A mathematics model which deals with 54 variables and 43 constraint conditions is proposed to optimize the product structure by using linear programming theory.
本文运用线性规划理论，建立了一个包括54个变量(产品)，43个约束条件产品结构优化数学模型。
The controlling principle of thyristor control linear reactor of TCR in the reactive power dynamic compensator of microcomputer was expounded, and establishment of its mathematics model was discussed.
阐述了微机无功动态补偿器中tcr晶闸管控制线性电抗器的控制原理，并对其数学模型的建立进行了讨论。
Finally, according to the knowledge of the motor, derives out the mathematics model of the linear motor. On this basis, designs the electromagnetic lifting system with PLC.
最后，根据电机学的知识，推导出了直线电机的数学模型，并在此基础上，设计了采用PLC控制的电磁举升系统的控制部分。
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