Robot foreign matter cleaning laser constant-current driving circuit based on switching power supply design

Abstract

The invention provides a robot foreign matter cleaning laser constant-current driving circuit based on switching power supply design, and belongs to the technical field of outdoor mobile robot high-altitude or long-distance foreign matter cleaning. The driving circuit comprises a switching power supply circuit, a five-order Butterworth low-pass filter circuit, an acquisition resistor PI current feedback circuit, a given quantity PWM voltage regulation circuit, a soft start control circuit, a PWM filter circuit, a leakage inductance filter circuit and a high-frequency filter circuit. A constant current feedback circuit enables the current of the whole loop to be constant and stable, a constant voltage circuit enables the power supply voltage of the circuit to be constant, the soft start circuit enables the circuit to be started slowly and reduces the current overshoot, the Butterworth filter circuit enables the circuit to be started slowly and reduces the wave and the voltage of the circuit to be stable, the leakage inductance circuit reduces the spike pulse, and the PWM filter circuit eliminates the post-stage self-excited oscillation. And the high-frequency filter circuit filters high-frequency components in the line.

Description

technical field [0001] The invention relates to the technical field of high-altitude or long-distance foreign matter cleaning by an outdoor mobile robot, in particular to a constant current drive circuit for a robot foreign matter cleaning laser based on a switching power supply design. Background technique [0002] With the development and progress of science and technology and the improvement of people's living standards, the external environment is sometimes affected by floating garbage in the air and places where flying objects are prohibited from operating in some important places. Affected by these external environments, a simple and portable laser driver is needed The circuit sends out pulses to clean away foreign objects and flying objects in the high altitude or places that cannot be reached by people at a long distance. [0003] There are two driving methods for lasers on the market today, one is driven by a constant voltage source, and the other is driven by a con...

AI Technical Summary

Problems solved by technology

[0004] Most of the laser drive circuits on the market use linear constant current sources and high-power digital switching power supplies. The design of linear power supplies is complex, the energy conversion efficiency is low, the power consumption is large, external heat dissipation is required, and the control feedback is slow; the design of high-power digital switching power supplies is also very complicated. , high cost, large noise generated by switching power supply, unstable ripple coefficient control and other factors

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