Method and system for dynamically adjusting PWM signal, and system for dynamically controlling high-power light

A system for dynamically adjusting a PWM signal, comprising:

• a signal detection module, which is configured to preset a standard signal period of a PWM signal and a standard duty ratio of an effective pulse in the standard signal period, receive a target duty ratio entered by a user, and compare the target duty ratio with the standard duty ratio to generate a comparison result;
• a constant effective pulse width modulation module, which is configured to adjust a duration of a signal period relative to the standard signal period while keeping a duration of the effective pulse in the standard signal period preset by the signal detection module unchanged to cause a duty ratio of the effective pulse to reach the target duty ratio from the standard duty ratio, and generate a corrected PWM signal according to the adjusted duration of the signal period and the target duty ratio, wherein the target duty ratio of the effective pulse is smaller than the standard duty ratio based on the comparison result generated by the signal detection module;
• and
• a constant cycle pulse width modulation module, which is configured to adjust a duration of the effective pulse in the standard signal period while keeping a duration of the standard signal period preset by the signal detection module unchanged to cause the duty ratio of the effective pulse to reach the target duty ratio from the standard duty ratio, and generate a corrected PWM signal according to the duration of the standard signal period and the target duty ratio, wherein the target duty ratio of the effective pulse is larger than the standard duty ratio based on the comparison result generated by the signal detection module,
• wherein the constant effective pulse width modulation module or the constant cycle pulse width modulation module is further configured to generate a corrected PWM signal according to the standard duty ratio and the duration of the standard signal period, wherein the target duty ratio of the effective pulse is equal to the standard duty ratio based on the comparison result generated by the signal detection module.