基于GPS的同步相量测量单元（PMU）是一种新型的高精度测量装置，能够测量母线电压相量和支路电流相量。
Phasor measurement unit(PMU)based on GPS is a new and precise measuring device, which can be used to measure bus voltage phasor and branch current phasor.
执行单元的整个机械运动m由各条支路形成的多项式链的总电荷得到。
The whole mechanical movement m of the actuator is obtained from the sum of charges of the polynomial chain formed by the branches.
此外，由R1和C1构成的支路代表压电执行单元的理想电荷关系，而其它支路代表实际执行单元的材料特性。
Furthermore, the branch encompassing R1 and C1 represents the ideal charging behavior of the piezo actuator while the other branches represent the material properties of the actual actuator.
此外，由R1和C1构成的支路代表压电执行单元的理想电荷关系，而其它支路代表实际执行单元的材料特性。
Furthermore, the branch encompassing R1 and C1 represents the ideal charging behavior of the piezo actuator while the other branches represent the material properties of the actual actuator.
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