scholarly journals Nonlinear Compound Control for Nonsinusoidal Vibration of the Mold Driven by Servo Motor with Variable Speed

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Qiang Li ◽  
Yi-ming Fang ◽  
Jian-xiong Li ◽  
Zhuang Ma
Keyword(s):  
Control Method ◽  
Controller Design ◽  
Rotation Speed ◽  
Pi Control ◽  
Variable Speed ◽  
Servo Motor ◽  
Motor Speed ◽  
Vector Method ◽  
Compound Control ◽  
The Relationship

In this paper, a fuzzy PI control method based on nonlinear feedforward compensation is proposed for the nonsinusoidal vibration system of mold driven by servo motor, rotated in single direction with variable speed. During controller design, there are mainly two issues to consider: (i) nonlinear relationship (approximate periodic function) between mold displacement and servo motor speed and (ii) uncertainties caused by backlash due to motor variable speed. So, firstly, the relationship between mold displacement and motor rotation speed is built directly based on the rotation vector method. Then, an observer is designed to estimate the uncertainties and feedforward compensation. Secondly, as the motor rotates in single direction with variable speed, a fuzzy control with bidirectional parameter adjustment is adopted to improve rapidity and stability based on the traditional PI method. Finally, some simulation results show the effectiveness of the proposed control method.

An Improved Sliding Mode Control Method and its Application

2012 ◽  
Vol 200 ◽  
pp. 459-461
Author(s):  
Jian Zhu ◽  
Chang Fan Zhang ◽  
Mao Zhen Cui ◽  
Gang Huang
Keyword(s):  
Motor Control ◽  
Control Method ◽  
Sliding Mode ◽  
Variable Speed ◽  
Servo Motor ◽  
Motor Speed ◽  
Reaching Law ◽  
Speed Range ◽  
Packaging Industry ◽  
Simulation Results

With the shaftless driving technology used in the packaging industry,servo motor control has become increasingly demanding. Beginning with the reasons of chattering, this article proposes a new sliding mode reaching law,adding a power attenuation term in front of the variable speed item,and then affects the shaftless gravure package printing chromatography system with PMSM as the actuator, improved servo motor speed range and efficency of the shaftless driving system.At last,the simulation results indicate the effectiveness of the proposed approach.

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

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.

scholarly journals Functioning conditions of the Casale pumping station in Mantova, Italy

2014 ◽  
Vol 7 (1) ◽  
pp. 151-168
Author(s):  
C. Capponi ◽  
M. Ferrante ◽  
M. Pedroni ◽  
B. Brunone ◽  
S. Meniconi ◽  
...  
Keyword(s):  
Rotation Speed ◽  
Variable Speed ◽  
Pumping Station ◽  
Polynomial Curves ◽  
Model Based ◽  
Cubic Polynomial ◽  
The Relationship ◽  
Analyze Data

Abstract. This paper aims to analyze data provided by TeaAcque for Casale pumping station in Mantova, Italy. A~model based on the affinity laws is used to simulate the behavior of the Casale pumping station where variable speed pumps (VSPs) are installed. Quadratic and cubic polynomial curves are used to fit the pump data given by the affinity laws. Such curves can be used to predict the efficiency when the functioning conditions change. The relationship between the variation in the rotation speed and the efficiency is also derived.

scholarly journals Research on New Energy Grid Control Technology

2018 ◽  
Vol 53 ◽  
pp. 01003
Author(s):  
LU Zhengtong ◽  
LI Shiqiang ◽  
WU Yingjun ◽  
SUN Lu ◽  
CHEN Guozhi ◽  
...  
Keyword(s):  
Control Strategy ◽  
Control Method ◽  
Harmonic Distortion ◽  
Pi Control ◽  
Nonlinear Load ◽  
Compound Control ◽  
New Energy ◽  
Energy Grid ◽  
Distortion Rate

Aiming at the poor waveform quality of the new energy grid connected under the traditional PI control strategy, based on the theory of repetitive control method, a compound control trategy is proposed. Through the analysis of the compound control module and simulation, the results show that grid harmonic distortion rate can be reduced about 2% at the same nonlinear load, the compound control strategy can suppress the load disturbance signal effectively, and the simulation results demonstrate the effectiveness of the proposed method.

Continuous Rotary Motor Electro-Hydraulic Servo System Based on Discrete Sliding Mode Controller

2010 ◽  
Vol 156-157 ◽  
pp. 1537-1540 ◽  
Author(s):  
Xiao Jing Wang ◽  
Jun Peng Shao ◽  
Ji Hai Jiang
Keyword(s):  
Control Method ◽  
Sliding Mode ◽  
Tracking Error ◽  
Servo System ◽  
Mathematic Model ◽  
Sliding Mode Controller ◽  
Servo Motor ◽  
Compound Control ◽  
Hydraulic Servo ◽  
Rotary Motor

In order to suppress the periodic interference of continuous rotary electro-hydraulic servo motor, make the motor tracking periodic signals more accurate, and improve the influence of friction interference on the performance of continuous rotary electro-hydraulic servo motor, mathematic model of continuous rotary motor electro-hydraulic position servo system was established, and the compound control method based on the discrete sliding mode controller was adopted to suppress the friction interference. Through the simulation, the result confirms that the discrete sliding mode controller decreases the tracking error of the system, increases the system robust performance and improves performance of continuous rotary electro-hydraulic servo motor. This method is simple and feasible.

Comparative Analysis and Controller Design for BLDC Motor Using PID and Adaptive PID Controller

2021 ◽  
Vol 14 (6) ◽  
pp. 671-682
Author(s):  
Supriya Kaul ◽  
Nitesh Tiwari ◽  
Shekhar Yadav ◽  
Awadhesh Kumar
Keyword(s):  
Comparative Analysis ◽  
Pid Controller ◽  
Controller Design ◽  
Speed Control ◽  
Initial Speed ◽  
Bldc Motor ◽  
Variable Speed ◽  
Motor Speed ◽  
Large Variability ◽  
Applied Torque

: This paper describes the Adaptive PID (APID) controller design for speed control preference of Brushless Direct Current (BLDC) motor over the Proportional Integrative Derivative (PID) controller. A methodology of the Adaptive PID controller is proposed, which tunes the parameters automatically. Modeling of the BLDC motor was carried out using PID and Adaptive PID controller, respectively. The behavior of the BLDC motor is analyzed without a controller and by using the conventional PID controller and the new APID controller. Hence the result obtained is analyzed and compared by taking two cases. In the first case of constant speed, the PID controller gave large variability in the initial speed and could not track the desired speed. Also, applied torque could not track the desired speed due to a significant deviation in the actual motor speed. Whereas, in the case of APID, the controller gave small variability in the initial speed and could track the desired motor speed. In the second case of variable speed, the PID controller produced a random response at a variable speed. Whereas, in APID, the controller had an accurate response at variable speed, with no deviation. The result obtained shows that the APID controller provides effective, easier, and fast controlling of the BLDC motor. The output response of the BLDC motor is achieved, and the result is analyzed with the help of utilizing MATLAB and SIMULINK. Background: The BLDC motor is considerably used in the home, transportation, and industrial application. Objective: Comparative analysis of modeling and control of BLDC motor drives for the variable required speed. Method: PID and APID controllers are used in this paper to operate the BLDC motor. Results: A Fixed and variable speed response of both APID and PID controlled BLDC motor is obtained. Conclusion: Response of the speed control of APID controlled BLDC motor is superior to PID controlled BLDC motor at variable speed.

scholarly journals Functioning conditions of the Casale pumping station in Mantova, Italy

2014 ◽  
Vol 7 (2) ◽  
pp. 93-97 ◽  
Author(s):  
C. Capponi ◽  
M. Ferrante ◽  
M. Pedroni ◽  
B. Brunone ◽  
S. Meniconi ◽  
...  
Keyword(s):  
Rotation Speed ◽  
Input Power ◽  
Variable Speed ◽  
Discharge Data ◽  
Pump Speed ◽  
Pumping Station ◽  
Polynomial Curves ◽  
Model Based ◽  
Cubic Polynomial ◽  
The Relationship

Abstract. Pump speed, input power, pressure and discharge data are analyzed for evaluating functioning conditions of Casale pumping station in Mantova, Italy, managed by TeaAcque. A model based on the affinity laws is used to simulate the behavior of the installed variable speed pumps. Quadratic and cubic polynomial curves are used to fit the pump data given by the affinity laws. Such curves allow predicting the efficiency when the functioning conditions change. The relationship between the rotation speed and the efficiency is also derived.

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