Energy Optimization of Brushless DC Motor in Electric Power-Assisted Steering

2014 ◽  
Vol 68 (1) ◽  
Author(s):  
Kumeresan A. Danapalasingam
Keyword(s):  
Electric Power ◽  
Electrical Energy ◽  
Brushless Dc Motor ◽  
Matlab Simulation ◽  
Brushless Dc ◽  
Motor Controller ◽  
Column Type ◽  
Control Scheme ◽  
Regulation Method ◽  
The Mathematical Model

In an electric power-assisted steering (EPS) an electric motor is controlled to provide assistance in vehicle steering and to enable various steering feels. To optimize energy consumed by a column-type EPS equipped with a brushless dc (BLDC) motor the author designs two controllers as needed. Firstly a controller to generate driver torque is developed based on nonlinear adaptive regulation method using the mathematical model of EPS. The second controller is a PID motor controller that is applied to produce assistance torque for desired energy saving. The trade-off between driver’s comfort and energy consumption is demonstrated using Matlab simulation results. In electric vehicles (EVs) where electrical energy is limited the control scheme introduced here is expected to fit perfectly.

Energy Optimization of Brushed DC Motor in Electric Power-Assisted Steering

2014 ◽  
Vol 70 (3) ◽  
Author(s):  
Kumeresan A. Danapalasingam
Keyword(s):  
Electric Power ◽  
Electric Vehicles ◽  
Pid Control ◽  
Energy Optimization ◽  
Electrical Energy ◽  
Dc Motor ◽  
Control Paradigm ◽  
Column Type ◽  
Regulation Method ◽  
Simulation Results

Electric power-assisted steering (EPS) is a control system where an electric motor is used to provide assistance in vehicle steering. In this work controllers are designed for a column-type EPS equipped with a brushed DC motor to enable energy optimization. Using a mathematical model of EPS a controller is developed based on nonlinear adaptive regulation method to generate driver torque. PID control is then applied to produce assistance torque in accordance to desired energy saving. Simulation results using Matlab show the trade-off between driver’s comfort and energy consumption. The control paradigm introduced here fits appropriately in electric vehicles (EVs) where electrical energy is scarce.  

Design of Pure Electric Vehicles’ Drive Motor Controller Based on dsPIC

2010 ◽  
Vol 139-141 ◽  
pp. 2243-2246
Author(s):  
Cheng Qun Li ◽  
Xing Sun ◽  
Xiao Lei Dong
Keyword(s):  
Electric Vehicles ◽  
Heat Dissipation ◽  
Fast Response ◽  
Dc Motor ◽  
Brushless Dc Motor ◽  
Brushless Dc ◽  
Motor Controller ◽  
Control Scheme ◽  
Drive Motor ◽  
Permanent Magnet Brushless Dc

To meet the industry demands of the drive motor controller of the pure electric vehicles, this paper introduces a design of the high-power brushless DC motor controller at the core of dsPIC30F6010A. Through the establishment of permanent magnet brushless DC motor (PMBLDC) mathematical model and the analysis of the running principle of it, the control scheme of pure electric vehicles was presented and the drive circuits, protection circuits and software programming of PMBLDC controller were designed in this paper. The paralled IGBT module is adopted as the drive circuits to solve the heat dissipation issues under the high current, PID is chosen as the control algorithm and cascade control is designed as the speed regulation.The simulation by MATLAB/simulink shows that the control scheme is reasonable, the system has fast response and smooth running.

Brushless DC Motor Controller Design and Double-Loop PID Parameter Tuning

2014 ◽  
Vol 487 ◽  
pp. 621-625
Author(s):  
Hua Zhang Wang ◽  
Qin Zhen Huang
Keyword(s):  
High Performance ◽  
Controller Design ◽  
High Reliability ◽  
Parameter Tuning ◽  
Brushless Dc Motor ◽  
Loop Control ◽  
Brushless Dc ◽  
Pid Algorithm ◽  
Motor Controller ◽  
Control Scheme

An efficient and practical controller was designed, which achieves high performance for a BLDC motor. Actual hardware experimental platform was established. Double-closed loop control scheme using PID algorithm is presented and applied into the system successfully. Through the tuning of PID parameters, the start and stop of motor is fast, current fluctuation is small, and the actual speed of operation is consistent to the set speed, the error of stability maintains at 10r/min or less. The experiment result shows the BLDC control system operates smoothly, and it has high reliability, robustness.

scholarly journals Brushless DC Motor Speed Controller for Electric Motorbike

2018 ◽  
Vol 9 (2) ◽  
pp. 859
Author(s):  
Mohd Syakir Adli ◽  
Noor Hazrin Hany Mohamad Hanif ◽  
Siti Fauziah Toha Tohara
Keyword(s):  
Pid Controller ◽  
Dc Motor ◽  
Battery Pack ◽  
Brushless Dc Motor ◽  
Bldc Motor ◽  
Motor Speed ◽  
Brushless Dc ◽  
Speed Controller ◽  
Optimum Speed ◽  
Control Scheme

<p>This paper presents a control scheme for speed control system in brushless dc (BLDC) motor to be utilized for electric motorbike. While conventional motorbikes require engine and fuel, electric motorbikes require DC motor and battery pack in order to be powered up. The limitation with battery pack is that it will need to be recharged after a certain period and distance. As the recharging process is time consuming, a PID controller is designed to maintain the speed of the motor at its optimum state, thus ensuring a longer lasting battery time (until the next charge). The controller is designed to track variations of speed references and stabilizes the output speed accordingly. The simulation results conducted in MATLAB/SIMULINK® shows that the motor, equipped with the PID controller was able to track the reference speed in 7.8x10<sup>-2</sup> milliseconds with no overshoot.  The result shows optimistic possibility that the proposed controller can be used to maintain the speed of the motor at its optimum speed.</p>

scholarly journals Analysis of sensorless control of brushless DC motor using unknown input observer with different gains

2017 ◽  
Vol 68 (2) ◽  
pp. 99-108 ◽  
Author(s):  
Mitesh B. Astik ◽  
Praghnesh Bhatt ◽  
Bhavesh R. Bhalja
Keyword(s):  
Sensorless Control ◽  
Estimation Algorithm ◽  
Dc Motor ◽  
Brushless Dc Motor ◽  
Unknown Input ◽  
Unknown Input Observer ◽  
Load Torque ◽  
Brushless Dc ◽  
Control Scheme ◽  
Simulation Results

Abstract A sensorless control scheme based on an unknown input observer is presented in this paper in which back EMF of the Brushless DC Motor (BLDC) is continuously estimated from available line voltages and currents. During negative rotation of motor, actual and estimated speed fail to track the reference speed and if the corrective action is not taken by the observer, the motor goes into saturation. To overcome this problem, the speed estimation algorithm has been implemented in this paper to control the dynamic behavior of the motor during negative rotation. The Ackermans method was used to calculate the gains of an unknown input observer which is based on the appropriate choice of the eigenvalues in advance. The criteria to choose eigenvalue is to obtain a balance between faster convergence rate and the least noise level. Simulations have been carried out for different disturbances such as step changes in motor reference speed and load torque. The comparative simulation results clearly depict that the disturbance effects in actual and estimated responses minimizes as observer gain setting increases.

Research on DC Motor Intelligent Control Algorithm

2013 ◽  
Vol 462-463 ◽  
pp. 775-781 ◽  
Author(s):  
Li Fang
Keyword(s):  
Intelligent Control ◽  
High Performance ◽  
Dc Motor ◽  
Regulation System ◽  
Brushless Dc Motor ◽  
Brushless Dc ◽  
Speed Regulation ◽  
The Mathematical Model ◽  
Conventional Algorithm ◽  
Improved Algorithm

Based on analyzing the mathematical model of brushless DC motor and shortcomings of the traditional PID control, combining with the intelligent algorithm and the conventional PID, the paper gives a improved algorithm and simulations in MATLAB environment. A brushless DC motor PWM speed regulation system is designed based on high-performance MCU. The improved algorithm and the conventional algorithm control effects were analyzed and compared in the experiment.

Analysis and Implementation of a High Boost Ratio DC-DC Converter for Minimizing Commutation Torque Ripple in Brushless DC Motor

2016 ◽  
Vol 7 (2) ◽  
pp. 583
Author(s):  
M. Senthil Raja ◽  
B. Geethalakshmi
Keyword(s):  
Closed Loop ◽  
Torque Ripple ◽  
Dc Motor ◽  
Duty Ratio ◽  
Brushless Dc Motor ◽  
Loop Control ◽  
Brushless Dc ◽  
Control Scheme ◽  
Converter Topologies ◽  
Commutation Torque Ripple

Brushless dc motor still suffers from commutation torque ripple, which primarily depends on transient line current in the commutation interval. In order to control the incoming and outgoing phase currents to change at the same rate during commutation, this paper presents a novel high boost ratio DC-DC circuit topology in the front end of the inverter. With a suitable closed loop control scheme, the proposed high boost ratio DC-DC converter is operated with two different duty ratios one during commutation period and the other during non commutation period. The cause of commutation ripple is analyzed, and the way to adjust the duty ratio for obtaining the desired dc link voltage is introduced in detail. Finally, simulation and experimental results show that, compared with the existing dc–dc converter topologies, the proposed method can obtain the desired voltage much faster and minimize commutation torque ripple more efficiently

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