Compound Velocity Synchronizing Control Strategy for Electro-Hydraulic Load Simulator and Its Engineering Application

Han, Songshan; Zhang, Jiao; Yao, Jianyong

doi:10.1115/1.4026921

Cited by 27 publications

(16 citation statements)

References 12 publications

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“…On the other hand, the bearing object is the exhaust valve, which has a certain motion curve, the load simulator needs to follow the valve passively for linear motion. Therefore, the electric load linear simulator was selected as the load device to implement gas force on the exhaust valve under semi-physical conditions by comparing the advantages and disadvantages of different load simulators, as shown in Table 1 [17][18][19][20]. The schematic diagram of the electric load simulator is shown in Figure 1.…”

Section: System Configurationsmentioning

confidence: 99%

An Electric Load Simulator for Engine Camless Valvetrains

et al. 2019

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Camless valvetrains have become a promising direction to improve the performance of internal combustion engines. In this paper, an electric load simulator is proposed to simulate and implement gas force on the exhaust valve for camless valvetrains under semi-physical conditions. According to test data, the 1D gas-dynamic model was established to get boundary conditions and initial values for 3D finite element simulation. The 3D finite element simulation model was solved to obtain the gas force characteristics of the exhaust valve for camless valvetrains. The electromagnetic actuator was designed according to the system scheme and performance requirements of the electric load simulator. The PID (Proportion Integration Differentiation) algorithm was designed to control the output force of the electric load simulator and reproduce the gas force characteristics of the exhaust valve. It was found that the output force of the electric load simulator could follow the variation of the target gas force and meet the performance requirements of the electric load simulator based on simulation results and experimental results.

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Section: System Configurationsmentioning

confidence: 99%

An Electric Load Simulator for Engine Camless Valvetrains

et al. 2019

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“…Grinding torque T f can be obtained based on the component force F v : Fig. 5 Dual-driven crank torsional deformation [12][13][14] …”

Section: Rotation Angle Error Of the Crankshaft Rotation Axis Synchromentioning

confidence: 99%

Research on the influences of torsional deformation on contour precision of the crank pin

Qian

et al. 2015

Adv. Manuf.

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The span and length to diameter ratio of the large-scale crankshaft are big, and the structure and the distribution of crank pins are complex. Thus it is easier for crankshaft to generate biggish torsional deflection which finally influences the contour precision of the crank pin in tangential point tracing grinding. Based on the analyses of force and torsional deformation of the crankshaft under different crankshaft driving modes of the headstock and the tailstock, the relationship between torsional deformation and rotation angle error of the crankshaft in tangential point tracing grinding is discussed in this paper. According to crankshaft rotational motion and wheel frame coordinated motion in tangential point tracing grinding, contour error of the crank pin caused by torsional deflection is established under different crankshaft driving modes. The simulation results show that minimum contour error of the crank pin can be obtained when crankshaft is synchronously driven by both the headstock and the tailstock, and speed error does not exist in tangential point tracing grinding.

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“…Karpenko [30] proposed a nonlinear QFT controller to desensitize the control loop to actuator's dynamic uncertainties caused by system nonlinearities and typical variations of actuator parameters, and auxiliary compensation filters were also designed to further shape the reference tracking and regulating responses. In [31], a new velocity synchronization strategy using control voltage of the disturbance system and the feedback torque signal was discussed, and selection rules of compensation parameters for engineering application were proposed.…”

Section: Introductionmentioning

confidence: 99%

Real-time nonlinear adaptive force tracking control strategy for electrohydraulic systems with suppression of external vibration disturbance

Zhu

Shen

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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Electrohydraulic system (EHS) is extensively utilized in experimental testing field for exerting forces on specimen, and in many occasions, force tracking of EHS is confronted with external motion disturbance, which seriously deteriorates the force tracking performance. To address this problem, a real-time nonlinear adaptive force control strategy is developed in this paper. On the basis of the established nonlinear model for EHS, the proposed nonlinear adaptive force controller is obtained by a recursive backstepping method, where both servo-valve nonlinearity and parametric uncertainties of general electrohydraulic systems are accounted for during the controller design procedure. The first advantage for the proposed controller lies in the fact that the actuator's vibration disturbance information is utilized to serve the purpose of accurate force tracking. Besides, parametric uncertainties are effectively handled by the developed online adaptive updating law to achieve a higher force replication performance. Moreover, rigorous Lyapunov stability of the proposed controller is guaranteed. Finally, comparative experiments are implemented on a uniaxial EHS through xPC/Target rapid prototyping technique, and the relevant results validate the feasibility of the developed controller.

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Compound Velocity Synchronizing Control Strategy for Electro-Hydraulic Load Simulator and Its Engineering Application

Cited by 27 publications

References 12 publications

An Electric Load Simulator for Engine Camless Valvetrains

An Electric Load Simulator for Engine Camless Valvetrains

Research on the influences of torsional deformation on contour precision of the crank pin

Real-time nonlinear adaptive force tracking control strategy for electrohydraulic systems with suppression of external vibration disturbance

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