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链驱动机器人的真实世界触觉传递率分析
Recently, a real-world haptics which transmits a haptic sensation in real-world has been actively researched. Conventional research of real-world haptics often used low-degree of freedom system. However to transmit human-like haptic information, multi-degrees of freedom robot should be used. On the other hand, general hand robot as multi-degrees of freedom robot often used force sensor. The force sensor can not get the force information which is applied from other points. Therefore, in this research, bilateral control is applied to chain-driven hand robot. Bilateral control based on disturbance observer and reaction force observer can obtain all force information which is applied to robot. The chain-driven robot has some friction and backlash because of chain and gear. These causes of degradation haptic transmission. Thus, in this research, haptic sensation is transmitted by chained driven hand robot. Then, it is analyzed how haptic information the chain-driven robot transits by using transmissibility. Transmissibility is calculated by experiment.
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任务规划进行过程中人机接口控制器的可用性
Unmanned ground and air vehicles (UGVs and UAVs) embody a critical capability of future U.S. Army systems and will be used for force projection and as force multipliers. They are expected to operate in a semiautonomous fashion, in which an operator will lay out a mission plan for the vehicle to execute with little or no operator interaction; the operator s function will be to monitor the progress of the unmanned systems. If the situational demands exceed the capabilities of the vehicle, the operator will need to intervene to complete the mission by either changing the mission plan or by assuming direct control of the vehicle by teleoperation until the vehicle can resume semiautonomous operation.
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基于稳定的地面反作用力和速度限制对双足机器人的位置控制
This paper implements position control of a biped robot via velocity control with automatically generated joint torque and velocity limits so as to have zero overshoot of the COM and sliding, tipping and twisting of the robots feet while allowing the COM to move in mimimum time to a refferential position. This method allows the position controller to be robust to external disturbances and is able to reject the maximum amount of external force without letting the feet tip over(not unnecesserily compliant like some methods). This method is also general in the sense that all 6 axes can have ground reaction force limits so sliding, twisiting and tipping of the feet can be prevented. Also this method does not require a refferential ZMP trajectory. Friction and coriollis forces are detected via a type of workspace disturbance observer. Knowledge of the magnitude of this disturbance allows the motor torques to be limited so that the total ground reaction force doesnt lead to unstable conditions at the feet. The proposed method with velocity limits is verified on the biped robot MARI-3 and it is shown that overshoot is eliminated while being compliant to external disturbances.
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机器人驱动马达特性测试计划——PackBot现代化项目
A test plan to measure voltage and current of active drive motors on a small robot under repeatable test conditions. Several positive and negative slope conditions are included.
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人机混合团队的认知与自主性的优化策略
No abstract available.
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一种新型爬树机器人:Treebot1
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人机交互:意图识别和相互牵引
Waltz is a typical example of physical human-human interaction (pHHI) in a well-structured environment. Waltz involves two dancers. The goal is to reproduce the female dancer's abilities with a robot in pHRI. The project focused on the lower level interaction in pHRI, i.e., coupled dynamics, and proposed a framework which covers modeling, analysis, human state sensing and robot control in developing a cooperative female robot dancer. The two dancers' coupled dynamics was modeled as two physically connected inverted pendulums. Stability of this two pendulum system was analyzed. The human state was measured by two laser range sensors, while the measurement noise and bias were corrected by a Kalman filter. Several candidate robot controllers were discussed and evaluated in experiments.