通过分析产生电流越限和电缆故障的各种原因，画出报警设计的逻辑图。
It shows the logic diagram of alarm design by analyzing reasons of current spillage and cable malfunction.
对系统总体设计方案进行了研究分析，硬件设计中详细介绍了控制回路的电流检测模块、电机转速和位置检测模块、PWM输出和故障输入电路。
The overall design scheme is researched. The hardware of current detection module, motor speed and location detection module and PWM output and fault input module is introduced in detail.
介绍了用示波器检查初级电流和次级电压波形，通过波形分析诊断出点火线圈的故障。
Through the analysis of the wave of primary current and sub-voltage detected by oscillograph, the malfunction of ignition coil will be diagnosed.
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