Controller Design of a Brake-By-Wire System Based on Giant-Magnetostrictive Material for an Intelligent Vehicle

Abstract

Mechatronics control technology can not only improve the performance of vehicles but also solve traditional automotive braking system problems such as long brake pipeline, lots of valve components, slow response and so on. In this paper, a giant-magnetostrictive actuator and a disc brake structure were used to build a drive control system, and the control system module was designed with a single-chip microcomputer as the core. Combined with sensor selection, software programming control was used to build the experimental test platform, and the maximum output displacement of the control system was 0.112156 mm, which was basically consistent with the theoretical calculation. The maximum output force was 3883 N, which exceeded the minimum output force of 3631 N calculated theoretically. According to the results of the test platform, the relevant test parameters were highly consistent with the theoretical calculation, which verified the correctness and effectiveness of the theoretical calculation and bench testbed design. It contributes to the improvement of vehicle active safety performance and can provide a new way for the development of an intelligent vehicle brake-by-wire system.

Magneto-Mechanical Coupling Analysis of Automobile Brake by Wire System Based on Giant-Magnetostrictive Actuator

“…1 Pre-tensioner 2 Pure Iron 3 Push rod 4 Winding frame 5 GMM 6 Guide rails 7 Lower end cap Figure 6 sketch of GMA structure The GMA have different driving forms [19]. This paper is based on an innovative structural design of the driving circuit.…”

“…1.13 /  w m i d I J (19) In the Formula, Im is the maximum effective current, i J is the current density, and the minimum wire diameter can be obtained as 0.869mm. According to the experimental requirements, the wire diameter is 1mm.…”