Design and performance analysis of a novel parallel servo press with redundant actuation

He, Jun; Gao, Feng; Zhang, Dan

doi:10.1007/s10999-013-9237-7

Cited by 8 publications

(5 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So, the slider position is parameterized by input u. From equations (11) and (15), the equation of s was deduced, and it has four different solutions. After samples calculation, the final result is described as follow.…”

Section: Position Analysismentioning

confidence: 99%

“…Generally, the parallel servo press can avoid the over-constraint and interference problem by changing the pose of moving platform. 15 The parallel mechanism working force on ram can be dispersed into multi-linkages. 16 But the motors worked in non-rigid connection.…”

Section: Introductionmentioning

confidence: 99%

“…Guo and Gao 13 and Bai et al 14 proposed several multiactuated servo presses with parallel topology. He et al 15 proposed a redundant actuation parallel servo press which proposed a way to solve the multi motors run out of sync. Generally, the parallel servo press can avoid the over-constraint and interference problem by changing the pose of moving platform.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design and analysis of a novel seven-bar mechanical servo press with dual motors inputs

Liu

Zhao

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

This paper proposes a novel high capacity servo press system with two servo motor inputs and high ratio force amplifier mechanism for metal forming. First, the press structure was expressed. The force amplifier was made of seven-bar mechanism which possesses quick-return character and high ratio force amplifier. The symmetric structure balanced the force in horizontal direction, and dispersed the forces on two transmission routes. In theoretical study of the new structure, kinematic and dynamic analyses were obtained by examining the geometry of the structure. The performance of press was discussed by example demonstration. Finally, the kinematic experiments and metal forming experiments were carried out on the prototype machine by using grating scale system. The measured data match the theoretical calculation well, which validates the feasibility of this new press mechanism.

show abstract

Section: Position Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design and analysis of a novel seven-bar mechanical servo press with dual motors inputs

Liu

Zhao

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…One possible method is to use actuation redundancy. 34,35 One redundant 2R3T P PM can be constructed by using five-bar planar mechanisms to extra actuate the revolute joints at B 2 , B 3 and B 4 as mentioned in Section 3.2. The relationship between κ x and α of the redundant 2R3T P PM in the same position is illustrated in Fig.…”

Section: Rotational Capability Analysismentioning

confidence: 99%

Novel 2R3T and 2R2T parallel mechanisms with high rotational capability

Wang

Fang

2015

Robotica

View full text Add to dashboard Cite

SUMMARYLarge rotational angles about two axes for parallel mechanisms (PMs) with two rotational and three translational (2R3T) degrees of freedom (DOFs) or two rotational and two translational (2R2T) DOFs are demanded in some industries, such as parallel machine tools and multi-axis 3D printing. To address the problem, this paper focuses on the structural synthesis of new 2R3T and 2R2T PMs with high rotational capability. First, two new moving platforms are proposed based on the concepts of decoupled and configurable design. By means of the proposed platforms and Lie group theory, a series of 2R2T and 2R3T PMs are synthesized. Then the inverse kinematics and velocity relationship of one of the synthesized 2R3T PMs are presented. Finally, the rotational capability of the same 2R3T PM is analyzed. The result shows that by means of actuation redundancy, the studied 2R3T PM indeed possesses the high rotational capability about two axes, even though interferences and singularities are taken into consideration.

show abstract

“…The magnitude and phase of actuation pulse is controlled by discrete time controller to achieve desired orientation of the drill bit on the basis of sampled state feedback. The solution provided by [1] is effective in controlling the orientation, The orientation control of fully actuated rotor, actuated through excitation of stator windings is a well-established technique [1][2][3][4][5]. However, in case of under-actuated to the amount of control force required and is unlimited.…”

Section: Introductionmentioning

confidence: 99%

Pulse Equivalent Area Based Orientation of a Class of Under- Actuated System under Constraints

Ali

Malik

2017

Mehran Univ. res. j. eng. technol.

View full text Add to dashboard Cite

A PEA (Pulse Equivalent Area) approach for orientation control of an under actuated pointing device is proposed. The presented work is a sequel to the earlier work done by the authors for the orientation control of the drill machine. The desired orientation is realized through control pulses during specific roll instants. These pulses are generated through single pair of electromagnets mounted on the housing of the pointing device. Due to practical limitation of the system, there is an additional constraint on the actuating signal. The amplitude of the actuating signal is fixed and the Pulse width or duration of the pulse can vary. A discrete equivalent model of pointing device is also developed. A novel approach based on PEA is developed since the exact solution of discrete equivalent model under constraints was not possible. The simulations are included to compare proposed technique with the existing technique developed for similar systems. The performance is also shown under both nominal and parameter variations through Monte Carlo simulations.

show abstract

Design and performance analysis of a novel parallel servo press with redundant actuation

Cited by 8 publications

References 20 publications

Design and analysis of a novel seven-bar mechanical servo press with dual motors inputs

Design and analysis of a novel seven-bar mechanical servo press with dual motors inputs

Novel 2R3T and 2R2T parallel mechanisms with high rotational capability

Pulse Equivalent Area Based Orientation of a Class of Under- Actuated System under Constraints

Contact Info

Product

Resources

About