自动化仪表
自動化儀錶
자동화의표
PROCESS AUTOMATION INSTRUMENTATION
2014年
4期
91-94
,共4页
汤富强%麻友良%杨超群%陈佑斌
湯富彊%痳友良%楊超群%陳祐斌
탕부강%마우량%양초군%진우빈
电子控制器(ECU)%单片机%动态模拟%故障检测%信号模拟
電子控製器(ECU)%單片機%動態模擬%故障檢測%信號模擬
전자공제기(ECU)%단편궤%동태모의%고장검측%신호모의
Electronic control unit(ECU)%Single chip machine%Dynamic simulation%Fault detection%Signal simulation
发动机电子控制器( ECU)输入信号的模拟是离线状态下实现发动机ECU动态故障检测的关键。分析了ECU各传感器信号的形式与特点,研发了能模拟发动机不同工况和各种状态的传感器信号。采用单片机、电位计等构建硬件,采用汇编语言进行软件编程,实现各传感器信号模拟。同时,信号的波形、频率、幅值可选可变,以满足不同类型发动机ECU在各种模拟工况下的故障检测需要。实践证明,采用本信号模拟方法进行ECU检测试验,能够准确、快捷地诊断ECU有无故障。
髮動機電子控製器( ECU)輸入信號的模擬是離線狀態下實現髮動機ECU動態故障檢測的關鍵。分析瞭ECU各傳感器信號的形式與特點,研髮瞭能模擬髮動機不同工況和各種狀態的傳感器信號。採用單片機、電位計等構建硬件,採用彙編語言進行軟件編程,實現各傳感器信號模擬。同時,信號的波形、頻率、幅值可選可變,以滿足不同類型髮動機ECU在各種模擬工況下的故障檢測需要。實踐證明,採用本信號模擬方法進行ECU檢測試驗,能夠準確、快捷地診斷ECU有無故障。
발동궤전자공제기( ECU)수입신호적모의시리선상태하실현발동궤ECU동태고장검측적관건。분석료ECU각전감기신호적형식여특점,연발료능모의발동궤불동공황화각충상태적전감기신호。채용단편궤、전위계등구건경건,채용회편어언진행연건편정,실현각전감기신호모의。동시,신호적파형、빈솔、폭치가선가변,이만족불동류형발동궤ECU재각충모의공황하적고장검측수요。실천증명,채용본신호모의방법진행ECU검측시험,능구준학、쾌첩지진단ECU유무고장。
The simulation of input signal of engine ECU is the key to implement dynamic fault detection of engine ECU in off line status. The forms and features of signals of each sensor of ECU are analysed, and the sensor signals that can emulate various status and different working conditions of engine are researched and developed. With single chip machine and potentiometer as the hardware, and the assembly language for programming the software, signal simulation for each sensor is implemented. In addition, the waveform, frequency and amplitude of the signals can be selected and adjusted to satisfy the requirements of fault detection for different types of engine ECU under various simulation conditions. The practice verifies that the signal simulation method can precisely and rapidly diagnose if the ECU is failure or not.