Research on Calculation Method of the Target Parameters of K&C Test-Rig

Abstract

The suspension kinematics and compliance (hereafter referred to as 'K & C') characteristics as the important system assembly characteristics have a direct effect on the vehicle handling and stability performance and the ride comfort performance. The suspension K&C test rig is an key equipment to obtain the suspension K&C characteristics. Calculation method of the target parameters of K&C test-rig is studied. The movement law of the suspension K & C test rig is analyzed by useing the multi-body dynamics theory. Application Space rotation transformation matrix based on the measurement system structure is applied to solve the coordinates of the wheel center. Using the space vector operations and the definition of the toe angle and the camber angle, the solution method of the camber and toe angle is derived. The parralel wheel travel analysis using the multi-body dynamics model of the K&C test rig is taken. The simulation results when the rebound travel is-100mm is used to calculate the target parameters and verify the accuracy of the calculation method.Keywords-K&C test; calculation method; multi-body dynamics; rotation transformation matrix;

Low-cost p-benzoquinone-formaldehyde polymer/reduced graphene oxide composite films as a cathode material for rechargeable lithium-ion batteries

“…It should be noted that the capacity of the composite lms increases gradually in the initial several cycles at the current densities of 1000 mA g −1 and 2500 mA g −1 , which is attributed to the gradual activation of rGO during electrochemical cycling, especially at high current densities. [30][31][32] Compared with other electrode materials with the same electroactive unit (all with a theoretical specic capacity of 446 mA h g −1 ), 18,[21][22][23]33,34 carbonyl material/rGO composites, [35][36][37][38] carbonyl material/ carbon material composites, [39][40][41][42] and other carbonyl materials, [43][44][45][46][47][48][49][50][51][52] FQ/rGO in this work is among the best electrode materials in terms of cycling stability (Fig. S14 †).…”

“…Some of the organic electrode materials can only work well in certain types of electrodes, due to their high solubility in other electrolytes. 39,43,53 Here, we tested the capacity and stability of the FQ/rGO electrode in three common electrolytes as references, namely, 1.0 M LiPF 6 in EC/DMC (1 : 1 vol%, DMC for short), 1.0 M LiPF 6 in EC/DEC with 1% VC (1 : 1 wt%, VC : vinyl acetate, VC for short), and 1.0 M LiTFSI in DOL/DME (1 : 1 vol%, DOL : dioxolane, DME : ethylene glycol dimethyl ether, DOL for short). In particular, DMC is the electrolyte used in commercialized lithium-ion batteries.…”

Enhanced Redox Activity of Anthraquinone on N‐Doped Porous Carbon Electrode

“…TL(700)-AQ shows the highest storage capacity among the others, corresponding to 250 mAh g À 1 -AQ (97 % of the theoretical capacity), which is better than the values reported in the literature. [15,26,27,[35][36][37][38][39] In addition, the composite electrodes can maintain the capacity retention of less than 20 % over 1000 cycles at 2 A g À 1 (Figure S2). This is even better than other redox-active organic molecules reported in literatures (as listed in Table S3), further highlighting and benchmarking the performance of AQ-electrode in this study.…”

Analysis of the Demonstration of the Target Cost of Aviation Equipment Repair Under the New Bargaining Rules

“…Under the new rules, the target price needs to be established before each batch of aviation equipment repair. Airborne equipment is the first stage of repair of uncertainty, high risk, to try to fix the ChengXiu unit, the maintenance of equipment fault diagnosis technology is still belong to grope and adjustment stage, the need to be maintained by an inquest, study to determine the scope of the repair and specific repair measures, and gradually improve in the process of actual repair repair technology solutions, repair experience [6]. Along with the increase in repair vehicles, more indepth understanding of equipment fault rule, repair technology solutions is also gradually perfect, the factory repair ability gradually improve, the utilization rate of raw materials increase thereby, there is less working hours reduced, other consumable costs, repair costs to reduce gradually, finally with technical proficiency reaches a certain bottlenecks, the repair cost begins to flatten out.…”