EP1379420A2 - Systeme de commande electronique, destine en particulier a un systeme de freinage de vehicule - Google Patents

Systeme de commande electronique, destine en particulier a un systeme de freinage de vehicule

Info

Publication number
EP1379420A2
EP1379420A2 EP02727238A EP02727238A EP1379420A2 EP 1379420 A2 EP1379420 A2 EP 1379420A2 EP 02727238 A EP02727238 A EP 02727238A EP 02727238 A EP02727238 A EP 02727238A EP 1379420 A2 EP1379420 A2 EP 1379420A2
Authority
EP
European Patent Office
Prior art keywords
brake
module
control
modules
driver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02727238A
Other languages
German (de)
English (en)
Inventor
Reinhard Weiberle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1379420A2 publication Critical patent/EP1379420A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/741—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/82—Brake-by-Wire, EHB

Definitions

  • the invention relates to an electronic control system, in particular for a vehicle brake system.
  • Such an electrical control system is known using the example of an electrical braking system for motor vehicles from DE-A 196 34 567 (US Pat. No. 5,952,799).
  • the control system described there has a control module for determining the driver's request and control modules for setting the braking force on the vehicle wheels, such a control module preferably actuating a group of wheel brakes, combined axially or diagonally.
  • At least one communication system (bus system) is provided to connect the control module that detects the driver's request to the control modules for braking force adjustment, in order to be able to ensure at least partial functionality of the brake system in the event of a fault, there are further communication connections that are independent of the communication system between the control module for driver request detection and the control modules provided for braking force adjustment.
  • the power electronics for controlling the actuators actuating the wheel brakes are structurally integrated in the control modules for adjusting the braking force.
  • This means that clocked currents have to be transmitted from the control unit to the brake actuators, which can lead to considerable EMC problems (EMC electromagnetic compatibility).
  • EMC electromagnetic compatibility
  • control and regulation functions on the one hand solves the conflict of objectives described above for low electromagnetic interference and a relatively small number of control modules and / or microcomputers.
  • brake circuit control modules brake modules
  • actuator-specific control and evaluation functions of local electronic units wheel or axle modules
  • the brake modules are advantageously connected to the module with a further communication system, for example a higher-level vehicle infrastructure bus
  • Driver request detection and / or stability control connected.
  • further electronic systems such as steer-by-ire, shift-by-wire, drive-by-ire systems, etc. are connected to this communication system.
  • the data volume in the individual communication systems is also reduced, so that shorter clock cycles can be realized. This has a particularly advantageous effect on distributed controllers and the control accuracy and / or dynamics that can be achieved there.
  • the fault-tolerant control module for recording the driver's braking request can also take over the recording and evaluation of the steering request, the gear selection of the transmission, the power request of the drive unit, etc.
  • the networking of various subsystems also facilitates the implementation of new vehicle functions, such as a driving dynamic control with combined braking and steering intervention, a stop-and-go driving function, etc.
  • the brake-by-ire system shown in the figure is a two-circuit brake system, with each brake circuit being composed of at least one brake module 1 and 2 and at least one electrically controlled brake actuator 3, 4, 5, 6.
  • each brake circuit being composed of at least one brake module 1 and 2 and at least one electrically controlled brake actuator 3, 4, 5, 6.
  • a solution is shown as a preferred embodiment in which such a wheel module is assigned to each wheel.
  • the actuators for controlling the wheel brakes are combined on one axle in a wheel module, so that in this case only two wheel modules (so-called axle modules) are present in a four-wheel, two-axle vehicle.
  • Every wheel or Axis module comprises one (in the case of the axis modules two) brake actuators 3a, 4a, 5a, 6a, which in the preferred exemplary embodiment of an electromechanical brake system are designed as electric motors with transmission gears.
  • the wheel or axle modules have sensors 3b, 4b, 5b, 6b which detect the variables to be measured on the wheel and / or on the wheel brake, for example speed, speed, Braking force, braking torque, etc.
  • each wheel or axle module comprises a local electronics unit 3c, 4c, 5c, 6c, which includes the control electronics for the brake actuator, in particular the output stage.
  • the wheel and axle modules are connected to the brake modules 1 and 2 via communication systems 7 and 8, depending on the brake circuit membership.
  • the wheel modules transmit the sensed sensor signals via the communication systems 7 and 8, while control signals are routed from the brake modules to the wheel modules.
  • the wheel or axle modules convert the control signals of the brake modules into control currents for the actuator of the wheel brake.
  • the actuator is an electronically commutated motor. Due to the specified interface described and the spatial assignment of the control electronics to the actuator, hardware components specially configured for the respective motor can be used without the need for hardware changes in the brake modules.
  • a communication system is a bus system for digital data transmission (e.g. GAN or similar bus systems).
  • actuators which build up braking force by means of valves and / or pumps by means of a pressure medium (hydraulic, pneumatic).
  • a brake module of a brake circuit is connected to the wheel or axle modules of the brake circuit assigned to it via the brake circuit data bus outlined above (7, 8). This also optionally takes over the voltage supply for the electrical components of the wheel modules and the sensors assigned to the wheel modules.
  • the power supply to the actuators themselves is fed directly to the respective power output stages.
  • the actuators of the first brake circuit are supplied with power from the energy circuit E1 and those of the second brake circuit from the energy circuit E2.
  • the brake modules 1, 2 of the respective brake circuit which each contain at least one microcomputer, the control of the assigned actuators of the brake circuit, the evaluation of the sensor signals and a plausibility for monitoring the sensor and control signals for this brake circuit are carried out.
  • the brake modules are supplied with voltage from both energy circuits E1 and E2, one of the energy circuits being switched over to the other in the event of a fault.
  • guide variables or manipulated variables for the wheel brakes are determined for the assigned wheel modules or axle modules, which are sent to the wheel or axle modules via the brake circuit data bus.
  • the application force or braking torque applied to the wheel brake is regulated.
  • the controller algorithms are calculated in the microcomputer of the brake modules and the controller output signal, ie the manipulated variable, is sent to the wheel or axle modules. Furthermore, the sensor signals determined in the wheel or axle modules are evaluated and further processed in the brake modules, the signals detected by the sensors being at least partially recorded, digitized and sent to the brake module via the brake circuit data bus in the wheel or axle modules , Examples of such sensor signals are the signals of a force sensor in the area of the wheel brake, a torque sensor for detecting the braking torque, a speed sensor, a sensor that detects the tire deformation, etc. If not all sensor sizes in the wheel or Axis modules detected, corresponding sensor signal inputs are provided in the brake modules.
  • the sensor signals are processed in the brake modules and possibly for errors, for example in the context of a
  • the brake modules are connected to further modules for determining the driver's request 10 and for driving dynamics control 11 via at least one further communication system 9, which in a preferred exemplary embodiment represents a vehicle infrastructure structure bus.
  • further modules 12, 13, 14, which represent further control systems such as steer-by-wire systems, etc. are connected to this communication system 9, which can also be designed redundantly for security reasons ,
  • the communication system 9 and the brake circuit data buses operate with different ones
  • the module for the driver's request 10 detects actuation signals of the parking brake 15 and the service brake pedal 16 via input signals 10a to 10f. le 1 and 2 as well as to the vehicle dynamics control .11 becomes. If required, the latter modulates, for example as part of an electronic stability program, an anti-lock control or a traction control system, the driver's requirements for the wheel-specific braking requirements, which in turn are transmitted to the brake modules 1 and 2 for adjustment via the communication system 9.
  • the modules 10 and 11 are also supplied with energy, if need be switchable, by both energy circuits El and E2.
  • the number of communication participants in the individual communication systems is reduced compared to known system architectures. This means that higher clock rates are possible for the individual data buses with the same data volume overall.
  • further systems such as steer-by-wire, active body control, shift-by-wire, etc. are connected to the vehicle infrastructure bus 9.
  • vehicle infrastructure bus 9 By sharing resources, synergies can be created compared to independent braking or steering systems.
  • networking of the individual systems makes new vehicle functions easier to implement or even possible in the first place.
  • Driver request acquisition for controlling a drive unit can be combined in a central driver request module which is constructed to be fault-tolerant (in the figure, for example, module 10).
  • a driving dynamics module 11 in addition to the higher-level brake control functions such as braking Power distribution, anti-lock control, traction control and electrical stability program on functions such as dynamic steering interventions, variable steering ratio and other functions for modifying the setpoints for the brake, steering, transmission, engine control, etc. depending on the driving state.
  • a control module in the vehicle for displaying driver information informs the driver of the operating and fault status of the braking system based on the operating status signals of the braking modules.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

L'invention concerne un système de commande électronique, destiné en particulier à un système de freinage de véhicule. Selon ce système, chaque circuit de freinage comprend un module de freinage auquel est associé au moins un actionneur. Une unité électronique locale est associée à chaque actionneur, aussi bien d'un point de vue structurel que logique, pour exécuter des fonctions d'amorçage et/ou d'évaluation spécifiques à des actionneurs et/ou à des capteurs, cette unité étant reliée par l'intermédiaire d'un bus de données local de circuit de freinage au module de freinage du circuit de freinage correspondant. Ce système comprend également un système de communication au moyen duquel les modules de freinage sont reliés entre eux, ainsi qu'avec au moins un module relatif à la demande du conducteur et au moins un autre module de commande destiné à définir une fonction de commande à l'extérieur du système de freinage du véhicule.
EP02727238A 2001-04-12 2002-03-16 Systeme de commande electronique, destine en particulier a un systeme de freinage de vehicule Withdrawn EP1379420A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10118263A DE10118263A1 (de) 2001-04-12 2001-04-12 Elektronisches Steuersystem, insbesondere für eine Fahrzeugbremsanlage
DE10118263 2001-04-12
PCT/DE2002/000973 WO2002083474A2 (fr) 2001-04-12 2002-03-16 Systeme de commande electronique, destine en particulier a un systeme de freinage de vehicule

Publications (1)

Publication Number Publication Date
EP1379420A2 true EP1379420A2 (fr) 2004-01-14

Family

ID=7681341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02727238A Withdrawn EP1379420A2 (fr) 2001-04-12 2002-03-16 Systeme de commande electronique, destine en particulier a un systeme de freinage de vehicule

Country Status (5)

Country Link
US (1) US20040015281A1 (fr)
EP (1) EP1379420A2 (fr)
JP (1) JP2004518583A (fr)
DE (1) DE10118263A1 (fr)
WO (1) WO2002083474A2 (fr)

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CN102897156A (zh) * 2012-10-22 2013-01-30 安徽省鸿运机械制造有限公司 一种车辆用智能缓速系统

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US7396088B2 (en) * 2003-09-29 2008-07-08 Haldex Brake Products Ab Power supply network for brake system
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CN102897156B (zh) * 2012-10-22 2015-09-30 安徽省鸿运机械制造有限公司 一种车辆用智能缓速系统

Also Published As

Publication number Publication date
JP2004518583A (ja) 2004-06-24
WO2002083474A3 (fr) 2003-02-06
DE10118263A1 (de) 2002-10-17
US20040015281A1 (en) 2004-01-22
WO2002083474A2 (fr) 2002-10-24

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