scholarly journals Study on the Vibration Active Control of Three-Support Shafting with Smart Spring While Accelerating over the Critical Speed

2020 ◽  
Vol 10 (17) ◽  
pp. 6100 ◽  
Author(s):  
Miao-Miao Li ◽  
Liang-Liang Ma ◽  
Chuan-Guo Wu ◽  
Ru-Peng Zhu
Keyword(s):  
Simulation Model ◽  
Vibration Control ◽  
Control Strategy ◽  
Critical Speed ◽  
Vibration Reduction ◽  
Great Influence ◽  
Control Force ◽  
Joint Simulation ◽  
Shaft System ◽  
Simulation Results

Smart Spring is a kind of active vibration control device based on piezoelectric material, which can effectively suppress the vibration of the shaft system in an over-critical state, and the selection of control strategy has great influence on the vibration reduction effect of the Smart Spring. In this paper, the authors investigate the control of the over-critical vibration of the transmission shaft system with Smart Spring, based on the ADAMS and MATLAB joint simulation method. Firstly, the joint simulation model of three-support shafting with Smart Spring is established, and the over-critical speed simulation analysis of the three-support shafting under the fixed control force of the Smart Spring is carried out. The simulation results show that the maximum vibration reduction rate is 71.6%. The accuracy of the joint simulation model is verified by the experiment of the three-support shafting subcritical vibration control. On this basis, a function control force vibration control strategy with time-varying control force is proposed. By analyzing the axis orbit of the shafting, the optimal fixed control force at different speeds is obtained, the control force function is determined by polynomial fitting, and the shafting critical crossing simulation under the function control force is carried out. The simulation results show that the displacement response of the shafting under the function control force is less than that under the fixed control force in the whole speed range.

Tire Force Control Strategy for Semi Active Magnetorheological Damper Suspension System Using Quarter Heavy Vehicle Model

2015 ◽  
Vol 789-790 ◽  
pp. 957-961
Author(s):  
Syabillah Sulaiman ◽  
Pakharuddin Mohd Samin ◽  
Hishamuddin Jamaluddin ◽  
Roslan Abd Rahman ◽  
Saiful Anuar Abu Bakar
Keyword(s):  
Simulation Model ◽  
Control Strategy ◽  
Force Control ◽  
Mr Damper ◽  
Magnetorheological Damper ◽  
Vehicle Suspension ◽  
Heavy Vehicle ◽  
Vehicle Model ◽  
Tire Force ◽  
Simulation Results

This paper proposed semi active controller scheme for magnetorheological (MR) damper of a heavy vehicle suspension known as Tire Force Control (TFC). A reported algorithm in the literature to reduce tire force is Groundhook (GRD). Thus, the objective of this paper is to investigate the effectiveness of the proposed TFC algorithm compared to GRD. These algorithms are applied to a quarter heavy vehicle models, where the objective of the proposed controller is to reduce unsprung force (tire force). The simulation model was developed and simulated using MATLAB Simulink software. The use of semi active MR damper using TFC is analytically studied. Ride test was conducted at three different speeds and three bump heights, and the simulation results of TFC and GRD are compared and analysed. The results showed that the proposed controller is able to reduced tire force significantly compared to GRD control strategy.

Vibration Control of a Distributed Axially Moving String Using Two Actuators

1997 ◽  
Author(s):  
M. S. de Queiroz ◽  
D. M. Dawson ◽  
C. D. Rahn ◽  
F. Zhang
Keyword(s):  
Control Strategy ◽  
Distributed Parameter ◽  
Control Force ◽  
Control Torque ◽  
Type Analysis ◽  
Control Laws ◽  
Parameter Field ◽  
Simulation Results ◽  
Axially Moving ◽  
Mechanical Guide

Abstract In this paper, we consider the problem of regulating the displacement of an axial moving string using a control force and a control torque applied to the string via a mechanical guide. Given the hybrid model of the web system (i.e., distributed parameter field equation coupled to a discrete actuator equation), a Lyapunov-type analysis is utilized to design exact model knowledge and adaptive control laws that exponentially and asymptotically stabilize the string displacement, respectively. Dynamic simulation results demonstrate the vibration damping provided by the control strategy.

Analysis of Dynamic Characteristics of Automatic Transmission Shifting Control

2014 ◽  
Vol 643 ◽  
pp. 42-47 ◽  
Author(s):  
Yan Xiao Fu ◽  
Liang Yi Cui ◽  
Xiang Yang Xu ◽  
Peng Dong
Keyword(s):  
Simulation Model ◽  
Control Strategy ◽  
Model Simulation ◽  
Automatic Transmission ◽  
Test Results ◽  
Shift Quality ◽  
Impact Function ◽  
Automatic Transmissions ◽  
Simulation Results ◽  
The Impact

Basing on the fact that requirements for shift quality in automatic transmissions have been increasing rapidly necessitates the establishment of a suitable shifting control strategy in order to facilitate smoothness of different processes, this paper introduces a simulation model of an 8-speed automatic transmission for front-drive vehicles with respect to detailed shifting strategies and relative parameters. The transmitted torque of the oncoming shift elements before synchronization point can be reduced by an impact function in order to damp the impact and thus make the gear shifting process more smooth. This paper makes a systematic introduction of the structure of 8AT, theoretical basis of control strategy, the establishment of the simulation model and the comparison between test results and simulation results. The conclusion shows that with an accurate dynamic model, simulation results and test results are neighborhood data, the simulation model can be used to help realizing the ultimate goal of better shift quality with higher efficiency, lower shift loads and improved shifting comfort.

scholarly journals Influence of Hydraulic Domain on Vibration Control and Overload Prediction of High-Speed Punching Press: Multidomain Modelling and Experiment

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Teng Xu ◽  
Qinxiang Xia ◽  
Xiaoyu Wu ◽  
Jiaqi Ran ◽  
Feng Gong ◽  
...  
Keyword(s):  
Vibration Control ◽  
Hydraulic System ◽  
High Speed ◽  
Vibration Reduction ◽  
Experimental Results ◽  
Protection Efficiency ◽  
Modelling Method ◽  
Reduction Function ◽  
Simulation Results

By the multidomain modelling method, the vibration of a high-speed punching press was modelled and simulated, and the influence of the hydraulic system on the vibration of the punching press and the protection efficiency of the punching press under the overload condition was discussed. The multidomain simulation results were compared with the experimental results to the validity of the multidomain model on a punching press with a hydraulic system for vibration reduction function.

Closed Form Control Gains for Zero Assignment in the Time Delayed System

2010 ◽  
Vol 6 (2) ◽  
Author(s):  
Kumar Vikram Singh ◽  
Biswa Nath Datta ◽  
Mayank Tyagi
Keyword(s):  
Time Delay ◽  
Vibration Control ◽  
Closed Form ◽  
Control Strategy ◽  
Taylor Series Expansion ◽  
Small Time ◽  
State Feedback Control ◽  
Control Force ◽  
Sensors And Actuators ◽  
The Stability

Control of the vibrating structures is desirable in various engineering applications for preventing fatigue and failure. It can be achieved by passive means using dynamic absorbers or by active means using sensors and actuators. In some cases, it is also not practical to apply a desirable control force in those locations at which the dynamics of the structure are to be controlled. In recent years, dynamic absorption schemes are investigated in which control strategies that absorb a steady state motion of a desired location in the structure have been developed. Such a vibration control strategy is termed as zero assignment. Unlike conventional full-state feedback control, which requires all the states of the system to be measured, zero assignment requires least numbers of sensors and actuators (depending on the number of dynamic absorption points) for estimating the control gains and, hence, it may provide economical engineering solution. However, while applying control strategy by active zero assignment, small time delay from the sensors and actuators in the feedback loop is unavoidable and they influence the control gains as well as the stability of the system. In this paper, we have developed vibration control strategy by active zero assignment and obtained closed form control gains for systems with and without time delays by using truncated and full Taylor series expansion. Some examples related to conservative and nonconservative systems as well as realistic distributed parameter systems are presented to demonstrate the active dynamic absorption and the effects of time delay on control gains. The effect of delay in the stability of the controlled system is also summarized.

Design and Simulation of Power System for Hybrid Sweeper Truck

2013 ◽  
Vol 389 ◽  
pp. 435-440
Author(s):  
Bing Li Zhang ◽  
Lun Zhen Wang ◽  
Fu Bin Xiao ◽  
Xin Ying Ou
Keyword(s):  
Power System ◽  
Simulation Model ◽  
Fuel Consumption ◽  
Hybrid System ◽  
Fuel Economy ◽  
Control Strategy ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Simulation Results ◽  
And Control

A hybrid system scheme was designed for the sweeper truck, to solve the problems of high fuel consumption and poor emission performance of traditional sweeper. The control strategy was determined for the hybrid power system. The simulation model of hybrid sweeper truck was built with Matlab/Simulink, and off-line simulation was completed to verify the power system scheme and control strategy, the simulation results indicate that the hybrid sweep truck can realize functions of sweeper and improve the fuel economy.

Dual Clutch Automatic Transmission Two Clutch Starting Control and Simulation

2013 ◽  
Vol 372 ◽  
pp. 538-542
Author(s):  
Guo Zhong Jia ◽  
Xin Ping Wu ◽  
Zhen Hua Jia
Keyword(s):  
Simulation Model ◽  
Control Strategy ◽  
Control Strategies ◽  
Automatic Transmission ◽  
Control Model ◽  
Launch Strategy ◽  
Simulation Results ◽  
Clutch Control ◽  
The Impact ◽  
Starting Control

According to the special structure of DCT, the control strategy of launch with two clutches has been proposed to share the friction work and extend the life of both clutches. The dynamic model of launch with two clutches and the clutch control model have been built. the control strategies of both clutches have been proposed respectively according to the requirement of the different driver intention and the limitation of the impact of vehicle. The simulation model of launch with two clutches has been built using the Matlab/Simulink platform, and the simulation has been carried out. The Simulation results show that the balance of friction work based on this launch strategy with two clutches has been validated.

Towards a simulation-benchmark for evaluating respirometry-based control strategies

1998 ◽  
Vol 37 (12) ◽  
pp. 219-226 ◽  
Author(s):  
Henri Spanjers ◽  
Peter Vanrolleghem ◽  
Khanh Nguyen ◽  
Henk Vanhooren ◽  
Gilles G. Patry
Keyword(s):  
Simulation Model ◽  
Control Strategy ◽  
State Of The Art ◽  
Control Strategies ◽  
Test Procedure ◽  
Full Scale ◽  
Simulation Studies ◽  
Convenient Means ◽  
Simulation Based ◽  
Simulation Results

Many respirometry-based control strategies have been proposed in the literature but few successful practical implementations or even simulation-based evaluations have been reported. The state-of-the-art provides insufficient justification for the development of a how-to-do procedure for such control strategies in full scale. It is, therefore, expected that carefully conducted simulation studies will greatly support the evaluation of proposed strategies and, eventually, the implementation in practice. These studies should be based on a rigorous methodology including simulation model, plant layout, controller and test procedure. This paper describes the development of such a methodology, termed “benchmark”. The benchmark is evaluated on the basis of a respirometry-based control strategy from the literature. Some simulation results are shown and modifications to the strategy imperative to the implementation in the benchmark are discussed. It is concluded that the benchmark provides a convenient means to perform a number of tests with the implemented control strategy. The benchmark should be further developed and tested.

scholarly journals Research on Weapon Target Allocation of Synthetic Detachment Considering Emergency Target

2021 ◽  
Vol 235 ◽  
pp. 03041
Author(s):  
Guangsheng Jiang ◽  
Xianming Shi ◽  
Mei Zhao ◽  
Yuan Li ◽  
Kang Li
Keyword(s):  
Objective Function ◽  
Control Strategy ◽  
Processing Speed ◽  
Great Influence ◽  
Allocation Model ◽  
Simulation Results ◽  
Target Allocation ◽  
Factor Function

In view of the problem of emergency target handling and reasonable attack in the combat process of synthetic detachment, this paper analyzes the main characteristics of emergency target, judges the threat degree of emergency target with “threat factor function”, and controls the output of the solution by solving the objective function of “threat factor function”, so as to ensure that the emergency target with great influence can be handled quickly. By improving the weapon target allocation model and using the solution control strategy, the simulation results show that this method can effectively improve the overall strike efficiency and the processing speed of emergency targets.

Study on the Control Strategy of PV-Energy Storage Microgrid Working in Islanded Mode

2014 ◽  
Vol 672-674 ◽  
pp. 79-85
Author(s):  
Kai Fang ◽  
Jian Lin Li ◽  
Dong Hui
Keyword(s):  
Energy Storage ◽  
Simulation Model ◽  
Control Strategy ◽  
Frequency Control ◽  
Constant Voltage ◽  
Constant Frequency ◽  
C Language ◽  
Pv Inverter ◽  
Islanded Mode ◽  
Simulation Results

This paper mainly discussed the control strategy of PV-energy storage microgrid that run in islanded mode , the PV inverter and the energy storage inverter use constant power control and constant voltage and constant frequency control respectively,with such a control strategy to ensure the microgrid in islanded mode supply the load stably. To verify the proposed theory,built the simulation model on the Simulink platform.In order to facilitate the parameters modification and improve the speed of the simulation,PQ controller was programmed by C language and embedded in the Simulink platform.Through the analysis of the simulation results,proved that the correctness and validity of the control strategy.

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