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A multi-body dynamic model of a wind turbine power generation system (WTPGS), with a turbine blade model and hydro-mechanical hybrid power transmission (HMHPT), is developed and simulated. In HMHPT, the hydrostatic power transmission (HPT) improves the system controllability and the gear train obtains higher speeds in the electric generator. The HMHPT's benefits are improved system controllability and higher generator speed. Pump and motor leakages are analyzed based on system performance.

The haptic interactive robot based on a cable-driven parallel mechanism studied in this paper is mainly used for interactive training between an astronaut and a virtual environment. This haptic interactive robot can accurately simulate the motion and mechanical characteristics of objects in a microgravity environment and can safely interact with astronauts.

A contour error prediction model based on LSTM (long short-term memory) is established. By inputting power, vibration signal, and temperature values, the contour error of parts can be predicted to adjust the feed speed in real time. In this way, we can obtain not only higher machining accuracy, but also higher machining efficiency and reduce the scrap rate. The model is compared with other models, and the optimal model is selected to obtain the optimal prediction effect.

A new type of wheel–leg deformation mechanism, based on an electromagnetic clutch and gear rack transmission mechanism, is designed for moving on complex terrain. The walking model is established to study the kinematics characteristics and obstacle-surmounting performance of the mechanism. The stability cone method is used to evaluate the rollover stability and anti-interference ability in order to ensure the normal operation of the mechanism.

Bladed disk systems with advanced functions are widely used in turbo-machineries. In this paper, a novel mathematical model of the resonance of an intentional mistuning bladed disk system is established. Mistuning of blades and energy resonance are included in this theoretical model. This paper will provide guidance for the design of dynamic characteristics of the intentional mistuning bladed disk.

The closed-form dynamics equation of the 1.8 m aperture parallel antenna is established. The relationship between the mechanism's natural frequency, displacement response, and resonance frequency is obtained. Based on the dynamic model, the closed-loop motion control strategy of the parallel antenna mechanism is established. The tracking error of the pitch and azimuth motion of the parallel antenna in the workspace is within ±0.05°.

A novel helical gear mechanism with improved geometry is proposed to reduce transmission errors. For the novel spiral gear mechanism with improved geometry, the maximal contact stresses change more smoothly and have a stronger bearing capacity. The results show that, under the same conditions, the gear in this paper improves the transmission accuracy, and the bearing capacity is also stronger.

A super element of the telescopic boom for an all-terrain crane is proposed, and its geometric nonlinear calculation is realized by the co-rotational (CR) formulation. Considering the cable force, the nonlinear equilibrium equations of the system are established, which are transformed into differential equations, and the load displacement curves of the nodes are obtained. Through the slope ratio of the load displacement curve, the judgment criterion of the instability load is established.

Aiming at the potential safety problems caused by the looseness of bucket teeth of the electric shovel, we propose an improved YOLOX algorithm. After introducing the dilated CBAM, the deep separable convolution, and model compression, the mAP is decreased by 0.33 %, the detection speed is increased by 11.9 fps, and the model volume is reduced to 29.46 % of the YOLOX model. It provides a theoretical basis and technical support for the development of intelligent mines and mining intelligence.

In order to store grain in large warehouses, a process is required that will prevent the effects of mildew and heat. Real-time monitoring of the grain status is needed. Using the information obtained from the monitoring system, corresponding measures were taken for the heating and mildew points in the grain pile. We proposed a drill which is a granary grain condition detector. It can be equipped with temperature, CO₂, and humidity sensors and gather information by entering the grain pile.

Robot-assisted rehabilitation has proven to be effective for improving the motor performance of patients with neuromuscular injuries. Therefore, the main purpose of this paper is to present a new patient-cooperative control framework for an end-effector upper-limb rehabilitation robot that provides robot-assisted training for individuals with neuromuscular disorders. The feasibility of the proposed control scheme is validated via training experiments using five healthy subjects.

This study mainly analyzed the mechanism and technology of nine existing vertically arranged mechanical turret clocks manufactured in Europe from the 15th to the 17th century, in order to determine the design rules based on mechanical evolution and variation. This study provided new historical materials that could be applied in the research of science and technology history, as well as in innovative and science education.

First, we compare the advantages and disadvantages of existing navigation devices in agriculture and select the magnetic navigation with low cost and high reliability. We then establish the motion model of the table. The fuzzy proportion integration differentiation (PID) control strategy is determined through the model's analysis, and the fuzzy PID controller is designed and simulated in MATLAB. Finally, the test is verified under two different conditions of straight road and curved road.