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摘要: 基于道路基础设施而实现的车道追踪控制技术是当今智能公路领域的核心研究内容之一。2 0 0 1年6月研制的车道追踪控制器在交通部公路科学研究所公路交通综合试验场90 0 m的智能公路测试跑道上实现了车道自动追踪的控制任务, 并且控制结果达到并超过ISO/TC2 0 4 WG1 4标准化草案NP1 7361 LDWS对车道偏离预警系统的要求。分析了该控制器的结构, 推导了该控制器的解析表达式, 给出了该控制器的参数, 并对实验结果进行了分析Abstract: Lane following, based on basic road facilities, is one of the core research items in the field of intelligent highway system (IHS).In June 2001, the controller designed by authors finished the task of lane following on IHS testing course, and the testing result had reached/surpassed the requirement of NP17361 Lane Departure Warning System made by ISO/TC204 WGI4.This paper described the controller architecture, deduced its analytic formula, given its parameters, drawn the control error curves and analyzed the testing results.
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Key words:
- intelligent highway system (IHS) /
- lane following /
- controller /
- algorithm
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表 1 T (E, X) 语言变量E模糊子集隶属度
Table 1. T (E, X) fuzzy membership table for variableE
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 NB 1.0 0.8 0.4 0.1 0 0 0 0 0 0 0 0 0 NM 0.2 0.7 1.0 0.7 0.2 0 0 0 0 0 0 0 0 NS 0 0 0.2 0.6 1.0 0.8 0.2 0 0 0 0 0 0 ZO 0 0 0 0 0.1 0.6 1.0 0.6 0.1 0 0 0 0 PS 0 0 0 0 0 0 0.2 0.8 1.0 0.6 0.3 0 0 PM 0 0 0 0 0 0 0 0 0.2 0.7 1.0 0.7 0.2 PB 0 0 0 0 0 0 0 0 0 0.1 0.4 0.8 1.0 表 2 T (EC, Y) 误差变化率语言变量EC模糊子集隶属度
Table 2. T (EC, Y) fuzzy membership table for variableEC
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 NB 1.0 0.8 0.4 0.1 0 0 0 0 0 0 0 0 0 NM 0.2 0.7 1.0 0.7 0.2 0 0 0 0 0 0 0 0 NS 0 0 0.2 0.7 1.0 0.8 0.1 0 0 0 0 0 0 ZO 0 0 0 0 0 0.5 1.0 0.5 0 0 0 0 0 PS 0 0 0 0 0 0 0.1 0.8 1.0 0.7 0.2 0 0 PM 0 0 0 0 0 0 0 0 0.2 0.7 1.0 0.7 0.2 PB 0 0 0 0 0 0 0 0 0 0.1 0.4 0.8 1.0 表 3 T (U, Z) 控制量语言变量U模糊子集隶属度
Table 3. T (U, Z) fuzzy membership table for variableU
-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 NB 1.0 0.8 0.4 0.1 0 0 0 0 0 0 0 0 0 0 0 NM 0 0.2 0.7 1.0 0.7 0.2 0 0 0 0 0 0 0 0 0 NS 0 0 0 0.1 0.4 0.8 1.0 0.8 0.4 0.1 0 0 0 0 0 ZO 0 0 0 0 0 0 0.5 1.0 0.5 0 0 0 0 0 0 PS 0 0 0 0 0 0 0.4 0.8 1.0 0.8 0.4 0.1 0 0 0 PM 0 0 0 0 0 0 0 0 0 0.2 0.7 1.0 0.7 0.2 0 PB 0 0 0 0 0 0 0 0 0 0 0 0.1 0.4 0.8 1.0 表 4 T (E, EC, U) 控制规则
Table 4. T (E, EC, U) control rules
E, U, EU NB NM NS ZO PS PM PB NB PB PB PM PM PS ZO ZO NM PB PB PM PM PS ZO ZO NS PB PB PM PS ZO NM NM ZO PB PB PM ZO NM NB NB PS PM PM ZO NS NM NB NB PM ZO ZO NS NM NM NB NB PB ZO ZO NS NM NM NB NB 表 5 T′ (E, EC, U) 模糊控制查询
Table 5. T′ (E, EC, U) Query table for fuzzy control
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 -6 7 7 7 7 4 4 4 2 1 0 0 0 0 -5 6 6 6 6 4 4 4 2 2 0 0 0 0 -4 7 6 7 7 4 4 4 2 1 0 0 0 0 -3 6 6 6 6 5 5 5 2 2 0 -2 -2 -2 -2 7 6 7 6 4 4 1 0 0 -3 -4 -4 -4 -1 7 6 7 6 4 4 1 0 -3 -3 -4 -4 -4 0 7 6 7 6 4 1 0 -1 -4 -6 -7 -6 -7 1 4 4 4 3 1 0 -1 -4 -4 -6 -7 -6 -7 2 4 4 4 2 0 0 -1 -4 -4 -6 -7 -6 -7 3 2 2 2 0 0 0 -1 -3 -3 -6 -6 -6 -6 4 0 0 0 -1 -1 -3 -4 -4 -4 -6 -7 -6 -7 5 0 0 0 -1 -1 -2 -4 -4 -4 -6 -6 -6 -6 6 0 0 0 -1 -1 -1 -4 -4 -4 -6 -7 -7 -7 -
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