Search Results - "Jixie chuandong"

ObjectiveTo simulate the meshing state of gear teeth under actual working conditions and reveal the meshing transmission mechanism of gears under actual working conditions, the flow field model of gear meshing process was established based on the multiphase flow model and the dynamic mesh method.Met...

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ObjectiveIn response to the bifurcation and chaos phenomena in the dynamics of giant magnetostrictive actuator (GMA), which reduce the output stability of the system, a velocity delay feedback controller was designed to suppress the main resonance bifurcation and chaotic motion of the GMA system.Met...

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ObjectiveTo investigate the influence of meshing impact on the dynamic characteristics of two-stage helical gear transmission systems in electric vehicles and provide references for the design of such transmissions.MethodsA two-stage helical gear transmission system of an electric vehicle was taken...

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ObjectiveAiming at the problems of low parameter estimation efficiency and lack of multi-trajectory modeling ability in traditional robot demonstration learning algorithm, an online modeling method of robot multiple demonstration trajectories based on composite dynamical movement primitives was prop...

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ObjectiveAiming at the problems that angular errors in key load-bearing components such as crankshafts, cycloidal gears, and pin gear shells during processing and manufacturing lead to the reduction of transmission accuracy and stability of rotary vector (RV) reducers, an angular error adjustment me...

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ObjectiveThe global path planning algorithm for mobile robots currently faces challenges such as excessive inflection points, prolonged computation time, and inefficiency in complex environments. To address these issues, an improved A^* algorithm was proposed and experimentally...

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ObjectiveTo meet the task requirements of ground-based special robots in complex environments, such as earthquake relief, a wheel-tracked reconfigurable wheel without elastic compensation elements was designed.MethodsFirstly, the system composition and working principles of the planetary expansion a...

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ObjectiveTo address the issue of poor adaptability to the unstructured terrain in mobile systems, a six-legged robot with bouncing characteristics was proposed, and the overall configuration and individual legs of the robot were structurally designed.MethodsA comparison was made between the crawling...

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ObjectiveA 2-UPS/RRR parallel mechanism was created for the rehabilitation of the ankle.MethodsThe mechanism’s three-dimensional model was created using SolidWorks software, and a moveable platform with an adjustable center of rotation was designed in accordance with various ankle rotation centers o...

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ObjectiveA heavy truck’s ten-speed transmission was taken as the research objective, the whistling problem under the rapid acceleration in 6th, 7th, and 8th gears was analyzed and solved.MethodsThe order tracking method was used to determine the source of whistling, the gear was optimized through th...

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ObjectiveIn order to simulate the trajectory route of the “Long March” and realize punching and voice broadcasting through fixed punching points, a new energy electric vehicle based on the cam mechanism was designed.MethodsFirstly, the fixed punch point was used as the interpolation node, the trajec...

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ObjectiveThe high contact ratio (HCR) gear pair basically does not need to increase the weight of the gear device to achieve an increase in carrying capacity and a smoother transmission. Therefore, the use of HCR gears instead of ordinary gears in the transmission system was proposed to improve the...

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ObjectiveAiming at the problem that the bouncing robot is easily toppled and unstable when landing, a three-momentum wheel bouncing robot with orthogonal arrangement was designed.MethodsFirstly, the static stability of the robot was analysed using the static stability boundary method, which proved t...

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ObjectiveThe structural composition and working conditions of hybrid electric engines are different from those of traditional fuel vehicle engines. As an important component of engines, the timing silent chain system still lacks design improvements and simulation verification for hybrid working cond...

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ObjectiveTo address the edge contact and uneven load distribution caused by angular misalignment in involute spline pairs, an efficient optimal design method based on contact mechanical characteristics was proposed, overcoming the limitations of the low efficiency in traditional trial-and-error crow...

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ObjectiveAiming at the problem of thermal characteristics of dry gear hobbing machines, the research on multi-source information fusion test and analysis was carried out.MethodsBased on the analysis of the structure layout and the law of multi-source heat generation and heat dissipation of the dry g...

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ObjectiveTo solve the problem of the complex control algorithm of the previous three-translation （3T） parallel mechanism in achieving curve trajectory translation, a new type of mechanism that can achieve curve trajectory based on the characteristics of the mechanism itself was proposed.MethodsBased...

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ObjectiveIn order to verify the advantages of the octoidal bevel gear in processing and meshing performance, it was compared with the spherical involute bevel gear.MethodsFirstly, with the help of the spatial involute generation theory and coordinate transformation, the tooth surface equation of the...

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ObjectiveThe composite pitch block chain drive is widely used in the cold drawing machine and other similar equipment in the mechanical industry. The block chain has a special structure with different pitches between internal and external links, which is completely different from the ordinary roller...

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ObjectiveHerringbone gears inevitably exhibit bilateral tooth misalignment during manufacturing, which may cause excessive load differences between bilateral teeth or even single-side loading, leading to premature gear failure. To address this issue, the influence of misalignment error on the stress...

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