Strategies and Calculation Methods for Automotive Powertrain Motion Control under Quasi-Static Loads

Shangguan, Wen‐Bin; Hou, Zhichao

doi:10.1243/09544070jauto188

Cited by 14 publications

(18 citation statements)

References 10 publications

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“…In the design optimization of PMS, the six modes of the PMS should be decoupled to achieve the best vibration reduction performance. 6,11,39 When the powertrain vibrates at a natural frequency ( f i ), the mode kinetic energy decoupling rate in the k ( k = 1 , 2 , … , 6 ) DOF of the powertrain is calculated by 39…”

Section: Simulations and Discussionmentioning

confidence: 99%

A condensed dynamic model of a heavy-duty truck for optimization of the powertrain mounting system considering the chassis frame flexibility

Tan

Chen

Liao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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The existing powertrain mounting models of the heavy-duty truck for optimizing the mounts parameters cannot well describe the deformation of the chassis frame. To overcome this disadvantage, a new full vehicle model is proposed which embraces the view of system modeling and includes the frame flexibility. The model can achieve optimal parameters of the Powertrain Mounting System for isolating the vibration transmitted from the powertrain to the chassis. A model reduction technique, improved reduced system, is used to obtain a reduced model of the frame to represent its original large-scale finite element analysis model for the accessibility of time-efficient solutions of the model. The reduced frame model is integrated with the powertrain mounting and suspension model to form the full dynamic model of the vehicle. The accuracy and effectiveness of the proposed model are evaluated by its original vehicle model built in software ADAMS and an existing rigid model with rigid foundation. A hybrid model optimization strategy is also presented to tune the dynamic parameters of the powertrain mounts using the developed coupling model. The simulation results show that the proposed coupling model has better representation of the dynamic characteristics of the real vehicle system, and the presented hybrid model optimization strategy can obtain better optimization results compared with the existing rigid model with rigid foundation. In addition, the application of the proposed model can also be extended to the vibration control and the structural fatigue prediction.

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Section: Simulations and Discussionmentioning

confidence: 99%

A condensed dynamic model of a heavy-duty truck for optimization of the powertrain mounting system considering the chassis frame flexibility

Tan

Chen

Liao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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show abstract

“…The design philosophies for a PMS with four- and six-cylinder engine 1,5,7 are the requirements for natural frequencies and modal energies of powertrain rigid body mode, and motion control of CoG for the powertrain. These philosophies are also applicable to a PMS with a three-cylinder engine.…”

Section: Balance Methods For a Three-cylinder Enginementioning

confidence: 99%

“…From published papers about the design of a powertrain mounting system (PMS), design philosophies are divided into two categories: one on the subsystem level and the other on the vehicle level. The design philosophy based on the subsystem level [5][6][7][8][9][10][11][12] is based on requirements for natural frequencies of rigid body modes of the powertrain and the modal energy distribution corresponding to each frequency, and those for minimizing forces transmitted to the base. In modeling of a PMS, assumptions are that the powertrain is modeled as a rigid body and one end of the mounts is connected to the rigid [7][8][9][10][11][12] or flexible 13,14 ground.…”

Section: Introductionmentioning

confidence: 99%

A study on optimization method of a powertrain mounting system with a three-cylinder engine

Liu

Shangguan

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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Compared with unbalance forces and moments of four- and six-cylinder engines, forces and moments applied to the engine block from a three-cylinder engine are large and the mechanism for balancing the unbalance forces are complex. So design of a mounting system for the powertrain with a three-cylinder engine is more challenging. This paper presents the analytical methods for obtaining the unbalance forces and moments applied to the engine block for a three-cylinder engine with or without balance measures, and develops a design methodology for the Powertrain Mounting System with a three-cylinder engine. The unbalance forces and moments generated by cylinders, crank and connecting rod mechanisms and applied to the engine block are analyzed firstly. Then, three balance methods for reducing the forces and moments applied to the engine block are proposed and discussed. Three balance measures are described and analyzed. The methods for estimating forces and moments applied to the engine block under the three balance measures are developed and compared. Thirdly, an optimization method is proposed to estimate mount stiffness based on minimization of mount forces transmitted to the car body or sub-frame, along with meeting requirements for placing natural frequencies of the powertrain in prescribed ranges and those for maximizing modal energy distributions of the powertrain in six directions. An example is given to validate the calculation methods and design philosophy for the mounting system of a powertrain with a three-cylinder engine.

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“…The relation between force (or torque) and displacement (or angle) for a bushing in one direction of its LCS is usually nonlinear and can be simplified as piecewise linear at five ranges as in our previous studies for modeling an engine mount. 15 Figure 3 shows the piecewise linearity at five ranges. The force (or torque) versus displacement (or angle) relation in Figure 3 is described as…”

Section: Modeling Of a Bushingmentioning

confidence: 99%

A calculation method of joint forces for a suspension considering nonlinear elasticity of bushings

Tang

Shangguan

Dai

2012

Proceedings of the Institution of Mechanical Engineers, Part K:

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The forces and/or moments applied to a ball joint and a bushing in one suspension are important loads for the design or fatigue tests of control arms, trailing bars and steering knuckles. Taking a double wishbone suspension as one studying example, a modeling and calculation method for obtaining the forces applied to the ball joints and the bushings, and moments applied to the bushings are proposed and developed in this article. In modeling of a suspension, a bushing is modeled with three translational stiffness and three torsional stiffness along and around three orthogonal axes. The force (moment) versus displacement (angle) along (around) one axis is nonlinear and is simplified as piecewise linear at five sections. The joint forces and moments for ball joints and bushings of a double wishbone suspension system are calculated with the proposed method in this article, and compared with that obtained using two conventional methods (method I and method II) when a vehicle runs in typical and extreme driving conditions. Conventional method I simplifies the connections between the control arm and body as rigid link. Conventional method II assumes that the control arm links with the body using bushings, in which the bushings are modeled as three linear stiffness along three orthogonal axes. The calculation and comparison demonstrate that the bushing nonlinear and rotational stiffness must be modeled for precise calculation of ball joint force and moments, especially when a vehicle runs in extreme driving conditions.

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Strategies and Calculation Methods for Automotive Powertrain Motion Control under Quasi-Static Loads

Cited by 14 publications

References 10 publications

A condensed dynamic model of a heavy-duty truck for optimization of the powertrain mounting system considering the chassis frame flexibility

A condensed dynamic model of a heavy-duty truck for optimization of the powertrain mounting system considering the chassis frame flexibility

A study on optimization method of a powertrain mounting system with a three-cylinder engine

A calculation method of joint forces for a suspension considering nonlinear elasticity of bushings

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