zero-cross detection

A real-time current detection based on FBD ( Fryze-Buchholz-Dpenbrock) method is pre-sented to detect the harmonic, negative-sequent and zero-sequent currents in three-phase four-wire system, and the essential of the method is the projection transformation of reference voltage.

为了快速、有效地检测出三相四线制电力系统中的谐波、负序和零序电流，提出了一种基于FBD法的电流实时检测方法。

Performance Analysis of the Zero-Forcing Detection of Threaded Algebraic Space Time Code

纹状代数空时码的迫零检测性能分析

TSC trigger circuit was designed, including the zero-crossing detection circuit and thyristor trigger circuit. And contactor was combined with the thyristor switch used in TSC.

设计了TSC触发电路，其中包括过零检测电路与晶闸管触发电路，并将接触器与晶闸管组合成复合开关应用在电容器投切中。

Many of Google's moonshots-self driving cars, high-altitude wind turbines, and most recently ingestible nano-particles for early detection of cancer-started as zero million dollar problems.

谷歌许多“探月计划”都从这些起步为零的百万美元课题开始，比如无人驾驶汽车和高海拔风力发电机，以及最近用于检测早期癌症的可服用纳米技术微粒。

MCU get timing reference by zero-crossing detection. It compare the current speed feedback with the object feedback, and control the conduction phase and time using PWM mode to realize the stable speed-regulating of AC PG-motor.

单片机通过过零检测获取计时基准，比较当前转速反馈与目标反馈，采用脉宽调制PWM方式来控制三端双向可控硅开关器件的导通相位角及导通时间，实现交流PG电机的平稳调速。