Multivariable predictive functional control of a compound power-split hybrid electric vehicle

2021 ◽  
pp. 095440702110466
Author(s):  
Ji Gao ◽  
Diming Lou ◽  
Tong Zhang ◽  
Liang Fang ◽  
Yunhua Zhang
Keyword(s):  
Hybrid System ◽  
Hybrid Electric Vehicle ◽  
Control Method ◽  
Multiple Input Multiple Output ◽  
Area Network ◽  
Control Effect ◽  
Decoupling Method ◽  
Input Multiple Output ◽  
Objective Control ◽  
Pure Delay

The Corun hybrid system (CHS) is a deeply coupled multiple-input–multiple-output (MIMO) hybrid system. The two inputs are the torques of the two motors. The two outputs are the carrier speed and transmission output torque. Using the traditional control method, the multi-objective control quality cannot be guaranteed because of the adopted static decoupling method and proportional–integral–derivative (PID) controllers. In this paper, the problems of the traditional control method are carefully analyzed, and a new control method is proposed. Instead of static decoupling, dynamic decoupling is adopted to improve the decoupling control effect. A predictive functional controller instead of a PID controller is adopted to deal with the pure delay caused by controller area network (CAN) communication. The tracking effect of the target value is further improved by predictive functional controllers. For the two decoupled subsystems, that is, the integral system and the second-order underdamped system, two predictive functional controllers are designed. The new control method was verified by simulations and tests. The results show that the new control method is superior to the traditional control method for CHS.

scholarly journals Performance analysis of IEEE 802.11ac based WLAN in wireless communication systems

2019 ◽  
Vol 9 (2) ◽  
pp. 1131 ◽  
Author(s):  
A. Z. Yonis
Keyword(s):  
Communication Systems ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Multiple Input Multiple Output ◽  
Local Area ◽  
Area Network ◽  
Data Rates ◽  
Input Multiple Output ◽  
Ieee 802.11Ac ◽  
5 Ghz

<p><span lang="EN-US">IEEE 802.11ac based wireless local area network (WLAN) is emerging WiFi standard at 5 GHz, it is new gigabit-per-second standard providing premium services. IEEE 802.11ac accomplishes its crude speed increment by pushing on three distinct measurements firstly is more channel holding, expanded from a maximum of 80 MHz up to 160 MHz modes. Secondly, the denser modulation, now using 256-QAM, it has the ability to increase the data rates up to 7 Gbps using an 8×8 multiple input multiple output (MIMO). Finally, it provides high resolution for both narrow and medium bandwidth channels. This work presents a study to improve the performance of IEEE 802.11ac based WLAN system.</span></p>

Some Advances in Energy Recycling Semiactive Vibration Suppression

2008 ◽  
Vol 56 ◽  
pp. 345-354 ◽  
Author(s):  
Junjiro Onoda
Keyword(s):  
Power Supply ◽  
Vibration Suppression ◽  
Control Method ◽  
Multiple Input Multiple Output ◽  
Piezoelectric Transducers ◽  
Vibrating Structures ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Self Powered ◽  
Shunt Circuit

This paper summarizes some studies performed by the author's group on energy-recycling semiactive vibration suppression using piezoelectric transducers embedded in the vibrating structures and shunted on switched inductive circuits. Basic idea of this method is to suppress the vibration by controlling the switch in the shunt circuit, which was first introduced by Richard C., et al. This idea has been upgraded by introducing (1) a multiple-input-multiple-output (MIMO) control method for the switches in the shunt circuits, (2) a self-sensing method to estimate the state of structure from the voltage across the piezoelectric transducer, so that any additional sensors can be neglected, and (3) a self-powered shunt circuit that performs the semiactive vibration suppression without any power supply. Several numerical and experimental results showed that the method works well against transient, sinusoidal, and random multi-modal vibrations and suppresses the vibrations effectively. It was also shown that the method is very robust, and, with it, the system is always stable. Studies for various applications of this method are also discussed.

AN ANALYSIS AND MIMO EXTENSION OF A DOUBLE EWMA RUN-TO-RUN CONTROLLER FOR NON-SQUARED SYSTEMS

2003 ◽  
Vol 10 (04) ◽  
pp. 417-428 ◽  
Author(s):  
RAMKUMAR RAJAGOPAL ◽  
ENRIQUE DEL CASTILLO
Keyword(s):  
Semiconductor Manufacturing ◽  
Control Method ◽  
Moving Average ◽  
Multiple Input Multiple Output ◽  
Processing Step ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Average Control ◽  
Controllable Factor ◽  
Weighted Moving Average

The double EWMA (exponentially weighted moving average) control method is a popular algorithm for adjusting a process from run to run in semiconductor manufacturing. Until recently, the dEWMA controller had been applied only for the single controllable factor (or input), single quality charcteristic (or output) case. Recently, Del Castillo and Rajagopal4 propose a multivariate double EWMA controller for squared multiple-input, multiple-output (MIMO) processes, where there is an equal number of inputs and outputs. This paper extends the MIMO dEWMA controller for non-squared systems. Two different MIMO dEWMA controllers are presented and their performance studied with application to a Chemical-Mechanical Polishing (CMP) process, a critical semiconductor manufacture processing step that exhibits non-linear dynamics.

scholarly journals Information Fusion Based Decoupling Control for Multivariable Nonlinear System

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Ziyang Zhen ◽  
Ju Jiang ◽  
Zhisheng Wang ◽  
Xinhua Wang
Keyword(s):  
Nonlinear System ◽  
Information Fusion ◽  
Control Method ◽  
Robot Manipulator ◽  
Multiple Input Multiple Output ◽  
Computational Cost ◽  
Decoupling Control ◽  
Future State ◽  
Coupled Channels ◽  
Input Multiple Output

A decoupling control method based on information fusion estimation for a nonlinear system is presented in the paper. For each main channel and its coupled channels of the system, according to the information fusion theorem, the estimation of the system future state is obtained by fusing the information of the desired output trajectory of the system. Furthermore, approximate optimal control rule is obtained by fusing the system future state information and the control energy soft constraint information. Then an information fusion based decoupling control (IFBDC) system is established for the nonlinear coupled multiple-input multiple-output systems. This system cannot only control every channel to track reference signals, but also control any channel to be decoupled with other channels. Finally, a robot manipulator system is given to investigate the effectiveness of the decoupling control strategy, analyze its key parameters, and analyze the computational cost. The simulation results show that the IFBDC method is characterized by adjustable decoupling degree and high control quality.

scholarly journals ADAPTIVE TRACKING CONTROL FOR TWIN ROTOR MULTIPLE-INPUT MULTIPLE-OUTPUT BASED ON ISS STABILIZATION

2016 ◽  
Vol 54 (5) ◽  
pp. 672
Author(s):  
Nguyen Van Chi
Keyword(s):  
Tracking Control ◽  
Control Method ◽  
Multiple Input Multiple Output ◽  
Adaptive Controller ◽  
Uncertain Parameters ◽  
Vertical Movements ◽  
Adaptive Tracking Control ◽  
Input Multiple Output ◽  
Cable Force ◽  
Twin Rotor

This paper proposes the angle tracking control method for Twin rotor multi-input multiple-output (TRMS) using the input-to-state stability theory (ISS) for nonlinear systems. To apply this theory, the model of TRMS is rewritten by an Euler-Lagrange forced model with uncertain parameters and input disturbances. The uncertain parameters are the potential energies depended on the mass of TRMS’parts and the input disturbances are considered the friction force, the flat cable force, the effects of the speed of the main rotor on the horizontal movement and the speed of tail rotor to the vertical movements. Using modificated model of TRMS, we design the adaptive controller for angle ISS stabilization to attenuate the influences of uncertain parameters and input disturbances to the angles of TRMS. The robustness of the closed system is shown by the the stabilization of the angles with the yaw and pitch external disturbances, the simulation and experimental results help to proof the rightness of proposed method.

A DUAL BAND MIMO DIELECTRIC RESONATOR ANTENNA FOR WLAN APPLICATION

2015 ◽  
Vol 77 (10) ◽  
Author(s):  
Nuramirah Mohd Nor ◽  
Mohd Haizal Jamaluddin
Keyword(s):  
Dielectric Resonator ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Multiple Input Multiple Output ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Dielectric Resonator Antenna ◽  
Multiple Input ◽  
Input Multiple Output

In this paper, a dual band multiple-input-multiple-output dielectric resonator antenna for wireless local area network application is presented. Two identical feeding techniques are used to feed the proposed antenna. The simulated impedance bandwidth for both port are the same which are 6.5% at 2.45 GHz and 3% at 5.2 GHz. The DRA also has an acceptable value of isolation over the operating frequency. The simulated S-parameter and other multiple-input-multiple-output parameters are studied and observed.

Individual Pitch Control for Load Reduction Based on Norm Theory

2013 ◽  
Vol 448-453 ◽  
pp. 1879-1883
Author(s):  
Ying Deng ◽  
Dan Zhang ◽  
Feng Zhou ◽  
De Tian
Keyword(s):  
Wind Turbine ◽  
Control Algorithm ◽  
Control Method ◽  
Multiple Input Multiple Output ◽  
Fatigue Load ◽  
Control Effect ◽  
Pitch Control ◽  
Norm Theory ◽  
Individual Pitch Control ◽  
Deflection Rate

As the capacity of wind turbine increases, unsteady blade loads and performance caused by asymmetrical effects like turbulence, wind shear and tower shadow lead to fatigue loads which seriously affect wind turbine life cycle. This paper focused on wind turbine fatigue load response characteristics, built the multiple input multiple output linearized matrix model, introduced individual pitch control algorithm for optimized disturbance control based on norm theory. Modeling, simulation and verification of the control algorithm are conducted in Matlab. The investigation is conducted based on a 2MW doubly-fed wind turbine. By comparing the results of wind turbine deflection rate and angle deflection rate to collective pitch control method, it shows the individual pitch control algorithm can significantly reduce wind turbine fatigue load, and the control effect is superior to traditional control algorithm.

High isolation and compact MIMO antenna system with defected shorting wall

2014 ◽  
Vol 7 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Xi-Wang Dai ◽  
Long Li ◽  
Zhen-Ye Wang ◽  
Chang-Hong Liang
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Mimo System ◽  
Multiple Input Multiple Output ◽  
Local Area ◽  
Antenna System ◽  
Area Network ◽  
Mimo Antenna ◽  
High Isolation ◽  
Input Multiple Output

In this paper, a compact multiple-input multiple-output (MIMO) antenna system with high isolation is proposed for 2.4 GHz wireless local area network (WLAN) application. The system is composed of two aperture-coupled shorted patch antennas with a spacing of 4 mm (only 0.032λ). The antenna is fed with an H-shaped coupling slot, and the defected shorting wall is used for high isolation. The proposed MIMO system exhibits an isolation of better than −20 dB and a maximum isolation of −43 dB at the central frequency. The envelope correlation coefficient is less than 0.01. The simulated and measured results show that the proposed antenna is a good candidate for MIMO system with higher isolation and better diversity.

Sign in / Sign up

Export Citation Format

Share Document