共查询到18条相似文献,搜索用时 428 毫秒
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【】触觉和滑觉感知功能是仿生假手不可或缺的感知功能。本文在原有智能假肢的基础上,通过对触滑觉感知方法的研究,包括触滑觉传感器的选型、后续测量电路的设计和测点布局分析等,开发了一种可以同时实现触觉和滑觉感知的智能假肢。进而,通过模糊逻辑控制方法的引入,实现了假肢的可靠抓握功能及抓握保持过程中的自适应响应控制。实验结果表明,该智能假肢可以实现假肢抓握的稳定控制,并在被抓握物体产生滑动时进行精准快速的自适应响应控制。 相似文献
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提出了一种用于智能机器人仿生皮肤的电容式滑觉传感器,用以解决智能机器人软抓取过程中滑觉信息的感知问题.阐述了电容式滑觉传感器的结构设计、滑觉感知机理,并借助ANSYS有限元仿真软件进行滑觉感知机理验证.基于CC2530低功耗微处理器与AD7147-1型电容数字转换器构建便携式电容滑觉信息感知系统.根据差分电容式滑觉传感器的输出可实现全方向性滑觉力检测功能.实验结果表明:该电容式滑觉传感器具有结构简单、设计合理、加工制作方便、成本低且高灵敏度等优点. 相似文献
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FPSR^TM系列传感器元是美国Interlink公司最新工艺制造的,对采用它所研制开发的压滑觉传感器进行了介绍,并阐述了其信号的检测方法。 相似文献
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一种全方向非接触式机器人滑觉传感器及其应用 总被引:1,自引:0,他引:1
本文介绍作者提出的一种以光强外调制型光纤传感器为基础的滑觉传感器。它是全方向、非接触式的并具有许多优于现有其它型式滑觉传感器的特性。文中还介绍了利用这种传感器构成的机器人软抓取控制系统及其实验结果。 相似文献
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HI—1三感觉机械手的研究 总被引:4,自引:2,他引:2
本文对机器人的接近觉、接触觉、滑觉进行了研究,设计并制作了能装于机械手爪上的小型组合传感器.传感器组成的系统在一简易的机械手上完成了抓鸡蛋、纸盒、玻璃瓶、铁块等多种操作. 相似文献
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通过对人体跌倒自动报警机制的研究,提出一种基于MEMS加速度传感器的侦测人体跌倒信号、自动通过手机短信报警,以及修正误报警的方法,并由低功耗MSP430F449单片机和MMA7260Q加速度传感器,以及GSM模块,通过AT指令程序,实现了单片机控制GSM模块自动发送跌倒求救短信息。它可以检测人体在倾斜、垂直方向的跌倒信号和跌倒时发出的撞击信号,能自动发送短信,还可以在指定时间内消除错误报警信号,具有报警准确性高的突出优点。通过姿态模拟漏报警和误报警实验,结果表明没有出现漏报警和误报警,证明该方法可行,具有应用价值。 相似文献
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This paper is devoted to present the latest results on the exploitation of the force/tactile sensor developed by the authors in terms of modeling and interpretation of the data provided by the device. An analytical nonlinear model of the elastically deformable sensor is derived and validated, which allows to reconstruct the position and orientation of the surface in contact with a rigid object on the basis of the sensor signals. The reconstruction is performed via an Extended Kalman Filter able to counteract the measurement noise and to handle the nonlinearity of the model at the same time. The contact plane position and orientation information together with the contact force vector measured by the sensor are used to estimate the physical parameter most relevant to manipulation control purposes: the friction coefficient. A slippage control algorithm is presented which exploits the estimated friction and a novel slipping detection algorithm is proposed to cope with the unavoidable uncertainties of the real world and its effectiveness is experimentally proved in comparison with the existing techniques. 相似文献
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目前汽车已装备电动转向器和电子稳定控制器以防止侧滑.汽车电动转向器和电子稳定控制器不但需要转向扭矩传感器,而且需要转向角度传感器.磁阻式(MR)转向传感器既可以检测转向扭矩,也可同时检测转向时的转向角.MR转向传感器由磁性敏感元件和信号盘组成.从MR转向传感器的输出信号可以得到转向扭矩和转向角的信息.最后给出了MR转向传感器的性能特性曲线. 相似文献
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Approximation-based adaptive control for a class of mobile robots with unknown skidding and slipping
Sung Jin Yoo 《International Journal of Control, Automation and Systems》2012,10(4):703-710
An adaptive tracking control approach using function approximation technique is proposed for trajectory tracking of Type (2,0) wheeled mobile robots with unknown skidding and slipping in polar coordinates and at the dynamic level. The nonlinear disturbance observer (NDO) is used to estimate a nonlinear disturbance term including unknown skidding and slipping. The adaptive control system is designed via the function approximation technique using neural networks employed to compensate the NDO error. It is proved that all signals of the controlled closed-loop system are uniformly bounded and the point tracking errors converge to an adjustable neighborhood of the origin regardless of large initial tracking errors and unknown skidding and slipping. Simulation results are presented to validate the good tracking performance and robustness of the proposed control system against unknown skidding and slipping. 相似文献
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Mingyue Cui Hongzhao Liu Wei Liu Yi Qin 《Journal of Intelligent and Robotic Systems》2018,92(3-4):489-504
A novel unified control approach is proposed to simultaneously solve tracking and obstacle avoidance problems of a wheeled mobile robot (WMR) with unknown wheeled slipping. The longitudinal and lateral slipping are processed as three time-varying parameters and an Adaptive Unscented Kalman Filter (AUKF) is designed to estimate the slipping parameters online More specifically, an adaptive adjustment of the noise covariances in the estimation process is implemented using a technique of covariance matching in the Unscented Kalman Filter (UKF) context. A stable unified controller is applied to simultaneously handle tracking and obstacle avoidance for this WMR system to compensate for the unknown slipping effect. Applying Lyapunov stability theory, it is proved that tracking errors of the closed-loop system are asymptotically convergent regardless of unknown slipping, the tracking errors converge to the zero outside the obstacle detection region and obstacle avoidance is guaranteed inside the obstacle detection region. The effectiveness and robustness of the proposed control method are validated through simulation and experimental results. 相似文献