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監(jiān)督控制下的車輛集成底盤控制策略與仿真
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Framework for Integrated Vehicle Chassis Control and Its Simulation
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    摘要:

    分析了輪胎側(cè)偏角與操縱穩(wěn)定性的關(guān)系,提出根據(jù)前、后輪胎側(cè)偏角及其角速度 來定義判斷車輛穩(wěn)定性的因子。采用層次化的模糊邏輯監(jiān)督控制協(xié)調(diào)各相對獨立的子功能控 制器,以實現(xiàn)主動轉(zhuǎn)向、主動驅(qū)動/制動的集成控制。下層的各子功能控制器根據(jù)上層監(jiān)督 控制分配的權(quán)重,實現(xiàn)各自的橫擺角速度跟蹤或者穩(wěn)定性控制目標。通過仿真研究了這種層 次化集成控制策略和算法在極限工況下的性能。結(jié)果表明,相比傳統(tǒng)的一些獨立或聯(lián)合的底 盤控制方法,該集成控制避免了控制器間的沖突,在極限工況下能更好地實現(xiàn)車輛狀態(tài)跟蹤 和穩(wěn)定操縱,并可減小控制能量消耗。

    Abstract:

    The vehicle stability characteristic was represented by coupling of state variables, the front or rear tyre side slip angle and its angular velocity. To improve the maneuverability and stability of vehicle, a fuzzy supervisory control based on integrated control algorithm was implemented to coordinate the subsystems of the vehicle chassis control system. According to the control weights assigned by the upper supervisory controller, the subsystems including active steering control, active driveline control and active brake control were proposed to achieve their performance targets independently. An 8-degree-of-freedom nonlinear vehicle model was used in simulation to verify the integrated algorithm through critical test maneuvers. Simulation results confirm that, compared with the conventional stand-alone or combined controllers, the proposed hierarchical control algorithm provides vehicle with better performance of maneuverability and stability, while avoiding conflicts among the subsystems and decreasing consumption of the control.

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王金湘,陳南.監(jiān)督控制下的車輛集成底盤控制策略與仿真[J].農(nóng)業(yè)機械學報,2009,40(9):1-6. Framework for Integrated Vehicle Chassis Control and Its Simulation[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(9):1-6.

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