SU1032996A3 - Device for forming general reference speed signal for antiblocking braking system of automobile vehicle - Google Patents

Abstract

<P> Regulation of the brake pressure, in particular in the case of diagonal and / or rear axle regulation, by measuring the peripheral speed of at least two wheels of a vehicle, where appropriate by determining the reference speeds corresponding to the peripheral speeds as a function of the speed of the vehicle, then forming an overall reference speed for the control channels assigned to the wheel brake circuits. </ P> <P> The minimum of the wheel or reference speeds is formed for the determination of the overall reference speed while running without regulation, and the maximum for regulated running. </ P>

Description

The invention relates to aBfoMo6Mn structure and can be used in control devices for brake systems of automobiles equipped with anti-blocking devices, where information about the need for adjustment comes from diagonally located wheels. The closest in technical essence to the present invention is a device for signaling the signal of a general reference speed for an anti-lock braking system of a car, which contains sensors of angular speed diagonally located the driven and driving wheels connected to the formers of the corresponding speeds of the corresponding wheels through the | The worlds of current speed signals are L 13 However, when using a known device, the value of the reference speed can be overestimated, which is from (It is a significant effect on the reliability of the system as a whole. The purpose of the invention is to increase the reliability of the whole anti-lock braking system as a whole. This goal is achieved by the fact that the signal conditioning device is common the reference speed, containing the angular velocity sensors of diametrically located driven and driving wheels, connected to the shape of the bodies of the reference speed signals with The corresponding wheels through the current speed signal conditioners are equipped with a circuit for selecting the maximum value of the reference speed, the inputs of which are connected to the wheel speed signal generators, a switch installed in the circuit connecting the angular velocity sensor of the driving wheel with the specified circuit, and the memory block, output which is connected to the control circuit by a switch, the start-up input is connected to the circuit-controlled braking, and the air input is connected to a circuit signaling the end of the regulation. The drawing shows a block diagram of a device for generating a signal of a common reference speed of an anti-block braking system of a car. The device contains an angular velocity sensor 1 of the right front wheel (front wheel 1), an angular velocity sensor 2 of the left rear wheel (driving wheel) connected respectively via shaper 3 vt k signals of current speeds to shaper 5 and 6 signals of reference speeds of wheels, the outputs of which are connected. To the circuit 7 for selecting the maximum value of the reference speed. Between the driver and 6 there is a switch 8, the control circuit of which is connected to the output of the memory block 9, the starting input 10 of which is connected to the circuit signaling about Chal controlled deceleration, and a return input lied diagram of signaling okonchayii control (not shown). Sensors 1 and 2 supply an alternating voltage whose frequency is proportional to. is the speed of the wheels. This frequency is converted into a former 3 and 4 into a constant voltage, the height of which is proportional to the speed of the wheels. In formers 5 and 6, this is a constant, the voltage is smoothed. Thus, the formers 5 and 6 supply the smoothed output signals to the circuit 7, which selects the maximum value and the forming signal of the total reference speed. In the rear wheel circuit, the switch 8 is driven by the output signals of block 9. The latter is triggered by signals generated upon entering into adjustable braking. These signals can, for example, be received when the intake valve of the driven wheel modulator is turned on either by an air switch or by deceleration light. By starting block 9 B1, switch 8 is turned on, and circuit 7 can select a maximum of both front and rear wheel reference speeds to obtain the overall vehicle speed reference. The block 9 returns to its initial position after the end of the adjustment process, for example, the signal is used when the exhaust valve is turned on or when the pneumatic switch is released, or when the acceleration signal drops. Due to the return of block 9, switch 8 is turned off. The proposed device ensures that during the drive without braking the signal of the rear wheel speed is not generated, 10329964 due to the number 1 prevents the overall reference speed from being overestimated and the reliability of the system in the center increases.

Claims (1)

(5 *) (57) GENERAL REFERENCE SPEED SIGNAL FORMING DEVICE FOR ANTI-BLOCKING BRAKE SYSTEM OF A CAR, containing angular velocity sensors of diagonally located driven and driving wheels connected to signal generators of the reference speeds of the respective wheels through signal generators of current speeds the fact that, in order to increase the reliability of the entire anti-lock system as a whole, it is equipped with a circuit for selecting the maximum value of the reference speed, to which are connected the inputs Indicators of the signals of the reference speeds of the wheels, a switch installed to the circuit, which connects the wheel speed sensor to the specified circuit, and a memory unit, the output of which is connected to the switch control circuit, the starting input is connected to the circuit, which signals the beginning of adjustable braking, and return input - with mine, signaling the end of regulation.