RAPID PROTOTYPING OF A GAIT GENERATION METHOD USING REAL-TIME HARDWARE IN LOOP SIMULATION

Author(s):  
UMAR ASIF ◽  
JAVAID IQBAL

Formal control design techniques usually rely on the plant model of a desired system. The plant model can be derived from the foundation principles of the system but often includes unidentified parameters. In order to approximate these unknown parameters, experiments are conducted to collect information from the behavior of plant dynamics. Thus, closed-loop feedback control methods can be formulated upon the estimation of an appropriate plant model using simulation techniques. Rapid prototyping techniques support this design paradigm which requires that the rapid prototype operate in real time, interact with real hardware and have supporting control functionality. This paper delivers a study on the modeling and testing of a gait generation method using a rapid prototyping technique. The objective is to develop a method of rapid prototyping to test new walking algorithms on a real-time robotic system. The paper addresses the drawbacks of a non-real-time simulation by evaluating the locomotion of a six-legged robot in terms of tracking errors and signifies the proposed methodology of tuning the gait generation algorithm online through real-time hardware in loop simulation setup. Finally, the paper inspects the improved locomotion of the robot using the proposed methodology and signifies it as a valid prototyping technique for approximating novel gait generation algorithms on real-time robotic systems.

2011 ◽  
Vol 2011 ◽  
pp. 1-15
Author(s):  
Meenakshi M. ◽  
M. Seetharama Bhat

This paper presents the design and development of a fixed low-order, robustH2controller for a micro air vehicle (MAV) named Sarika-2. The controller synthesis uses strengthened discrete optimal projection equations and frequency-dependent performance index to achieve robust performance and stability. A single fixed gain low-order dynamic controller provides simultaneous stabilization, disturbance rejection, and sensor noise attenuation over the entire flight speed range of 16 m/sec to 26 m/sec. Comparative study indicates that the low-orderH2-controller achieves robust performance levels similar to that of full order controller. Subsequently, the controller is implemented on a digital signal processor-based flight computer and is validated through the real time hardware in loop simulation. The responses obtained with hardware in loop simulation compares well with those obtained from the offline simulation.


2014 ◽  
Vol 889-890 ◽  
pp. 962-969 ◽  
Author(s):  
Jian Wen Li ◽  
Hong Guo Dong ◽  
Yue Wang ◽  
Si Zhang ◽  
Zheng Fei Xu

An ECU hardware-in-loop simulation system for electronic-controlled engine in better real-time and augmentability is built. We establish a dynamic average model of the electronic-controlled engine and put emphasis on analysing its fuel and oil slick modelmass flow model of intake manifold air and the sub-model of inlet manifold pressure. The engine model has fewer parameters and lower orders in order to adjust and set parameters; We propose a building program based on virtual instrument technology and adopts the chip TMS320F2812-DSP to design a signal interface system used to achieve the simulation for sensor signal and the collection of ECU output signal. Through the verification of simulating experimental data, it's proved that the established model of electronic-controlled engine has suitable steps and good real-time performance, building a good foundation for further experimental design and research in the future.


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