Double-duty ratio pulse width modulation signal low-power consumption high-speed bidirectional electromagnet drive circuit and use method thereof

Abstract

The invention relates to a double-duty ratio pulse width modulation signal low-power consumption high-speed bidirectional electromagnet drive circuit and a use method thereof. The circuit comprises atriangular wave generation circuit, a first double-voltage signal generation circuit, a second double-voltage signal generation circuit, a PWM signal modulator circuit and a power amplifier stage. With the drive circuit, when an electromagnet works at an attraction phase, high voltage is output under a 10% duty ratio pulse width modulation signal; when the electromagnet finishes motion and entersan attraction holding phase, high voltage is held under low power consumption in a low duty ratio; when the electromagnet works at a reset phase, high voltage is output under a 100% duty ratio pulse width modulation signal; and when the electromagnet finishes reset and enters a reset holding phase, high voltage is held under low power consumption in a low duty ratio. The drive circuit adopts large current starting and low current holding, shortens attraction and reset time of the bidirectional electromagnet, reduces attraction and reset holding power consumption, and improves the dynamic andstable state performance of the bidirectional electromagnet.

Description

technical field [0001] The invention belongs to the field of electronic technology, and specifically refers to a low-power-consumption high-speed bidirectional electromagnet drive circuit with a dual-duty ratio pulse width modulation signal and a method for using the same. Background technique [0002] High-speed electromagnets have been widely used in many high-end fields such as aerospace, diesel engine fuel injection systems, wheel anti-lock braking systems, automobile shock absorbers, national defense and military industry, deep-sea exploration, etc., and their dynamic and steady-state performance directly affects the performance of the entire system. control performance. The driving circuit can improve the dynamic and steady-state performance of the electromagnet to a large extent, but the more commonly used method is to use dual power supplies (one high voltage, the other low voltage) to automatically switch the circuit, and use high voltage during the electromagnet op...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the driving circuit of the electromagnet needs to switch between multiple different power supplies or power amplifier circuits, which requires high real-time switching and complicated circuit design.

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