国防科技大学学报

引用本文:	刘楠,刘振明,童大鹏.压电喷油器执行器驱动控制电路改进设计.[J].国防科技大学学报,2024,46(6):219-226.[点击复制]
	LIU Nan,LIU Zhenming,TONG Dapeng.Improved design of piezoelectric injector actuator drive control circuit[J].Journal of National University of Defense Technology,2024,46(6):219-226[点击复制]

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压电喷油器执行器驱动控制电路改进设计

刘楠¹,刘振明²,童大鹏¹

(1. 海军士官学校机电系, 安徽蚌埠 233012;2.海军工程大学动力工程学院, 湖北武汉 430033)

摘要:

针对自行研制的压电喷油器和执行器,通过设计压电执行器两端电压补偿控制策略,采取六阶段电路驱动控制方法,实现了压电喷油器内部执行器两端驱动电压的闭环补偿控制和基于三角波形驱动电流的充放电过程,提高了电路能量利用率,降低了电路峰值电流。同时对驱动电路进行试验。试验表明,改进驱动控制方式后,电路充电时间缩短了0.06 ms,放电时间略微缩短了0.01 ms,满足执行器达到最大位移的最小脉宽缩短到0.3 ms,峰值电流降低了3 A,由此表明电路响应速度和安全性得到了进一步提高。

关键词: 压电喷油器执行器驱动电路驱动控制策略

DOI：10.11887/j.cn.202406024

投稿日期：2022-03-23

基金项目:国家自然科学基金资助项目(51879269)

Improved design of piezoelectric injector actuator drive control circuit

LIU Nan¹, LIU Zhenming², TONG Dapeng¹

(1. Mechanical and Electrical Department, Naval Noncommissioned Officer School, Bengbu 233012, China;2. College of Power Engineering, Naval University of Engineering, Wuhan 430033, China)

Abstract:

For the self-developed piezoelectric injector and actuator, a compensation control strategy based on voltage feedback was designed, a six-stage circuit driving mode was adopted, and the closed-loop compensation control of the driving voltage at both ends of the actuator inside the piezoelectric injector, charge and discharge process based on triangular waveform driving current were realized. It improved the utilization rate of circuit energy and reduced the peak current. At the same time, the drive circuit was tested. Test shows that the charging time is shortened by 0.06 ms, the discharge time is slightly shortened by 0.01 ms, the minimum pulse width for the actuator to reach the maximum displacement is shortened to 0.3 ms, and the peak current is reduced by 3 A, which verifies that the drive circuit has improved in response speed and safety.

Keywords: piezoelectric injector actuator drive circuit drive control strategy