{'fraction_non_alphanumeric': 0.022797927461139896, 'fraction_numerical': 0.019689119170984457, 'mean_word_length': 4.8545454545454545, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Establishing the Dynamics Model of the Vehicle Using the 4-Wheels Steering Systems

Received: 18 June 2020 Accepted: 22 August 2020 The safety and stability of the vehicle are some of the most important factors when the vehicle moves on the road. If the driver suddenly steers at high speed, it may cause instability (oversteering, understeering). One of the solutions used to limit this situation is to use a 4-wheels steering system instead of the conventional 2-wheels steering system. This article focuses on establishing the spatial dynamics model of the vehicle and simulating the trajectory of the vehicle in the case of 4-wheels steering and 2-wheels steering in different moving conditions. The results of the study show that when the vehicle was equipped with the 4-wheels steering system, the stability of the vehicle was improved. Therefore, if the vehicles use the 4-wheels steering system, the oversteering and understeering phenomenon can be reduced.