The better technological process now is the stepcontrol of carbon potential during carburizing. It can be considered a multi stage carburation.
目前最佳渗碳工艺方法是在整个渗碳过程中对碳势进行台阶式控制，这一过程可以看成是一个多段渗碳过程。
2
Space vector pulse width modulation(SVPWM) and multi-step commutation method of bi-directional switches are the basic control strategies of the matrix converter.
空间矢量脉宽调制和双向开关多步换流方式是矩阵式变换器的基本控制策略。
3
WNN controller with the idea of neural networks inverse control is applied. Using multi-step predictive index function to train the weights of controller.