共查询到20条相似文献,搜索用时 140 毫秒
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本设计主要以STC89C52单片机为控制核心,通过红外传感器利用红外探测法实现小车的自主寻迹避障功能,并且利用多路红外发射器和一体化红外接收头实现小车的红外遥控功能,使小车不但具备自主寻迹避障功能,也能够进行人工控制,使小车的功能得到进一步的完善。详细介绍该智能小车的控制模块、避障模块、寻迹模块、红外接收模块、电机驱动模块。给出各功能实现的程序设计流程图,并进行寻迹、避障、红外遥控及相关实验,通过实验发现基于STC89C52单片机的智能小车系统结构简单,性价比高,易于推广和移植,具有广阔的应用前景。 相似文献
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采用单片机STC12C5AS32最小系统作为小车的智能控制系统。通过红外发射接收探头检测到物体,通过机械手将物体拾起,然后再通过红外发射接收探头检测路面寻迹线,使小车逐一将物体按预定轨道放入库房内,并通过液晶显示来实现时间显示。系统共分为:单片机最小系统模块、舵机驱动模块、步进电机驱动模块、液晶显示模块、转向模块、声音模块来实现智能小车的控制。 相似文献
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本文以MC9S12XS128的16位单片机为硬件控制系统,给出了一种智能小车的硬件系统设计方案,包括路径检测传感器的电路及布局、速度检测传感器的设计、MCU控制模块的设计、驱动模块的设计、电源模块的设计、显示模块的设计。实验表明,寻迹小车能够较快速、平稳地完成对各种曲度引导线的寻线行驶任务。 相似文献
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在车辆主动避撞技术中,路径跟随是一项必不可少的技术.以TMS320F28335 DSP为核心控制模块,以多传感器系统为路径识别模块,搭建了10∶1的主动避撞智能小车模型.通过获取实时路径信息和小车的状态信息得到前方道路的曲率.根据分段式控制方法,使小车能够自动根据路径的曲率调整预瞄距离和行驶速度.通过建立合适的预瞄跟随驾驶员模型,使小车能够跟随道路行驶.通过PWM波驱动舵机和电机,以及PID控制,实验结果表明,小车能够按照规划的路径稳定行驶,且跟随误差小.这证明所建立的预瞄跟随驾驶员模型是正确的,且能实现路径跟随的功能. 相似文献
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智能作为未来发展的代名词,已经深入到各个领域。在此研究探讨的智能小车是基于单片机控制运行的,可以很好实现小车的寻迹、避障、转向、速度控制、无线通讯等功能。整体系统结构合理、可靠性能高、实用性强、外接功能强大,在一定程度体现小车的"智能"。 相似文献
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红外反射式传感器在自主式寻迹小车导航中的应用 总被引:31,自引:1,他引:31
本文介绍了利用红外反射式传感器实现小车自动寻迹导航的设计与实现。自动寻迹是基于自动导引小车(AGV—auto guidedvehicle)机器人系统 ,用以实现小车自动识别路线 ,判断并自动规避障碍 ,以及选择正确的路线。实验中采用与地面颜色有较大差别的线条作引导 ,使用反射式红外传感器感知导引线和判断障碍物。系统控制核心采用AT89C2 0 5 1单片机 ,系统驱动采用控制方式为单向PWM的直流电机。该技术可以应用于无人驾驶机动车 ,无人工厂、仓库、服务机器人等领域。 相似文献
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《中国新技术新产品》2021,(13)
在某些危险的情况下,人们不太适合去进行探测或救援等。为了使智能机器人在险境下能够自主地进行循迹,该文设计了基于Arduino Mega 2560的智能循迹探险小车。采用了模块化设计,使小车更加紧凑,即使在更加窄小的环境,对该小车来说也没有问题。该智能小车运用8路灰度传感器,来接受外界信号,使单片机进行程序运算后,运用PWM调速使小车能够前后左右平稳运行,该文使用循迹部分和精准控制部分相互配合共同控制小车进行循迹,使小车的循迹部分更加精准。 相似文献
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Yadong Luo 《Management International Review》2007,47(4):531-566
Abstract and Key Results
相似文献
▪ | This study separates joint venture control into private and collective control and examines how these two distinct types of control in IJVs are influenced by dyadic relations between cross-cultural partners. |
▪ | Private control involves unilateral actions taken by an individual party to maximize its own interests and gain, whereas collective control involves bilateral actions taken jointly to pursue collective gain. |
▪ | This study demonstrates that private and collective controls are neither exogenous nor predetermined but are instead shaped by mutual relationships between partners, together with transactional needs and environmental parameters. |
▪ | Our analysis shows that superior dyadic relations, such as resource complementarity, operational integration, objective conformity, and interparty attachment, restrain private control and associated opportunism while enhancing collective control and associated cooperation. |
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综述国内外大型空分设备的自动变负荷及优化控制技术的发展状况,分析自动变负荷及优化控制技术的难点,结合国内首套国产空分装置的自动变负荷及优化控制应用情况,对空分设备自动变负荷及优化控制的系统结构和操作流程等进行了较全面的阐述。 相似文献
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Abstract The paper describes the design of single‐loop fuzzy supervisory predictive PID controllers for a plastics extruder barrel. A fuzzy supervisory shell is proposed to improve the set‐point tracking performance of the proposed PID method by appropriate adjustment of the weighting term for the control effort. Experimental results show that the proposed method is capable of giving a good result on the barrel. 相似文献
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对生产过程中的成品进行计数和分组控制常常是十分重要的。讨论对吸管包装机生产的吸管进行计数和分组控制的一些问题,如光电转换、信号处理、加法和减法计数、出料方向控制等。它不仅适用于吸管的生产,其结构和原理还可广泛用于其它产品的生产包装过程的相应控制。 相似文献
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Although Cruise Control (CC) is available for most cars, no studies have been found which examine how this automation system influences driving behaviour. However, a relatively large number of studies have examined Adaptive Cruise Control (ACC) which compared to CC includes also a distance control. Besides positive effects with regard to a better compliance to speed limits, there are also indications of smaller distances to lead vehicles and slower responses in situations that require immediate braking. Similar effects can be expected for CC as this system takes over longitudinal control as well. To test this hypothesis, a simulator study was conducted at the German Aerospace Center (DLR). Twenty-two participants drove different routes (highway and motorway) under three different conditions (assisted by ACC, CC and manual driving without any system). Different driving scenarios were examined including a secondary task condition. On the one hand, both systems lead to lower maximum velocities and less speed limit violations. There was no indication that drivers shift more of their attention towards secondary tasks when driving with CC or ACC. However, there were delayed driver reactions in critical situations, e.g., in a narrow curve or a fog bank. These results give rise to some caution regarding the safety effects of these systems, especially if in the future their range of functionality (e.g., ACC Stop-and-Go) is further increased. 相似文献
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