Brake pedal feeling simulation device and method based on controllable variable stiffness hydraulic cylinder
A technology for simulating devices and brake pedals, which is applied in the direction of braking action starting devices, foot-operated starting devices, brakes, etc., can solve the problem of not considering the dynamic change of hydraulic pressure of the brake pedal simulating device, and improve subjective comfort Strong adaptability and mature conditions
Active Publication Date: 2021-01-12
TSINGHUA UNIV
View PDF5 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although the active simulator has better simulation performance, the existing design schemes can only achieve pedal feel calibration under static conditions, without considering the dynamic change of the hydraulic pressure of the brake pedal simulator, so there are still obvious limitations
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.
[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for convenience The present invention is described and simplified descriptions do not indicate or imply that the dev...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a brake pedal feeling simulation device and method based on a controllable variable stiffness hydraulic cylinder, and the device comprises a simulation cylinder assembly, a simulation cylinder pressure sensor and a three-way joint, and the other two ends of the three-way joint are respectively connected with a brake main cylinder and a hydraulic adjustment unit through a main cylinder oil pipe, the simulation cylinder assembly and the adjusting motor are respectively and mechanically connected with the speed reducing mechanism assembly; the simulation cylinder assemblyis an actuating mechanism for adjusting the hydraulic pressure of pedal feeling; the adjusting motor serves as a power source to provide power with equivalent rigidity for a series spring piston system of the adjusting simulation cylinder assembly; and the speed reducing mechanism assembly is used for reducing the speed and increasing the torque, and transmitting the adjusting driving force of the simulation cylinder assembly output by the adjusting motor to the simulation cylinder assembly. By comparing pedal feeling characteristic MAP data at different pedal speeds and combining feedback information such as push rod speed and hydraulic pressure deviation, movement of the adjusting motor is controlled, feedback tracking control over expected main cylinder pressure is achieved, and the brake pedal feeling in the dynamic process is accurately simulated.
Description
technical field [0001] The invention relates to the technical field of automobile braking, in particular to a brake pedal feeling simulation device and method based on a controllable variable stiffness hydraulic cylinder. Background technique [0002] The electrification and intelligence of automobile technology put forward a higher level of requirements for the braking system, especially in the context of integrated development of the wire-controlled chassis system, how to make the wire-controlled braking system more comfortable and safe through existing technical means , Efficient performance level, is the key that brake system developers need to consider deeply. [0003] Technical solutions based on brake-by-wire systems such as booster motors, high-voltage accumulators, and new master cylinders have become the mainstream of design and development. Different from the direct connection between the master cylinder and the wheel cylinder of the traditional mechanical hydrau...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/40B60T7/04
CPCB60T7/042B60T8/409
Inventor 李超何承坤张俊智
Owner TSINGHUA UNIV