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To evaluate the software behavior of the electronic control unit (ECU) of automotive electrical parking brake (EPB), a software-in-the-loop (SiL) simulation system is built. The EPB is simulated by ARX (auto-regressive with auxiliary input) model, ARMAX (auto-regressive moving average with auxiliary input) model, and NNARMAX (neural network ARMAX) model. By system identification, the ARX(3,4,2), ARX(4,4,2), ARMAX(3,3,1,1), and ARMAX(4,4,3,2) models are derived. Validation results show that the four-order ARMAX model and the NNARMAX model better simulate the actuator of the EPB. 相似文献
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基于快速控制原型技术的压缩天然气直喷发动机控制 总被引:1,自引:1,他引:0
为提高压缩天然气发动机的性能,采用快速控制原型技术实现了压缩天然气发动机的缸内直接喷射.根据实际应用要求,测试了直喷喷嘴的流量特性,设计了压缩天然气直喷发动机燃气供给系统,制定了缸内直接喷射天然气的控制策略.结果表明:采用缸内直接喷射天然气的方式,压缩天然气发动机的输出扭矩可以达到同类汽油发动机的输出水平,当转速为2 500 r/min时,功率损失为0.006%,基本与汽油发动机相同. 相似文献
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