An Interactive Design Method of Control System Using Least Mean Square Approximation

1984 ◽  
Vol 20 (8) ◽  
pp. 698-703
Author(s):  
Kageo AKIZUKI ◽  
Osamu YOSHIE ◽  
Tetsuya MASUISHI
Keyword(s):  
Control System ◽  
Design Method ◽  
Interactive Design ◽  
Mean Square ◽  
Least Mean Square

scholarly journals Active Pressure Ripple Reduction of a Self-Supplied Variable Displacement Pump with Notch Least Mean Square Filter

Micromachines ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 932
Author(s):  
Xiaochen Huang ◽  
Bing Xu ◽  
Weidi Huang ◽  
Haogong Xu ◽  
Fei Lyu ◽  
...  
Keyword(s):  
Control System ◽  
Active Control ◽  
Pressure Pulsation ◽  
Control Signal ◽  
Control Technique ◽  
Mean Square ◽  
Least Mean Square ◽  
Displacement Pump ◽  
Variable Displacement ◽  
Pressure Ripple

As the power sources in hydraulic systems, variable displacement axial piston pumps generate flow fluctuation. Unfortunately, it results in pressure pulsation which excites the system vibration and emitted noise. The majority of studies try to eliminate the pulsation via a passive technique and the active control methodology has not been discussed in detail. In this research, the feasibility of reducing the pressure ripple by properly controlling the proportional valve has been investigated, which also supports the miniaturization of the active control system. A mathematical model of the self-supplied variable displacement pump including the control system has been developed. The filtered-X least mean square algorithm with time-delay compensation is utilized to calculate the active control signal. Simulation results show the effectiveness of the active control technique. The effect of the active control signal on the flow rate from different chambers of the pump has been analyzed. It demonstrates that the variation of the pressure pulsation should be ascribed to the comprehensive reaction of different flow rates. The major reason is that the flow of the actuator piston neutralizes the peak value of the flow ripple, generated by the nine pistons.

Research of Quantum Algorithm for Adaptive Active Noise Control System

2012 ◽  
Vol 457-458 ◽  
pp. 196-201
Author(s):  
Wei Jiang
Keyword(s):  
Control System ◽  
Adaptive Algorithm ◽  
Noise Control ◽  
Active Noise Control ◽  
Quantum Algorithm ◽  
Adaptive Controller ◽  
Lms Algorithm ◽  
Mean Square ◽  
Least Mean Square ◽  
Active Noise

Adaptive active noise control based on least mean square (LMS) algorithm is a linear adaptive filter so that it cannot obtain desired noise reduction. Quantum algorithm is combined with noise control to form quantum adaptive controller. Quantum adaptive algorithm is discussed completely and noise control system is simulated in order to analyze the effects of noise control.

Application Plan for an Intelligent Façade and Interactive Design of Environment-Friendly Buildings

2013 ◽  
Vol 689 ◽  
pp. 18-21 ◽  
Author(s):  
Won Duck Seo ◽  
Kang Guk Lee
Keyword(s):  
Control System ◽  
Early Stage ◽  
Design Method ◽  
Interactive Design ◽  
High Tech ◽  
Indoor Climate ◽  
Climate Control ◽  
Environment Friendly ◽  
System 2 ◽  
New Skin

This study presents the application method of the intelligent facade and interactive design of environment-friendly buildings. The planning elements of the environment-friendly and intelligent skin design include (1) energy power generation system, (2) solar ray control system, (3) indoor climate control system, and environment-friendly buildings. An introduction for technologies relevant to these planning elements is yet to be explored in this early stage of the study. An introduction is presented for the new skin design method in response to the critical aspect and present era of facilitating high-tech equipment.

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