CN100428620C - Vehicle electric booster steering system controller - Google Patents
Vehicle electric booster steering system controller Download PDFInfo
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- CN100428620C CN100428620C CNB2006101137098A CN200610113709A CN100428620C CN 100428620 C CN100428620 C CN 100428620C CN B2006101137098 A CNB2006101137098 A CN B2006101137098A CN 200610113709 A CN200610113709 A CN 200610113709A CN 100428620 C CN100428620 C CN 100428620C
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Abstract
The force-assistance executor is a DC permanent magnet motor with brushes and supplies by 12 V battery system. The controller consists of micro-controller module, signal processing module, output control module, power supply module, relay with its driver module, H bridge module, grid driver module and motor current testing module. The characteristic of this invention is that the H bridge module adopts two P-trench type power electronic devices and two N-trench types. The source electrodes of the former lead to the positive terminal of the battery while the latter lead to the negative. The drain electrodes of each group of P type electronic devices are jointed to the drains of the same group of N type. Thus, the power supply module of the grid driver module needs no voltage-raising module. This simplifies the structure of the controller, lowers its cost and raises its reliability.
Description
Technical field
The present invention relates to a kind of control device of vehicle electric servo steering system, specifically, is to be the electric booster steering system controller of DC permanent magnet brush motor by 12V battery system power supply, power-assisted actuator.
Background technology
Electric boosting steering system has that energy-saving and environmental protection, power-assisted size change with the speed of a motor vehicle and assist characteristic is revised characteristics such as convenient, is emerging in recent years vehicle booster steering.It by electronic-controlled installation control assist motor, adjusts motor torque according to turn signal on the steering wheel and vehicle speed signal, and the power-assisted that changes with the speed of a motor vehicle is provided, and turns to driver assistance person.Wherein, electronic-controlled installation is the core component of this system, and its performance quality directly exerts an influence to force aid system and vehicle performance.
At present, extensively adopt the DC permanent magnet brush motor as the power-assisted actuator in the electric boosting steering system.According to the requirement of electric boosting steering system, often adopt the H bridge circuit of forming by four N channel-type power electronic device to realize control to this assist motor to assist motor control.For example, at present just adopted this modular structure in the used electric booster steering system controller on prosperous river Suzuki the Big Dipper passenger car of entrucking listing at home.The shortcoming of this modular structure is that need increase the power supply boost module in addition in the power module of controller, are used to drive two N channel-type power electronic device near the battery feed positive terminal.Can make the modular structure complexity like this, cost increases.Simultaneously, also there is certain defective in this modular structure aspect reliability, when the 12V storage battery because of car on during the big undertension of power consumption equipment power, the gate drive voltage deficiency that this extra power supply boost module provides is so that the fully reliable conducting of power electronic device, increased its conducting loss, cause the controller caloric value to strengthen, even cause relevant components from being damaged.Therefore, this module must adopt cooling measure preferably, can increase the cost of controller like this.Even and adopted good module protection and cooling measure, owing to the heating of power electronic device increases energy loss, the efficient of Electric Machine Control also descends to some extent.
Summary of the invention
The objective of the invention is to design a kind of simple in structure, with low cost, reliable operation, be used for the controller of the DC permanent magnet brush motor of vehicle electric servo steering system.
For achieving the above object, the electric booster steering system controller that the present invention proposes is made up of micro controller module, signal processing module, output control module, power module, relay and driver module thereof, H bridge module, grid electrode drive module, current of electric detection module, state monitoring module, it is characterized in that: the H bridge module adopts two P channel-type power electronic device and two N channel-type power electronic device.
For achieving the above object, in the controller of the present invention, the source electrode of two P channel-type power electronic device is received the battery positive voltage exit, and the source electrode of two N channel-type power electronic device is received the battery terminal negative exit.These four power electronic device are divided into two groups, are made up of a N channel-type power electronic device and a P channel-type power electronic device for every group, and the drain electrode of the P channel-type power electronic device in links to each other with the drain electrode of N channel-type power electronic device on the same group.Two leading-out terminals of DC permanent magnet brush motor are connected across respectively on the common port of two groups of power electronic device, constitute the link circuit of motor, H bridge module and storage battery.
For achieving the above object, the present invention has adopted a kind of general grid electrode drive module according to the characteristics of N raceway groove and P channel-type power electronic device drive controlling, and the control signal of this module is provided by microcontroller.
For achieving the above object, in the controller of the present invention, no longer need the power supply boost module in the supply module of grid electrode drive module, avoid the power supply boost module that increases to influence the performance of H bridge module or the reliability of work, saved cost simultaneously again because of usefulness or failure problems.
Description of drawings
Fig. 1 is the structured flowchart of electric booster steering system controller application system of the present invention (is example with the steering spindle booster type).
Fig. 2 is the structured flowchart of electric booster steering system controller inner function module of the present invention and outside relevant components and parts thereof.
Fig. 3 is the H bridge module of electric booster steering system controller of the present invention and the structured flowchart of outside relevant components and parts thereof.
Fig. 4 is electric boosting steering system motor-driven H bridge module schematic diagram commonly used.
Symbol description: 1-steering wheel; The 2-steering column; The steering gear of 3-mechanical type; The 4-deceleration device; The 5-rotation direction sensor; 6-electric motor clutch assembly; The 7-controller; The 8-storage battery; The 9-vehicle speed sensor; The 10-ignition switch; Other relevant transducers of 11-; The 12-electromagnetic clutch; The 13-motor; The 14-malfunction indicator lamp; The 15-micro controller module; The 16-signal processing module; The 17-output control module; The 18-power module; The 19-relay driving module; The 20-relay; The 21-grid electrode drive module; The 22-H bridge module; The 23-state monitoring module; 24-current of electric detection module; The 25-wheel.
Embodiment
Followingly the specific embodiment of the present invention is described with reference to accompanying drawing.
The structure of electric booster steering system controller application of the present invention system mainly is made up of steering wheel 1, steering column 2, mechanical type steering gear 3, deceleration device 4, rotation direction sensor 5, motor assembly 6, controller 7, storage battery 8, vehicle speed sensor 9, deflecting roller 25 as shown in Figure 1.On steering column 2, rotation direction sensor 5 is installed, be used for detecting the steering state signal of pilot control steering wheel 1; Simultaneously, on steering column 2, the lower end of rotation direction sensor 5 inserted deceleration device 4.The motor assembly of being made up of assist motor 13 and electromagnetic clutch 12 (referring to Fig. 2) 6 links to each other with the mechanical steering system by deceleration device 4, is used to provide power steering.Controller 7 detects the turn signal of rotation direction sensors 5 and the vehicle speed signal of vehicle speed sensor 9, judges steering state and by tabling look-up or calculating, control motor 13 provides corresponding power steering according to these signals.The electric energy of controller 7 is from the vehicle electric power system, comprise storage battery 8 and with storage battery generator coupled (not shown).
The internal structure of controller 7 of the present invention as shown in Figure 2.Signal processing module 16 is connected with ignition switch etc. with external sensor, and converts the signal that these transducers and ignition switch are sent here to micro controller module 15 receivable signals after treatment.These signals comprise steering-wheel torque and/or steering wheel angle signal, vehicle speed signal, engine ignition signal and/or engine rotational speed signal etc.
As shown in Figure 3, motor-driven H bridge module 22 of the present invention is made up of Q1, Q2, Q3 and four power electronic device of Q4, and wherein Q1 and Q2 are the P channel-type, and Q3 and Q4 are the N channel-type.The source electrode of two P channel-type power electronic device Q1, Q2 is received the battery positive voltage exit, and the source electrode of two N raceway groove power electronic device Q3, Q4 is received the battery terminal negative exit.These four power electronic device are divided into two groups, Q1 and Q3 are one group, Q2 and Q4 are one group, and every group by a N channel-type power electronic device and a P channel-type power electronic device, and the drain electrode of P channel-type power electronic device links to each other with the drain electrode of N channel-type power electronic device.Two leading-out terminals of DC permanent magnet brush motor are connected across respectively on the common port of two groups of power electronic device, constitute the link circuit of motor, H bridge module and storage battery.
Traditional electric booster system motor-driven H bridge module adopts four N channel-type power electronic device as shown in Figure 4, and these four power electronic device are divided into two groups, and a, c pipe are one group, and b, d pipe are one group.The drain electrode of a, b pipe links to each other with the positive source exit, and the source electrode of c, d pipe links to each other with the power cathode exit, and the source electrode of a, b pipe links to each other with the drain electrode of c, d pipe respectively.Two leading-out terminals of DC permanent magnet brush motor are connected across respectively on the intermediate point of two groups of power electronic device, constitute the link circuit of motor, H bridge and storage battery.
For N channel-type power electronic device, needing to add between its grid and source electrode certain forward voltage can conducting, and electric current flows to source electrode from the drain electrode of power electronic device during conducting.And for P channel-type power electronic device, needing to add between its grid and source electrode certain reverse voltage can conducting, and electric current flows to drain electrode from the source electrode of power electronic device during conducting.
For the H bridge module of four N channel-types of traditional employing power electronic device, suppose the electric current motor of flowing through from left to right, then need open a, d pipe simultaneously.Because d pipe source ground, the 12V grid voltage can fully make its unlatching; But after a pipe was opened, its source voltage reached 12V, and must provide the voltage more than the 20V that it is fully opened this moment to its grid.In like manner, when electric current is flowed through motor from right to left, manage abundant conducting, also must provide voltage more than the 20V to its grid for making b.Therefore, in the driver module of the H bridge module of traditional four N channel-types of employing power electronic device pipe charge pump must be arranged, 12V battery tension pump is raised to about 22V, this not only makes the driver module circuit design of H bridge module become complicated, and charge pump is operated in the HF switch state, increases the interference of the driver module circuit of H bridge module to external environment condition and controller internal circuit.
H bridge module for two P channel-types of employing of the present invention and two N channel-type power electronic device, if will make the abundant conducting of certain P channel-type power electronic device of brachium pontis on it, then only needing its gate voltage signal of control is zero getting final product, and need not to boost by charge pump.
The switch drive module of four power electronic device of the present invention adopts the driving amplifying circuit of same structure, provides the power electronic device switch needed drive current, and they are included in the grid electrode drive module 21.If switch drive module is connected the grid and the storage battery ground wire of power electronic device, corresponding Q1 or Q2 are open-minded, and Q3 or Q4 turn-off; If switch drive module is connected the grid and the battery feed positive pole of power electronic device, corresponding Q1 or Q2 turn-off Q3 or Q4 conducting.Four power electronic device can be opened or be turn-offed by grid electrode drive module 21 drivings according to predefined certain sequential in the micro controller module 15, and to realize the output power-assisted of control assist motor 13, driver assistance person turns to.
Also be provided with a power module 18 in the controller 7 of the present invention, be used for providing required working power of each module of controller and battery feed after treatment, also provide the corresponding work power supply simultaneously for rotation direction sensor 5 and electromagnetic clutch 12.
In order to ensure the reliability service of controller 7, a relay 20 and driver module 19 thereof have been increased in the controller 7 of the present invention.Whether the internal state and the external input signal of the controller that is provided according to state monitoring module 23 by micro controller module 15 comprehensively contrast, working properly to judge system.If system is once being judged as malfunction, then whether take measures to disconnect the power-assisted of 13 pairs of steering of motor according to the extent of injury decision of fault.The disconnection motor can be realized by three kinds of methods the power-assisted of steering: cut off motor control loop, disconnect electromagnetic clutch 12 and control relay driver module 19 shutoff relays 20.Selecting for use of these methods is needs according to the extent of injury and client, realizes by program setting in micro controller module 15.After controller 7 detects the system failure, light, remind the driver to note by output control module 17 control fault indicator lights 14.The driver module that also includes electromagnetic clutch 12 in the output control module 17 is in order to the adhesive or the disengagement of control electromagnetic clutch 12.
In sum, two P channel-type power electronic device and two N channel-type power electronic device have been adopted in the H bridge module of electric booster steering system controller 7 of the present invention, thereby omitted boost module, reached structure, the cost that reduces controller of simplifying controller, the purpose that improves the reliability of controller.
Claims (4)
1, a kind of vehicle electric booster steering system controller by the power supply of 12V battery system, by micro controller module (15), signal processing module (16), output control module (17), power module (18), relay (20) and driver module (19) thereof, H bridge module (22), grid electrode drive module (21), current of electric detection module (24), state monitoring module (23) is formed, the H bridge module (22) of this electric booster steering system controller adopts two P channel-type power electronic device and two N channel-type power electronic device, it is characterized in that the gate voltage signal by control P raceway groove power electronic device is zero to be the abundant conducting of this P raceway groove power electronic device of may command.
2, a kind of vehicle electric booster steering system controller according to claim 1 by the power supply of 12V battery system, it is characterized in that, the source electrode of two P channel-type power electronic device connects the positive source exit, and the source electrode of two N channel-type power electronic device connects the power cathode exit.
3, a kind of vehicle electric booster steering system controller according to claim 1 by the power supply of 12V battery system, it is characterized in that, four power electronic device that constitute the H bridge module are divided into two groups, form by a N channel-type power electronic device and a P channel-type power electronic device for every group, and the drain electrode of P channel-type power electronic device with on the same group in the drain electrode of N channel-type power electronic device link to each other.
4, a kind of vehicle electric booster steering system controller according to claim 1 by the power supply of 12V battery system, it is characterized in that, two leading-out terminals of DC permanent magnet brush motor are connected across respectively on the common port of two groups of power electronic device, constitute the link circuit of motor, H bridge module and storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101137098A CN100428620C (en) | 2006-10-13 | 2006-10-13 | Vehicle electric booster steering system controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101137098A CN100428620C (en) | 2006-10-13 | 2006-10-13 | Vehicle electric booster steering system controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1937397A CN1937397A (en) | 2007-03-28 |
| CN100428620C true CN100428620C (en) | 2008-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101137098A Expired - Fee Related CN100428620C (en) | 2006-10-13 | 2006-10-13 | Vehicle electric booster steering system controller |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009127660A2 (en) * | 2008-04-17 | 2009-10-22 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Drive circuit for a dc motor, comprising an h-bridge and a motor braking circuit |
| CN102930604B (en) * | 2011-08-09 | 2015-09-02 | 广州市俐康电子科技有限公司 | A kind of ticket-issuing device circuit and H-bridge drive circuit thereof |
| CN102522933B (en) * | 2011-11-29 | 2014-03-05 | 中国航天时代电子公司 | Drive circuit for direct-current motor |
| CN105262386A (en) * | 2015-11-24 | 2016-01-20 | 广东轻工职业技术学院 | Electric control system for integrated motor |
| CN109515209A (en) * | 2018-10-18 | 2019-03-26 | 南京世界村汽车动力有限公司 | A kind of new-energy automobile electric-control system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056965A (en) * | 1990-05-31 | 1991-12-11 | 江允良 | Three-phase field-controlled bridge-type dc-to-ac converter |
| JPH1168537A (en) * | 1997-08-11 | 1999-03-09 | Nec Corp | Mis-operation prevention circuit for h-bridge circuit |
| US6388855B1 (en) * | 1999-04-07 | 2002-05-14 | Nec Corporation | Transistor protecting circuit with enhancing circuit for H bridge circuit |
| CN2645999Y (en) * | 2003-09-09 | 2004-10-06 | 重庆驰骋轻型汽车部件股份有限公司 | Electric power assisted diverter of automobile |
| US20050051853A1 (en) * | 2003-09-05 | 2005-03-10 | Baum David R. | Interdigitated layout methodology for amplifier and H-bridge output stages |
| US20060011974A1 (en) * | 2004-07-14 | 2006-01-19 | Sameer Pendharkar | Drain-extended MOS transistors with diode clamp and methods for making the same |
-
2006
- 2006-10-13 CN CNB2006101137098A patent/CN100428620C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056965A (en) * | 1990-05-31 | 1991-12-11 | 江允良 | Three-phase field-controlled bridge-type dc-to-ac converter |
| JPH1168537A (en) * | 1997-08-11 | 1999-03-09 | Nec Corp | Mis-operation prevention circuit for h-bridge circuit |
| US6388855B1 (en) * | 1999-04-07 | 2002-05-14 | Nec Corporation | Transistor protecting circuit with enhancing circuit for H bridge circuit |
| US20050051853A1 (en) * | 2003-09-05 | 2005-03-10 | Baum David R. | Interdigitated layout methodology for amplifier and H-bridge output stages |
| CN2645999Y (en) * | 2003-09-09 | 2004-10-06 | 重庆驰骋轻型汽车部件股份有限公司 | Electric power assisted diverter of automobile |
| US20060011974A1 (en) * | 2004-07-14 | 2006-01-19 | Sameer Pendharkar | Drain-extended MOS transistors with diode clamp and methods for making the same |
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| Publication number | Publication date |
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| CN1937397A (en) | 2007-03-28 |
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Granted publication date: 20081022 Termination date: 20181013 |