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In this paper, a redundantly actuated chewing robot with two higher kinematic pairs (HKPs) is presented, which can be used in performance test and evaluation of denture material. The robot has six actuators, but only has four degrees of freedom, due to constraints of two HKPs which mimic two temporomandibular joints (TMJs) of human. Quasi-static force analysis in occlusion status is performed to calculate...
This paper proposed a VR-based self-rehabilitation system which utilizes the virtual training model rendered by OpenGL and collects electromyography (EMG) signals from the subjects to perform hand motion recognition. EMG signals are biomedical signals generated in muscles and can be applied in many fields such as clinical diagnosis and biomedical applications. The subjects were asked to manipulate...
This paper presents an energy recuperative eddy current retarder (ERECR), which offers a solution to the energy consumption and overheating issues of the conventional eddy current retarders (ECR). The ERECR obtains three main systems, namely Eddy Current Braking (ECB) system, Regenerative Braking (RGB) system, and Electrical Control System. The RGB system, which could recover the kinetic energy from...
Tamping devices have a common problem that the amplitude and frequency of the tamping tool cannot be adjusted and, thus, are too inflexible to satisfy different working demands. In order to solve this problem, mathematical modeling and analysis of a new tamping arm are developed according to the technical parameters of the existing tamping devices, and the configuration of the new tamping exciter...
As snake is one of the animals with the best obstacle performance in the nature, snake-like robot with the movement mechanism and behavioral pattern of a biological snake has broad application prospects. This paper designs a rope-drive snake-like robot driven by the friction of the rope instead of the traditional twisting forward movement pattern, the new drive mode can provide more power for the...
The requirements of higher train speed, safety and more smooth and comfortable travelLing are increasing strongly. This leads the need of predictive maintenance. Tamping machines have been used for this purpose. Tamping machines on the market are mostly mechanically driven. A new hydrauLically driven tamping device is proposed to overcome the Limitations of mechanically driven machines. A new type...
Because of the difficulty of maintenance resulting from tamping arms not working alone and the amplitude of tamping tool not being set for the existing tamper, a new type of tamper is proposed in this paper. For the new tamper, each piece of hydraulic shock mechanism can excite one couple of tamping tools to vibrate. The mechanism consists of a double-rod piston cylinder and a shifting yoke. The three-dimensional...
Switched reluctance motor drive system becomes an attractive alternative in adjustable speed drive due to its simplicity in both motor construction and power converter, and vibration that resulting acoustic noise in switched reluctance motor have generated intense interest from the time it became commercially competitive with dc and ac drives. Focus on the magnetic noise vibration, dig the relationship...
Curriculum evaluation is an important part of educational assessment. Gray relational analysis method can be applied to course evaluation in this paper. Grey correlation degree reflects the distance between a selected scheme and the ideal solution. The method was applied to actual course assessment situation of Capital Normal University Information Engineering College. The results indicate that this...
A thin variable cross section beam is usually clamped at both ends. An electrostatic voltage applied to the electrode pad directly underneath the beam leads to a two-dimensional 2-D effect. The electrostatic energy stored in the capacitive beam-pad dielectric gap is decoupled from the mechanical deformation of the beam. A novel method was put forward here in order to describe this 2-D effect. Three...
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