喷油器测控系统喷油量温度控制设计  

Design of Fuel Injection Temperature Control System for Injector Measurement

作　　者：汤安东 魏列江[1] 许仰曾[2] 

机构地区：[1]兰州理工大学能源与动力学院,甘肃兰州730000 [2]上海豪高机电科技有限公司,上海200000

出　　处：《电子科技》2017年第10期63-65,共3页Electronic Science and Technology

摘　　要：针对喷油器测控系统中对喷油量的温度控制要求超调量少、调节时间短且精度约为2°的要求。所以对温度采用闭环控制负反馈控制的方法,将目标量与实际反馈量做PID算法处理,输出不同占空比的PWM脉冲,调节加热器的通电时间。设计了飞思卡尔16位单片机温度控制器,主要搭建了温度硬件采集电路和PWM输出驱动固态继电器电路以及软件调试界面,同时在不同时间段多工况下测试温度控制的品质,基本达到系统对温度控制的应用要求。The fuel injector measurement and control system require less overshoot,short adjusting time and precision at about 2 °,when control the temperature of the fuel injection. So,the system take a negative feedback closed-loop control based on temperature. The control system do PID algorithm between the target amount and the actual feedback,and output of different duty cycle of the PWM pulse,adjusting the heating time of the heater. The design of the Freescale 16 bit micro-computer is as temperature controller. It forms the temperature hardware acquisition circuit and PWM output driven solid-state relay circuit and software debugging interface,while it can test the quality of temperature control under the a variety of jobs conditions in different time periods. And the application requirements for temperature control can be satisfied basically.

关 键 词：单片机 温度采集 PWM驱动 闭环负反馈 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置] TK311[自动化与计算机技术—控制科学与工程]