Global Technology Company, LLC

Zhaoyong Liu

Qindong Gu

Lili Zhang

Zixiang Yu

Xun Li

Bing Wang

Zhanyu Yuan

Xinmiao Yuan

Peidong Kang

Jie Ji

Zheng Wu

Dingsen Zhou

Qian Zhang

Pengfei Yu

Yiping Chen

Xibiao Liu

Xiang Zhou

Manqi Xu

The provided is a single side wheel anti-lock braking method and system based on a dual-microcontroller unit (MCU) electronic parking brake (EPB) system. The method includes the following steps: S1: calculating a real-time single side slip ratio, including a real-time left side slip ratio and a real-time right side slip ratio; S2: comparing the real-time single side slip ratio with a preset locking slip ratio, and adjusting a clamping force and a clamping time step of a rear wheel; S3: comparing a number of single side release commands within a set time with a threshold, and determining a road condition; and S4: executing a braking strategy based on the road condition. With the single side wheel anti-lock braking method and system based on a dual-MCU EPB system, the provided can perform anti-lock control on single side wheels based on real-time wheel speed information and identify road conditions.

Single side wheel anti-lock braking method and system based on dual- microcontroller unit (MCU) electronic parking brake (EPB) system

A bypass energy storage device for an electronically controlled hydraulic braking system includes a brake master cylinder, a first pipeline, and a second pipeline. The first pipeline is connected with a first branch. One end of the first branch is communicated to an energy accumulator, and the first branch is connected with a first inlet valve. The second pipeline is connected with a second branch. One end of the second branch is communicated to the energy accumulator, and the second branch is connected with a second inlet valve. The energy accumulator is communicated with a third branch, and one end of the third branch is communicated to a second pipeline. The effects of reducing energy consumption, better controlling foot feeling and thus improving the comfort and safety of products are achieved.

Bypass energy storage device for electronically controlled hydraulic braking system and control method thereof

A test method of wheel speed simulation and acquisition equipment for an EPB rear wheel anti-lock brake test is provided. The equipment includes a master computer, wheel simulation sets and an EPB system with a wheel anti-lock brake function, where the master computer includes a motor rotating speed control module, an EPB-required signal simulation module and a target wheel speed calculation module; the wheel simulation sets include motor drivers, motors, gears and wheel speed sensors; outputs of the wheel speed sensors are connected into the EPB system; the motor rotating speed control module is connected with the motor drivers; the EPB system to be tested includes EPB calipers, pressure sensors are arranged in the EPB calipers; the target wheel speed calculation module calculates a target wheel speed and sends the target wheel speed to the motor rotating speed control module to complete the control of an actual wheel speed.

Test method of wheel speed simulation and acquisition equipment for EPB rear wheel anti-lock brake test

An automobile electronic parking execution controller with a double-MCU redundancy design comprises a parking switch circuit, a biaxial acceleration sensor unit, a main micro control unit (MCU) Uand a monitoring MCU U, wherein the main MCU Ucontrols a parking motor by means of detecting signals of the parking switch circuit and the biaxial acceleration sensor, the monitoring MCU Umonitors a running state of a whole control system and restores the main MCU Uwhen the main MCU Uis abnormal, and the main MCU Urestores the monitoring MCU Uwhen the monitoring MCU Uis abnormal. After the main MCU Ucrashes, the main MCU Ucan still be quickly stored through the monitoring MCU U, so that the main MCU Uquickly enters a response state to recover the parking brake control ability, which improves the safety of the system.

Automobile electronic parking execution controller with double-MCU redundancy design

The provided are a brake-by-wire (BBW) electronic control actuator unit and a use thereof. The BBW electronic control actuator unit includes a machine body, as well as a permanent magnet brushless direct-current motor (PMBDCM) and speed-reducing torque-increasing gear sets integrated in the machine body, where the PMBDCM includes a stator assembly and a rotor assembly; the rotor assembly is connected to one end of a motor shaft; the other end of the motor shaft is connected to an input end of each of the speed-reducing torque-increasing gear sets; an output end of the speed-reducing torque-increasing gear set is connected to an output shaft; and the output shaft extends out of the machine body. According to the BBW electronic control actuator unit and the use thereof, by assembling the PMBDCM and the speed-reducing torque-increasing gear set, there are advantages of a high mounting accuracy, and a compact structure.

Brake-by-wire (BBW) electronic control actuator unit and use thereof

An electro-hydraulic braking system includes a main casing. A hydraulic unit brake master cylinder is provided in the main casing. An outer end of a piston rod of the brake master cylinder is connected to an output top rod. Another end of the output top rod is provided with an input rod. The input rod is slidably connected in the main casing along only a length direction of the input rod, and another end of the input rod is provided with a push rod that is configured to transmit a brake pedal force. The main casing is further provided therein with a reset member configured to push the push rod away from the brake master cylinder to reset and a displacement sensor configured to sense a displacement of the push rod. The input rod and the output top rod include a spacing state and an abutment state.

Electro-hydraulic braking system and braking method thereof

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Nantong, China

Zhaoyong Liu