According to the structure invariance principle, a friction compensation controller is designed by choosing load pressure as the observed value.

基于结构不变性原理，以负载压力作为观测量，设计了摩擦力补偿控制器。

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While the load pressure fluctuation, the load torque fluctuation and the rotational speed fluctuation mainly affect the steady performance of the system.

负载压力波动、加载转矩和转速的波动，主要影响系统的稳态性能。

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Then the aerodynamic pressure field obtained from the analysis of unsteady aerodynamics was transformed to the form of load pressure field which is suitable to the analysis of structure dynamics.

把非定常气动分析给出的压力场，转化为结构动力分析中的载荷压力场形式。

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Information pours in from scoresof sensors that constantly read temperature, barometric pressure and load.

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The effects of depressurization on internal structures is not intuitively obvious to non-engineers, but a 20 foot wide by 20 foot high wall that sees a 1.2 psi rapid pressure decrease feels a load of about 70, 000 lbs of horizontal force.

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