Active brake pedal travel simulator and control method thereof

Abstract

The invention discloses an active brake pedal travel simulator and a control method of the active brake pedal travel simulator. The active brake pedal travel simulator and the control method of the active brake pedal travel simulator and aim to solve the problem that in the prior art, requirement for hydraulic adjusting unit performance is too high, and utilization of existing components is insufficient. The active brake pedal travel simulator comprises an inner circulation nut with teeth, a screw rod ejector rod, a driving gear, a motor, a second piston, a first piston, a simulator cylinder body, a spacing board, a limit switch and a rear cover, wherein the rear cover and the simulator cylinder body are arranged on the left side and the right side of the spacing board, the inner circulation nut with the teeth is arranged on the rear cover and the spacing board through two thrust bearings, the left end of the screw rod ejector rod is arranged inside a hole of the inner circulation nut with the teeth and is in rolling connected with the inner circulation nut with the teeth, the right end of the screw rod ejector rod is inserted into the second piston inside the simulator body, the first piston is arranged on the right side of the piston, the motor is arranged on the lower portion of the simulator cylinder body, the motor and the driving gear are fixedly connected, a motor control device is arranged on the motor, the limit switch is arranged on the rear cover, and the limit switch and the motor control device are in wire connection. The invention further provides the control method of the active brake pedal travel simulator.

Description

technical field [0001] The invention relates to a simulation device applied in the field of automobile brake systems, more precisely, the invention relates to an active brake pedal stroke simulator and a control method thereof. Background technique [0002] In order to achieve the goal of reducing energy consumption and increasing driving range, new energy vehicles have introduced regenerative braking systems. At present, in order to obtain good braking performance and meet the requirements of relevant regulations, the existing regenerative braking system adopts the combination of traditional hydraulic (or pneumatic) braking and motor regenerative braking. [0003] In order to improve the energy recovery rate of the regenerative braking system, it is necessary to reasonably distribute and adjust the braking force of the motor and the hydraulic (or pneumatic) braking force. The brake pedal of the regenerative braking system still has a pedal feel close to that of a tradition...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the problems in the prior art that the performance requirements of the hydraulic adjustment unit exceed the capabilities of existing products, and the utilization of existing component resources is still insufficient, and provide an active braking system. Pedal stroke simulator and its control method

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