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Background The trihelix gene family is a plant-specific transcription factor family that plays important roles in plant growth, development, and responses to abiotic stresses. However, to date, no systemic characterization of the trihelix genes has yet been conducted in wheat and its close relatives. Results We identified a total of 94 trihelix genes in wheat, as well as 22 trihelix genes in Triticum urartu...
This article expands the tire pressure monitoring system into the vehicle ABS controller. Based on the Matlab tool, the simulation model of the fusion system was established, and three different road conditions were simulated and analyzed. The simulation results showed that the road attachment coefficient has less effect on the tire longitudinal rigidity than the tire pressure, which is necessary...
ABS and TPMS is a technical measure enhanced automobile initiative security. Nowadays ABS system and the TPMS system are mutually independent; the article proposed a merged thought between the two. Using fuzzy PID adaptive control algorithm realized two kinds of functions, and using mat lab tool simulates system. The simulation result showed that the fusion thought proposed in this article guaranteed...
In this paper we have researched on a method based on estimate of tire longitudinal stiffness for tire pressure monitoring. To solve the problem, a self-adaptive nonlinear filter and an optimal FIR derivative have been designed and applied to vehicle speed calculation and acceleration estimate respectively. Finally, the Least Squares method based on pattern search is adopted to estimate the tire longitudinal...
In this paper we present a novel nonlinear observer structure for estimating the tire-road friction force for tire pressure monitoring by use of the friction parameters identification results of LuGre tire model based on ant colony algorithm (ACA) with high precision. Simulation results show its feasibility for the simplified motion dynamics of a quarter-vehicle model and it may offer a new method...
In light of the high nonlinearity of LuGre friction model, a novel method based on ant colony algorithm (ACA) for identifying the friction parameters of LuGre tire model is proposed. ACA is a parallelized bionic optimization algorithm inspired from the behavior of real ants, and a kind of positive feedback mechanism is adopted in ACA. On the basis of brief introduction of LuGre friction model, a method...
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