Control method for improving response speed of push rod of decoupling type electric booster
A control method and booster technology, which is applied in the direction of brakes, brake transmission devices, transportation and packaging, etc., can solve the problem of exhaustion of the decoupling gap between the brake pedal push rod and the master cylinder push rod, and achieve the difficulty of system adaptation Low, high reliability and real-time performance, and the effect of improving response speed
Pending Publication Date: 2022-03-25
LIUZHOU WULING MOTORS +1
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[0004] The purpose of the present invention is to provide a control method for improving the response speed of the decoupling electric booster push rod, aiming at solving the problem of exhaustion of the decoupling gap between the brake pedal push rod and the master cylinder push rod, so that the system can know the solution Coupling stroke margin to avoid abnormal user experience
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[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0022] An embodiment of the present invention provides a control method for improving the response speed of the decoupling electric booster push rod. In order to let the system know the decoupling stroke margin to avoid abnormal user experience, the basic solution is to add a displacement sensor receiver to the The master cylinder push rod reuses the original magnetic strip signal transmitter of the pedal push rod. When the pedal push rod is not synchronized with the master cylinder push rod, the signal obtained by the displacement sensor receiver will change. Through this signal change...
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The invention provides a control method for improving the response speed of a push rod of a decoupling type electric booster, which comprises the following steps of: S1, initializing, and calculating an initial decoupling gap between a pedal push rod and a main cylinder push rod; s2, the pedal push rod moves, and the output voltage value of the displacement sensor receiver is increased; s3, the controller obtains an output voltage value and calculates a decoupling gap reduction value; s4, the controller drives a motor according to the decoupling gap, and the motor drives a main cylinder push rod to move; s5, judging whether the current decoupling gap is recovered or not, if not, continuing to execute the step S4, and if yes, entering the step S6; s6, the displacement sensor receiver recovers to the reference voltage value, and the controller obtains a gap recovery signal; s7, the controller issues an adjustment stopping instruction to the motor driver, and the initial decoupling gap is recovered; according to the control method for improving the response speed of the push rod of the decoupling type electric booster, the sensor assembly measures the most direct coupling gap amount, possible faults, needing to be borne by other indirect measurement, of other positions and time consumption of a long loop do not need to be considered, and reliability and real-time performance are high.
Description
technical field [0001] The invention belongs to the technical field of electric power-assisted braking, and in particular relates to a control method for improving the response speed of a push rod of a decoupled electric power booster. Background technique [0002] The current brake booster system has a decoupling design for the pedal pushrod and the master cylinder pushrod, but the system cannot know whether the exhausted decoupling stroke causes the user to suddenly feel the power failure or power attenuation. The current electronic power brake system is to meet the requirements of active braking. The decoupling design of the brake pedal and the brake master cylinder is applied. Specifically, when the active brake is running, the brake pedal will not have any activity; this leads to the traditional brake pedal push rod and the brake master cylinder push The real-time synchronous movement between the rods no longer exists. When the brake pedal push rod moves, the sensor of ...
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Login to View More IPC IPC(8): B60T8/171B60T13/74
CPCB60T8/171B60T13/745
Inventor 马果李贵和吴世林蒋华李杰
Owner LIUZHOU WULING MOTORS