scholarly journals Force Amplification Mechanism for Increased Stroke and Speed Responses of Piezoelectric Stick-Slip Miniaturized Linear Motor

Proceedings ◽  
2020 ◽  
Vol 64 (1) ◽  
pp. 17
Author(s):  
Hussam Kloub
Keyword(s):  
Mechanical System ◽  
Linear Motor ◽  
System Model ◽  
Stick Slip ◽  
Mechanical Advantage ◽  
Output Displacement ◽  
Maximum Expansion ◽  
Preliminary Results ◽  
Mode Configuration ◽  
Amplification Mechanism

In this paper, a mechanical system model based on Simulink software was developed for a proposed design for a stick-slip motor. Only the orientation of a cubic PZT element identifies the mode configuration of the motor. The preliminary results showed that force amplification mode exhibited roughly five times more speed, at one-hundred times more loading force, compared to the displacement amplification mode. Interestingly, when the output displacement was compared to maximum expansion of mechanical advantage mechanism, then the force amplification mode showed displacement amplification.

scholarly journals Initially Clamped Piezoelectric Inchworm Linear Motor Design Based on Force Amplification Mechanisms for Miniaturized and Large Force Actuation Applications

Proceedings ◽  
2020 ◽  
Vol 64 (1) ◽  
pp. 12
Author(s):  
Hussam Kloub
Keyword(s):  
Dynamic Response ◽  
Mechanical System ◽  
Structural Design ◽  
Linear Motor ◽  
System Model ◽  
Model Based ◽  
Large Force ◽  
Motor Design ◽  
The Moment ◽  
Design Challenges

In this paper, a novel monolithic structural design of a piezoelectric (PZT) inchworm motor utilizing three force amplification mode (FAM) mechanisms is presented as an approach to overcome the design challenges of common PZT inchworm motors. A mechanical system model based on Simulink software was developed for a proposed inchworm motor design. The dynamic response of the motor was simulated at the moment of releasing the pre-stressed mechanism. The results showed a backlash response due to the mass acceleration of the mechanisms.

Study and Simulation on Truck Front Suspension Using ADAMS

2013 ◽  
Vol 433-435 ◽  
pp. 2235-2238
Author(s):  
Wei Ning Bao
Keyword(s):  
System Dynamics ◽  
Mechanical System ◽  
Steering System ◽  
Front Wheel ◽  
System Model ◽  
Simulation Test ◽  
Front Suspension ◽  
Body Dynamics ◽  
Wheel Alignment ◽  
Multi Body

The mechanical system dynamics software,ADAMS,is used to establish multi-body dynamics system model for a truck front suspension and steering system. Through the simulation test of wheel travel, front wheel alignment parameters changing along with the wheel travel was obtained.

Design and experiment of a jetting dispenser with compact amplifying mechanism and low stress in piezostack

2020 ◽  
Vol 31 (5) ◽  
pp. 788-798
Author(s):  
Lingyun Wang ◽  
Xiang Huang ◽  
Siying Lin ◽  
Zhenxiang Bu ◽  
Hang Jin ◽  
...  
Keyword(s):  
Internal Stress ◽  
Droplet Diameter ◽  
Experimental System ◽  
Microelectronic Packaging ◽  
Element Analysis ◽  
Output Displacement ◽  
The Finite Element Analysis ◽  
Working Principle ◽  
Amplification Mechanism ◽  
Compact Design

This article introduced a piezostack-driven jetting dispenser for a microelectronic packaging process. The dispenser had a compact displacement amplification module using two piezostack actuators for achieving compact design and maintaining high jetting performance and improving internal stress on the piezostack actuators. In this article, a working principle of a jetting dispenser configuration was introduced and was followed by the presentation of a displacement amplification mechanism using a cylindrical pivot. The dimensions of the amplification mechanism were determined based on a theoretical calculation of the system and the finite element analysis results. The internal stress of the piezostack and the output displacement of the dispenser were investigated at different operational frequencies. The experimental system with the jetting dispenser was manufactured, and the system performance was verified experimentally. For evaluating the performance, a mixed glycerol/ethanol was used for the dispensing fluid. The jetting system in this study achieved an ideal jetting performance at a jetting frequency of 350 Hz and a droplet diameter of 0.42 mm.

A control strategy for electro-magneto-mechanical system based on virtual system model

2016 ◽  
Vol 30 (9) ◽  
pp. 4075-4081
Author(s):  
Hong-youn Kim ◽  
Young-min Yun ◽  
Hoon Heo
Keyword(s):  
Mechanical System ◽  
Control Strategy ◽  
System Model ◽  
Virtual System

scholarly journals Stability of PDF Controller With Stick-Slip Friction Device

1997 ◽  
Vol 119 (3) ◽  
pp. 486-490 ◽  
Author(s):  
Jia-Yush Yen ◽  
Chih-Jung Huang ◽  
Shu-Shung Lu
Keyword(s):  
Control Algorithm ◽  
Controller Design ◽  
System Model ◽  
Pole Placement ◽  
Order System ◽  
Stick Slip ◽  
Precision Control ◽  
Experimental Works ◽  
The Stability ◽  
Control Accuracy

This paper presents the precision control of drive devices with significant stick-slip friction. The controller design follows the Pseudo-Derivative Feedback (PDF) control algorithm. Using the second order system model, the PDF controller offers arbitrary pole placement. In this paper, the stability proof for the controller with stick-slip friction is presented. On the basis of this proof, the stability criteria are derived. The paper also includes both the computer simulation and the experimental works to confirm the theoretical result. The experiments conducted on a Traction Type Drive Device (TTDD) shows that control accuracy of as high as ±1 arc – second is achieved.

Biomechanical pregnant pelvic system model and numerical simulation of childbirth: impact of delivery on the uterosacral ligaments, preliminary results

2014 ◽  
Vol 26 (4) ◽  
pp. 497-504 ◽  
Author(s):  
J. Lepage ◽  
C. Jayyosi ◽  
P. Lecomte-Grosbras ◽  
M. Brieu ◽  
C. Duriez ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
System Model ◽  
Preliminary Results ◽  
Uterosacral Ligaments

A Novel Evaluation Method on the Precision of Linear Motor Feed System in High-Speed Machine Tools

2016 ◽  
Vol 836-837 ◽  
pp. 220-227 ◽  
Author(s):  
Xiao Jun Yang ◽  
Yan Li ◽  
Cheng Fang Ma ◽  
Dun Lv ◽  
Jun Zhang ◽  
...  
Keyword(s):  
Mechanical System ◽  
Machine Tools ◽  
High Speed ◽  
Evaluation Method ◽  
Linear Motor ◽  
Feed System ◽  
Dynamic Precision ◽  
Transmission Structure ◽  
Accuracy And Repeatability ◽  
High Speed Machine

The linear motor feed system can realize high-precision motion with high-speed and high-acceleration, which has a broad application in high-speed machine tools. In its unique zero transmission structure, the motor is connected directly with the mechanical system. The thrust harmonics and other disturbances act on the motor mover directly, which makes the tracking fluctuation more prominent. The traditional accuracy and repeatability of positioning cannot reflect the precision of the linear motor feed system in the process of high-speed movement. In this paper, a novel precision evaluation method which takes the dynamic precision as the index is proposed for the linear motor feed system in high-speed machine tools. The performance and precision of linear motor feed system are evaluated by the transient error, steady-state follow error and tracking fluctuation, respectively. Then the servo control model is established oriented to dynamic precision. The influences of NC instructions, servo system and mechanical system on the dynamic precision are discussed. It can be obtained that this new evaluation method on the precision can evaluate systematically the performance of the linear motor feed system in high-speed machine tools. Meanwhile it can reveal efficiently main factors which lead to the decline of dynamic precision and propose effective improvement methods.

Analysis the Displacement Amplification of Compliant Parallel Four-Bar Using Piezo Actuator

2012 ◽  
Vol 155-156 ◽  
pp. 201-205
Author(s):  
Xue Feng Yang ◽  
Wei Li ◽  
Yu Qiao Wang
Keyword(s):  
Finite Element ◽  
Random Sequence ◽  
Element Model ◽  
Piezo Actuator ◽  
Theory Theory ◽  
Preisach Model ◽  
Output Displacement ◽  
Amplification Ratio ◽  
Beam Displacement ◽  
Amplification Mechanism

This paper researched the displacement amplification and hysteresis of parallel four-bar amplification mechanism using piezo actuator. Firstly, the displacement amplification was analyzed by employing the material bending theory. Theory and finite element model (FEM) proved that the amplification ratio of parallel four-bar mechanism is only related to the position of driving point and the guiding beam displacement is linear with the driving point input when it is fixed. Then the Preisach model was employed to model the hysteresis of guiding beam and performed to control the output displacement of the mechanism. Experiments proved that the model can effectively improve the output displacement accurate of the guiding beam and can realize random sequence output displacement using the Preisach interpolation surface.

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