Research on Variable Transmission Ratio and Yaw Rate Control Strategy of Electric Forklift Steering-by-Wire System | Zendy

Guohua Xiang | Zendy; Benxian Xiao | Zendy

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Research on Variable Transmission Ratio and Yaw Rate Control Strategy of Electric Forklift Steering-by-Wire System

Author(s) -

Guohua Xiang,

Benxian Xiao

Publication year - 2016

Publication title -

international journal of intelligent systems and applications

Language(s) - English

Resource type - Journals

eISSN - 2074-9058

pISSN - 2074-904X

DOI - 10.5815/ijisa.2016.10.03

Subject(s) - yaw , overshoot (microwave communication) , control theory (sociology) , computer science , continuously variable transmission , controller (irrigation) , variable (mathematics) , pid controller , fuzzy control system , stability (learning theory) , fuzzy logic , automotive engineering , transmission (telecommunications) , control (management) , control engineering , engineering , mathematics , artificial intelligence , temperature control , telecommunications , mathematical analysis , agronomy , machine learning , biology

Combined with the trans mission ratio characteristics of fo rklift steering-by-wire (SBW) system, through the application of fuzzy control technology, the variable trans mission ratio function is designed based on the steering handle angle and vehicle speed, and simulation analysis of sinusoidal steering is done at low-speed and high-speed. Simulation results show that the fuzzy variable transmission ratio control can make forklift steering light & sensitive at low-speed and steering steady & heavy at high speed, also it can improve the operation stability and reduce the driver’s load. Discuss the relationship between yaw rate and forklift handling stability, propose the yaw rate feedback control strategy based on the fuzzy variable t ransmission ratio control, and design a fuzzy self-adaptive PID controller. Simulation results show that the SBW system based on the fuzzy variable trans mission ratio control with yaw rate feedback can accurately and quickly t rack the desired yaw rate, and reduce or even eliminate the overshoot phenomenon, improve the forklift dynamic performance.

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