Control method of line control brake based on flow control

A flow control and flow technology, applied in the direction of brakes, hydraulic brake transmissions, etc., can solve problems such as large differences in brake pedal input, unclear physical meaning of control algorithm design, and PID control technology that cannot meet control requirements.
CN104477155AActive Publication Date: 2015-04-01ZHEJIANG WANXIANG PRECISION IND +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG WANXIANG PRECISION IND
Publication Date
2015-04-01

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Abstract

The invention discloses a control method of line control brake based on flow control, by considering the system pressure and the pedal feedback force error and combining the state equation of the system based on the flow control, the control has multi-parameter characteristic, non-linear characteristic, prediction control characteristic and pressure increasing and reducing accordance characteristic, at the premise of meeting the pressure control requirement, the pedal feedback force is stable, the control algorithm is simple and the control adaptability is strong.
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Description

technical field

[0001] The invention relates to a brake-by-wire control method, in particular to a flow control-based brake-by-wire control method that comprehensively considers system pressure and pedal feedback force errors. Background technique

[0002] The schematic diagram of the existing wire-controlled parking brake system is as follows: figure 1 As shown, the left side 41 of the brake master cylinder is connected to the plunger pump 10 through the first control valve 20, the right side 42 of the brake master cylinder is connected to the brake fluid tank 50 through the second control valve 30, and the ABS booster valve 60 is connected to the brake pump. The left side 41 of the master cylinder, the pedal 70 is provided with a displacement sensor 71 for detecting the displacement of the pedal. In the prior art parking brake system by wire, the system pressure is usually taken as the control object, and the piston pump motor speed or the opening time of the system press...

Claims

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