Full-hydraulic synchronous steering system for low-speed heavy-load vehicle and control method thereof

US11724734B2 · kind B2 · utility

Assignee

• Hefei University of Technology · CN

Inventors

• Guang XIA · Hefei, CN
• Peng Shi · Beijing, CN
• Yang Zhang · San Diego, US
• Liping Xu · Hangzhou City, CN
• Mingzhuo Zhao · Hefei, CN
• Jun Gao · 红钢城街道, CN
• Meng Yang · Beijing, CN
• Shaojie Wang · Beijing, CN
• Baoqun Sun · Hefei, CN

Key dates

• Filing date: Sep 13, 2021
• Grant date: Aug 15, 2023
• Expiry date: Mar 30, 2042

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B62D5/07
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The present application provides a full hydraulic synchronous steering system for a low-speed heavy-load vehicle, where the system includes: a steering control mechanism and a steering actuator; by determining a desired steering curve between a steering wheel angle and a rear wheel angle, when a steering error exceeds an allowable error, a controller controls the opening and closing of an oil replenishment solenoid valve (5) and an oil discharge solenoid valve (4) to adjust a flow rate of the oil flowing into a steering cylinder (7), so as to ensure that the steering error is within an allowable error range, thereby implementing synchronous steering. A method for manipulating the full hydraulic synchronous steering system is further provided. The full hydraulic synchronous steering system and the method can improve synchronous steering capability of the low-speed heavy-load vehicle and change a steering ratio, thereby improving safety and direction feeling of a driver.