Because of the communication distance, the more nodes, the requirements of high real-time, LED lighting control system for railway vehicle carriage chooses Controller Area Network (CAN) as the communication mode to achieve centralized control in all carriages. Illuminance gathered from multi-sensors which were installed on the surface of the carriages was feed back to the Industrial Personal Computer (IPC). And then, through the incremental PID control algorithm, the IPC achieve the brightness of the lighting system intelligent control for vehicle consulting brightness intensity which according to the external environment. Experiment shows that this method is practical and effective.
With the development of robot technology, massage robot has attracted fully attention, and the study about robot arm has been a growing interest in the area of massage robot. This article has put forward a new massage robot arm, which uses the chain as the main transfer mode by the requirements of the overall design massage of the robot arm. The design of big arm, shoulder joint, forearm, elbow joint and wrist are introduced. Based on the design requirements, we made some improvements with sprockets, ensuring transmission conditions and meeting the massage requirements. And finite element analysis for the designed arm, results show that the structure design can meet the requirements.
The arm is a key component of the humanoid massage robot system. On the basis of in-depth study on massage working mechanism of robot arm, a three dimensional parametric model is structured using SolidWorks. Through data conversion technology, the model is imported into ADAMS, and follow-up constraints and loads are added, with which the kinematics analysis on shoulder, upper arm and wrist joint are completed. It lays a solid foundation for the in-depth study on robot arm of massage working mechanism and the practical application. It can realize the prediction of the massage arm performance on the design phase, simplify the design process and shorten the cycle of the design as well as improve the design quality.
For the use of CNC machine tools is more and more extensive, its fault diagnosis research is becoming more and more important. Failure forms are diversified, and fault reasons are very complicated. Once bearing that is an important transmission part is in fault, the machining efficiency will decrease and affect process accuracy, even make the machine work abnormally. This paper presents a deep analysis of bearing failure mechanism using the wavelet analysis method identify its failure, specially the motor and transmission machine bearing, which provides reliable basis for fault diagnosis and forecast.
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