Study on pre-acceleration characteristics of servo motor applied on stamping die cushion

<em>The process of folding clothes is one of the activities carried out in the laundry business or household. The activity is fairly easy but many people are still lazy to do it. As a result, clothes that have been washed will fall apart in certain rooms, thereby reducing the aesthetic value of a home. Semi Automatic T-Shirt Folding Machine is the right solution to make folding clothes easier and more time efficient. This tool is equipped with a servo motor that moves the folding board that has been designed in such a way that the user only needs to manghandle the shirt just once and simply push one button then the shirt will fold itself and will be neatly arranged through the clothes stacker board. The PID method is applied to DC motors that move under the clothes folder so that the buildup of clothes underneath will not be pressured upward when the clothes are piled up when they are folded. Ultrasonic sensor will measure the right height between the clothes with the door opening the stacking clothes with kp = 1, ki = 0.1, kd = 0.5 for thin clothes and kp = 5, ki = 1, kd = 2.5 for thick clothes so that the movement of the motor can adjust its speed . This tool can fold one shirt in 16.83 seconds 11 seconds faster than folding clothes manually</em>

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Research on High-Speed Cutting of Cr12MoV Hardened Steel - A Review

Recent Patents on Engineering ◽

10.2174/1872212115999201201111251 ◽

2020 ◽

Vol 15 ◽

Author(s):

Fei Sun ◽

Guohe Li ◽

Qi Zhang ◽

Meng Liu

Keyword(s):

High Speed ◽

Cutting Temperature ◽

High Hardness ◽

High Strength ◽

Hardened Steel ◽

Parameters Optimization ◽

Future Research ◽

High Speed Machining ◽

Machined Surface ◽

Stamping Die

: Cr12MoV hardened steel is widely used in the manufacturing of stamping die because of its high strength, high hardness, and good wear resistance. As a kind of mainstream cutting technology, high-speed machining has been applied in the machining of Cr12MoV hardened steel. Based on the review of a large number of literature, the development of high-speed machining of Cr12MoV hardened steel was summarized, including the research status of the saw-tooth chip, cutting force, cutting temperature, tool wear, machined surface quality, and parameters optimization. The problems that exist in the current research were discussed and the directions of future research were pointed out. It can promote the development of high-speed machining of Cr12MoV hardened steel.

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Pulse-Width Modulated Amplifier for DC Servo System and Its Matlab Simulation

The Open Electrical & Electronic Engineering Journal ◽

10.2174/1874129001509010625 ◽

2015 ◽

Vol 9 (1) ◽

pp. 625-631

Author(s):

Ma Xiaocheng ◽

Zhang Haotian ◽

Cheng Yiqing ◽

Zhu Lina ◽

Wu Dan

Keyword(s):

Mathematical Model ◽

Transfer Function ◽

Input Signal ◽

Pulse Width ◽

Rotation Speed ◽

Servo Motor ◽

Matlab Simulation ◽

Pulse Width Modulated ◽

Signal Changes ◽

The Relationship

This paper introduces a mathematical model for Pulse-Width Modulated Amplifier for DC Servo Motor. The relationship between pulse-width modulated (PWM) signal and reference rotation speed is specified, and a general model of motor represented by transfer function is also put forward. When the input signal changes, the rotation speed of the servo motor will change accordingly. By changing zeros and poles, transient performance of this system is discussed in detail, and optimal ranges of the parameters is recommended at the end of discussion.

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Dynamic and Positioning Performances of Linear Electromechanical Actuator

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.809-810.682 ◽

2015 ◽

Vol 809-810 ◽

pp. 682-687

Author(s):

Vasile Nasui ◽

Mihai Banica ◽

Dinu Darabă

Keyword(s):

Dynamic Characteristics ◽

Practical Importance ◽

Correct Identification ◽

Positioning System ◽

Positioning Error ◽

Servo Motor ◽

Positioning Accuracy ◽

Electromechanical Actuator ◽

Initial Errors ◽

Selection For

This paper presents the dynamic characteristics and the proposed positioning performance of the system to them investigated experimentally. In this research, we developed the positioning system and we evaluated positioning accuracy. The developed system uses a servo motor for motion actuation. In this paper, we focused on studying the dependency of the positioning error – elementary errors – the position of the conducting element for the mechanism of the transformation of the rotation translation movement, representatively the mechanism screw – screwdriver and on emphasizing the practical consequences in the field of design, regulation and exploitation of the correct identification of all the initial errors in the structure of the mechanism, their character and the selection for an ultimate calculus of these which are of a real practical importance.

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