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Drive current detection device, drive current detection method, failure detection device, and failure detection method for PWM load equipment
Drive current detection device, drive current detection method, failure detection device, and failure detection method for PWM load equipment
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机译:PWM负载设备的驱动电流检测装置,驱动电流检测方法,故障检测装置以及故障检测方法
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摘要
When detecting a failure of a PWM load device, it is possible to correctly detect a load device failure even when a load device whose duty ratio of the PWM waveform has changed or when a load device with a different drive current is connected. A failure detection device and a failure detection method are provided. The failure detection apparatus according to the present invention samples the current flowing through the PWM load device at a predetermined cycle, determines a current drive section based on the sampled sample value, and uses the sample value in the current drive section to detect a failure. A drive current value for determining the presence or absence of is determined.
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