正式演说
发表于 2025-3-23 13:34:39
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能够支付
发表于 2025-3-23 16:01:30
Auswahl des richtigen Lasersystems,transients. Stiff coupling between the different parts of the drive is assumed so that all partial masses may be lumped into one common inertia. The equations are written as state equations for the continuous state variables ., . involving energy storage; only mechanical transients are considered. A
Hdl348
发表于 2025-3-23 21:52:24
,Auswirkungen des neuen Regelungsgefüges,ntrolled electrical drive operating over a wide speed range is specified. This is due to their excellent operational properties and control characteristics; the only essential disadvantage is the mechanical commutator which restricts the power and speed of the motor, increases the inertia and the ax
大喘气
发表于 2025-3-23 23:39:36
,Fazit und abschließende Betrachtung,is discussion is now extended by considering the machine as part of a feedback control system. The reason for this is that in practice the choice of a DC drive is normally motivated by the possibility of operating over a wide speed range with low losses and matching the behaviour of the motor to the
食物
发表于 2025-3-24 02:55:57
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unstable-angina
发表于 2025-3-24 09:15:45
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Polydipsia
发表于 2025-3-24 12:49:59
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intercede
发表于 2025-3-24 16:06:32
Jürgen Fritzsche,Anna-Maria Fritzsches of adequate power, generating three-phase voltages of variable amplitude and frequency. This is necessary in order to maintain at all speeds a low rotor frequency, which is a precondition for acceptable overall efficiency of the drive. Inverters of this type are available today employing thyristor
Insensate
发表于 2025-3-24 21:37:45
Jürgen Fritzsche,Anna-Maria Fritzsche), Fig. 10.16, it is obvious that the latter represents a much more complex control plant. This is caused by the fact that the main flux and the armature current distribution of a DC machine are fixed in space and can be directly and independently controlled while with an AC machine these quantities
伙伴
发表于 2025-3-24 23:28:19
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