scholarly journals Research on Nonlinear Characteristics of Bidirectional Adjustable Oil and Gas Suspension System And simulation analysis

2020 ◽  
Vol 440 ◽  
pp. 052050
Author(s):  
Hang Zhang ◽  
lin Sha ◽  
Xiangchun Chen ◽  
Wei Hu ◽  
Jianhua Li
Keyword(s):  
Oil And Gas ◽  
Simulation Analysis ◽  
Suspension System ◽  
Gas Suspension ◽  
Nonlinear Characteristics

The Simulation Analysis of Semi-Active Suspension System in Vehicle Based on Sliding Mode Control with Varying Structure

2011 ◽  
Vol 216 ◽  
pp. 96-100
Author(s):  
Jing Jun Zhang ◽  
Wei Sha Han ◽  
Li Ya Cao ◽  
Rui Zhen Gao
Keyword(s):  
Control Method ◽  
Simulation Analysis ◽  
Reference Model ◽  
Sliding Mode ◽  
Tracking Error ◽  
Active Suspension ◽  
Suspension System ◽  
Sliding Mode Controller ◽  
Error Dynamics ◽  
Dynamic Quality

A sliding mode controller for semi-active suspension system of a quarter car is designed with sliding model varying structure control method. This controller chooses Skyhook as a reference model, and to force the tracking error dynamics between the reference model and the plant in an asymptotically stable sliding mode. An equal near rate is used to improve the dynamic quality of sliding mode motion. Simulation result shows that the stability of performance of the sliding-mode controller can effectively improve the driving smoothness and safety.

Automatic tool with adaptive suspension system for high-quality inspection of underwater risers

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Vivian Suzano Medeiros ◽  
Alan Conci Kubrusly ◽  
Raphael Lydia Bertoche ◽  
Miguel Andrade Freitas ◽  
Claudio Camerini ◽  
...  
Keyword(s):  
Control System ◽  
Oil And Gas ◽  
Pipe Wall ◽  
Mechanical Design ◽  
Experimental Tests ◽  
Gas Production ◽  
Suspension System ◽  
Inspection System ◽  
High Definition ◽  
Content Type

Purpose The inspection of flexible risers is a critical activity to ensure continuous productivity and safety in oil and gas production. The purpose of this paper is to present the design and development of a novel automatic underwater tool for riser inspection that fits the most commonly used riser diameters and significantly improves inspection quality and reduces its operating costs. Design/methodology/approach The mechanical and electronic design of the inspection system is discussed, as well as its embedded sensors and control system. The tool is equipped with a suspension system that is able to adapt to the riser diameter and negotiate obstacles on the pipe wall. Numerical simulations were carried out to analyze the mechanical design, and a hardware-in-the-loop simulation was developed for tuning the control system. Further, experimental results are presented and discussed. Findings Experimental tests in laboratory tanks and shallow seawater have confirmed the effectiveness of the tool for detailed real-time inspection of underwater pipelines. Practical implications The use of the proposed tool will potentially reduce the time and costs for riser inspection, currently performed by divers or high-cost ROVs. Originality/value The authors present a reliable tool able to perform automatic inspections up to 250 m deep in less than 30 min, equipped with a high-definition visual inspection system, composed of full-HD cameras and lasers and a suspension mechanism that can negotiate sharp obstacles in the pipe wall up to 25 mm high. The tool uses a comprehensive control system that autonomously performs a full inspection, collecting sensors data and returning safely to the surface. Its robust design can be used as basis for several other nondestructive techniques, such as ultrasound and X-ray.

Research on Vibration Model of Special Vehicle Based on Dual-Mass System

2013 ◽  
Vol 385-386 ◽  
pp. 89-92 ◽  
Author(s):  
Ya Jun Shao ◽  
Qin He Gao ◽  
Hong Jie Cheng
Keyword(s):  
Characteristic Curve ◽  
Suspension System ◽  
Mass System ◽  
Nonlinear Characteristics ◽  
Actual Structure ◽  
Vibration Model ◽  
Special Vehicle ◽  
Set Up ◽  
Stiffness And Damping ◽  
The Mathematical Model

Taking a special vehicle vibration system as the research object, according to the actual structure of the chassis, the spring damping and stiffness of the nonlinear characteristics and the tire vertical elastic accounted, a nonlinear vibration model of special vehicle based on dual-mass-system is set up. The tire radial stiffness value is analyzed in Ansys, a simulation is performed by leading the mathematical model of suspension system into Adams, a characteristic curve of stiffness and damping of suspension system is obtained.

scholarly journals Analysis and Research on the Comprehensive Performance of Vehicle Magnetorheological Regenerative Suspension

Vehicles ◽  
2020 ◽  
Vol 2 (4) ◽  
pp. 576-588
Author(s):  
Jinhui Huang ◽  
Enrong Wang ◽  
Hailong Zhang
Keyword(s):  
Simulation Analysis ◽  
Element Model ◽  
Suspension System ◽  
Vehicle Engineering ◽  
Joint Simulation ◽  
Natural Resonance ◽  
Permanent Magnet Linear Motor ◽  
The Stability ◽  
Natural Resonance Frequency ◽  
Suspension Performance

Magnetorheological (MR) regenerative suspension system can not only achieve excellent comprehensive suspension performance but also effectively recover and utilize vibration potential energy, which has been a research hotspot in the field of vehicle engineering. In this paper, for the 1/4 vehicle’s MR regenerative suspension system parallel with a tubular permanent magnet linear motor (TPMLM), the dynamic model of the MR semi-active suspension system and the TPMLM finite element model are established separately to form a joint simulation platform. The simulation analysis of the comprehensive suspension performance and regeneration performance under different road excitations is performed. The results show that installing TPMLM does not change the natural resonance frequency of the suspension system, which ensures good driving comfort and handling stability. At the same time, it has considerable regeneration power. This research can provide a reference for the stability analysis and popularization of the vehicle’s MR regenerative suspension system.

scholarly journals Design and experimental study of the energy-regenerative circuit of a hybrid vehicle suspension

2019 ◽  
Vol 103 (1) ◽  
pp. 003685041987499 ◽  
Author(s):  
Xiaofeng Yang ◽  
Wentao Zhao ◽  
Yanling Liu ◽  
Long Chen ◽  
Xiangpeng Meng
Keyword(s):  
Simulation Analysis ◽  
Dynamic Performance ◽  
Hybrid Vehicle ◽  
Linear Motor ◽  
Suspension System ◽  
Vehicle Suspension ◽  
Super Capacitor ◽  
Performance Indexes ◽  
Vehicle Suspension System ◽  
The Impact

This article concerns a hybrid vehicle suspension system that can regenerate energy from vibrations. To further improve the performance of the hybrid vehicle suspension system, the design of the energy-regenerative circuit is investigated. First, the force tests of the linear motor used in the hybrid vehicle suspension were carried out, and the key parameters of the linear motor were obtained. Then, the selection procedures of the protective resistance, inductance, and initial terminal voltage of the super capacitor were discussed. These aforementioned parameters’ values were determined by considering the impact of the hybrid suspension on the dynamic performance indexes and the energy-regenerative efficiency. Simulations showed that, in comparison to the original hybrid suspension system, the designed hybrid suspension effectively improved the energy-regenerative efficiency, and that the dynamic performance indexes of the suspension were synchronously improved. Given the result of the simulation analysis, which were validated by bench tests, it is shown that the optimized energy-regenerative circuit presents an enhanced regeneration efficiency, with an improvement of nearly 13% compared to the original suspension system.

Function Simulation Analysis for Conical Spring of DANA Axis-Fixed Transmission

2011 ◽  
Vol 305 ◽  
pp. 57-60
Author(s):  
Da Lei Li ◽  
Yue Feng Yin ◽  
Fang Fang Ding
Keyword(s):  
Natural Frequencies ◽  
Simulation Analysis ◽  
Good Stability ◽  
Modal Shape ◽  
Nonlinear Characteristics ◽  
Critical Part ◽  
Service Load ◽  
Deformation Law ◽  
Vibration Attenuation

The conical spring is one critical part of DANA MHR-3200 series Transmission, its structure is compact and it has good stability and used for bearing larger load and vibration attenuation. Using SolidWorks Simulation to conduct simulation analysis for the stiffness and modality of conical spring, acquire the deformation law of spring under service load, the stiffness curve with nonlinear characteristics, the first four orders natural frequencies and its modal shape, which will lay a foundation for the RE design of conical spring and provide basis for its reconfiguration and repair after lose efficacy.

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