Tc(900) holds true, Ts(300) + Tr(500) = Tc(750) is observed.
- 1. Why does doubling Tr with 2Ts result in the correct value, and not doing so leads to an increase in the value?
- 2. Moreover, where does the value of 50 come from among the added values?
(Inertia of 10kg*m^2 is assigned to inertia2,4. In the planetary gear, inertia is in the 'off' state.)
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Accepted Answer
Jongil Lee
on 16 Aug 2023
안녕하세요
Simulation Initialization에서 initial value를 확인해 보시기 바랍니다. 에너지 평형을 찾는 과정에서 파라미터의 우선순위에 따라서 솔버가 찾은 해를 확인해 보실 수 있으며 필요에 따라 파라미터의 우선순위를 조정하여 해를 안정화 하거나 목표값을 달리할 수 있습니다. 참고하시기 바랍니다.
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Jongil Lee
on 24 Aug 2023
안녕하세요
Planetary gear는 조합에 따라 다양한 형태의 기능을 보여줍니다. 다양한 조합이 가능하지만, 한가지 예를 들어보면, Carrier - 고정 / Ring Gear - 입력 / Sun Gear - 출력 으로 하면 기어에 맞는 결과를 얻을 수 있습니다.
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