Spring coefficient

This paper proposes a model reference adaptive control (MRAC) design for vehicle active suspension systems with unknown spring stiffness and damping coefficients with the aim of improving the performance of suspension systems. A mathematical model of a half-car active suspension system is first presented, then a reference model of a half-car suspension system that utilizes the skyhook damping concept is proposed.

8p vialicene 02-07-2024 0 0   Download

The most common automotive suspension systems have been used passive components with fixed damping coefficient and spring constant. They are two separate functions to reach a compromise between drive quality and handling performance.

10p visusanwojcicki 28-06-2022 16 3   Download

The paper goes into research on the formulas to determine the dynamic spring coefficients according to Japanese and Vietnamese standards. Then, apply calculations for dynamic analysis models of pile foundations built in the Binh Thuan sea area. The impact vibration test in the field shows the appropriate formula for calculating the coefficient of dynamic springs in Binh Thuan, Vietnam.

8p vielonmusk 21-01-2022 42 0   Download

This paper studies the vibration analysis of the powertrain’s four-point suspension system of light truck. The method of reseash is simulation by using MATLAB Simulink. The relationship between the system’s physical parameters (spring stiffness and damping coefficient) and the vibration parameters is then analyzed to find the best combination of the physical parameters that yields the optimized vibration behavior. An experimental of measuring the vibration frequencies at the four-point of powertrain's suspension with the engine working with different rotation.

4p kequaidan11 13-04-2021 9 2   Download

This paper presented a method to reduce the torsional vibration of a shaft system with dynamic vibration absorber (DVA). A theoretical method was introduced to determine optimal parameters of the DVA, which included spring stiffness, viscous coefficient of damper, mass moment of inertia of the absorber, number, and radial position of springs and dampers. First, system equations of motion of the shaft and the DVA were elaborated using Finite Element method (FEM) and solved by Runge-Kutta algorithm to find the torsional vibration response.

6p chauchaungayxua11 23-03-2021 12 1   Download

Weirs are overflow structures used to measure flow or to control the water elevation. In sharp crested weirs sharp edge in the crest causes the water to spring clear of the crest and thus accurate measurements can be made and results beneficial to tail end farms in a field channel. Hence, sharp crested weirs are used for experimentation. The research project was envisaged with the following objectives to develop sharp crested rectangular weirs with 30°, 45° and 60° edge angles.

5p chauchaungayxua8 03-10-2020 11 0   Download

Seven release varieties of sugarcane (Saccharum officinarum L.) were evaluated for G X E interaction, adaptability with sustainability index and their comparison for cane yield (t/ha) incomplete randomized block design during spring season of 2015-16, 2016-17, 2017-18, 2018-19 & 2019-20 at Agricultural Research station, Ummedganj, Kota under SouthEastern Plane Zone of Rajasthan. The mean cane yield (t/ha.), regression coefficient (bi) and deviation from regression (S2 d) with sustainability index was used to identify the stability and adaptability of popular sugarcane varieties.

7p caygaocaolon7 18-09-2020 17 1   Download

The present experiment aimed to evaluate variability, heritability and genetic advance as per cent over mean for physiological and biochemical traits in twenty one thermo tolerant tomato genotypes. The experiment was conducted at the Experimental Farm, Division of Vegetable Science, Indian Agricultural Research Institute, New Delhi during spring– summer season (March-June) of the year 2014.

7p chauchaungayxua6 26-06-2020 15 1   Download

Genetic diversity and the association of the target traits with other traits are the foundation for any crop improvement programme. 308 genotypes of spring wheat reference set (SWRS) were evaluated in simple lattice during crop-season 2015-16 to study genetic diversity and, character association. Phenotypic data were recorded on 15 nutrients and grain yield traits. Analysis of variance revealed significant differences among all the genotypes.

12p angicungduoc4 26-04-2020 19 1   Download

Daffodil (Narcissus spp.) belongs to family Amaryllidaceae and is a bulbous perennial grown for attractive flower, borne in spring sometimes autumn or winter. The present study was carried out to assess the genetic diversity present in daffodils in temperate region of Kashmir India using eleven sample sequence repeats (SSR’s). Twenty seven genotypes of daffodils belonging to different species such as Narcissus incomparabilis, Narcissus pseudonarcissus, Narcissus jonquilla, Narcissus poeticus, Narcissus papyraceus were evaluated for molecular characterization.

10p nguathienthan2 26-12-2019 32 0   Download