汽车电控执行器的充能释能过程与驱动器的电路设计  

Energy charging and discharging process and the drive circuits design of automotive EC actuators

作　　者：李建秋[1] 王金力[1] 宋子由[1] 徐梁飞[1] 杨福源[1] 欧阳明高[1] 

机构地区：[1]清华大学汽车安全与节能国家重点实验室,北京100084

出　　处：《汽车安全与节能学报》2013年第1期41-47,共7页Journal of Automotive Safety and Energy

基　　金：国家自然科学基金资助项目(51275264);科技部国际合作项目(2012DFA81190)

摘　　要：柴油机高压共轨系统的喷射控制电磁阀直接影响多次喷射的性能。因输入/输出或者网络传输等原因,造成时间延迟,因而严重影响汽车电子控制系统的响应性和稳定性。为了缩短执行器驱动响应时间,本文分析了典型高速强力执行器的充能和释能过程;并给出了释能功率的粗略估计公式。设计了一种高压驱动电路。在该电路中,为执行器在工作工程的各个阶段,配置不同的续流回路。结果表明:该电路明显地缩短了执行器的充能和储能过程:将高压共轨系统的喷油器电流上升和下降的响应时间由原来的500～1000μs,缩短到100～300μs;从而,加快了控制系统的实时性和灵活性。The injector solenoid valve of a diesel common rail system determines the performance of multi- injections. Time delays caused by the inputs/outputs or the network communications strongly influence the responsibility and stability of automotive electronic control （EC） systems. This paper analyzes the energizing and dis-energizing processes of a typical high speed actuator, and presents an equation to estimate the energy release rate. A drive circuit with high voltage was designed, in which different freewheel circuits were disposed in different drive stages. The results show that the driver circuit with high voltages obviously shortens the energizing and release processes. The current response during the build-up and fall-down of the common-rail system injector-valve were shorten to 100-300 μs from original 500-1 000μs. Therefore, the circuit ensures the real-time performance and flexibility of the control system.

关 键 词：汽车电子控制(AEC)系统 执行器驱动电路 响应延迟 续流回路 

分 类 号：U463.6[机械工程—车辆工程]