Embedded System Development of an Electric Power Assisted Steering System Using MATLAB/SIMULINK/Real-Time Workshop

2004 ◽  
Author(s):  
Auto Lin ◽  
Go-Long Tsai ◽  
Bo-Chiuan Chen
Keyword(s):  
Embedded System ◽  
Electric Power ◽  
Real Time ◽  
System Development ◽  
Steering System ◽  
Matlab Simulink

scholarly journals A Survey on Different Real Time Operating Systems

2021 ◽  
Vol 10 (5) ◽  
pp. 221-223
Author(s):  
Santhosh M S ◽  
Nagaraja G S
Keyword(s):  
Embedded System ◽  
Real Time ◽  
Operating Systems ◽  
System Development ◽  
Efficient Utilization ◽  
Task Execution ◽  
Real Time Operating System ◽  
Development Costs ◽  
Software Modularity ◽  
Embedded Applications

To minimise development costs and enhance dependability, modern embedded system development is increasingly emphasising on software modularity and reuse. Microcontrollers are extensively employed in embedded applications that have a very specific and specialised job to complete. The embedded applications are always resource constraint which requires efficient utilization of available resources. A Real Time Operating System (RTOS) is frequently used in this context to plan task execution as well as enable intertask communication and synchronisation. This paper provides the survey of different RTOS available in market and their applications. Several open source RTOS such as Free RTOS, VxWorks, SmallRTOS and TinyOS are compared with respect to the scheduling algorithms used.

Dual Closed-Loop Electric Power Steering System on the Mixed H2/H∞ Control Strategy

2014 ◽  
Vol 716-717 ◽  
pp. 1582-1586
Author(s):  
Wan Ying Wei ◽  
Jin Ying Chen ◽  
Hong Lian Li
Keyword(s):  
Electric Power ◽  
Real Time ◽  
Pid Control ◽  
Steering System ◽  
Outer Ring ◽  
Real Time Control ◽  
Electric Power Steering ◽  
Power Steering System ◽  
Power Steering ◽  
Electric Power Steering System

Aiming at the request of EPS system for the robust stability and the dynamic characteristic, the dynamics model of an electric power steering system (EPS) is established , the outer ring mixed H2/H∞ control based on genetic algorithm decides the values of the target torque and solves the perturbation problem, the inner ring control with PID control algorithm will never compromise with current real-time control. Simulation results show that the application of mixed H2/H∞ in the outer ring for current decision can make the EPS system stable and realize the ideal control performance, can also obtain the low frequency information from the surface of the road and depress the high frequency interference.With the application of current tracking loop PID control, EPS system has good dynamic characteristics of the target current real-time tracking, so that electric power steering system has better stability and traking performence.

Comparative Study of Rack Force Estimation for Electric Power Assist Steering System

2017 ◽  
Author(s):  
Yijun Li ◽  
Taehyun Shim ◽  
Dexin Wang ◽  
Timothy Offerle
Keyword(s):  
Control System ◽  
Electric Power ◽  
Vehicle Dynamics ◽  
System Development ◽  
Steering System ◽  
Estimation Methods ◽  
Simulation Environment ◽  
Force Estimation ◽  
Adaptation Algorithm ◽  
Estimation Algorithms

For an electric power assist steering (EPAS) control system, it is important to know the rack force information to improve the steering feel control performance. Since there is no direct measurement of rack force in current EPAS system, there have been various rack force estimation algorithms proposed for the control system development. In this paper, two existing rack force estimation methods (based on steering system dynamics and vehicle dynamics) have been implemented in the simulation environment to compare its performance. The effectiveness and limitations of two methods have been analyzed using a simulation of high fidelity EPAS model with various inputs conditions. In addition, new adaptation algorithm is proposed to further improve the estimation performance of the existing methods.

Development and Application of Quality Control System for Highway Subgrade Construction

2019 ◽  
Vol 2 (5) ◽  
Author(s):  
Tong Wang
Keyword(s):  
Quality Control ◽  
Real Time ◽  
Detection Method ◽  
System Development ◽  
Effective Control ◽  
Construction Process ◽  
Development Mode ◽  
The Road ◽  
Whole Process

The compaction quality of the subgrade is directly related to the service life of the road. Effective control of the subgrade construction process is the key to ensuring the compaction quality of the subgrade. Therefore, real-time, comprehensive, rapid and accurate prediction of construction compaction quality through informatization detection method is an important guarantee for speeding up construction progress and ensuring subgrade compaction quality. Based on the function of the system, this paper puts forward the principle of system development and the development mode used in system development, and displays the development system in real-time to achieve the whole process control of subgrade construction quality.

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