CN102019925B - General control method of whole electric automobile controller based on singlechip - Google Patents

General control method of whole electric automobile controller based on singlechip Download PDF

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Publication number
CN102019925B
CN102019925B CN 201010585815 CN201010585815A CN102019925B CN 102019925 B CN102019925 B CN 102019925B CN 201010585815 CN201010585815 CN 201010585815 CN 201010585815 A CN201010585815 A CN 201010585815A CN 102019925 B CN102019925 B CN 102019925B
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interface
controller
control
pwm
signal
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CN 201010585815
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CN102019925A (en
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李雪峰
谢勇波
蒋时军
王文明
刘文洲
王婉霞
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湖南南车时代电动汽车股份有限公司
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Abstract

The invention discloses a general control method of a whole electric automobile controller based on a singlechip. The whole electric automobile controller comprises a multifunctional embedded controller based on the singlechip and proper peripheral chips and a signal conditioning circuit provided according to the control requirements of the controller, wherein the controller comprises an analog/digital (A/D) interface, a pulse-width modulation (PWM) interface, an input/output (I/O) interface, a controller area network (CAN) interface, a serial communications interface (SCI) and a serial peripheral interface(SPI), and the PWM interface is used for driving an excitation module of an accelerated processing units (APU) system of a serial automobile and a parallel-serial automobile, transmitting a PWM signal with duty ratio variation of 0%-100% and amplitude of +15V and controlling an internal combustion engine and a motor accelerator after PWM filtration and control mode selection. The general design of the control method of the whole automobile controller is focused, so that the whole automobile controller can meet the control requirements of different drive systems.

Description

A kind of universal control method of SCM Based vehicle control unit of electric vehicle
Technical field
The invention belongs to battery-driven car car load control technology field, be specifically related to a kind of universal control method of SCM Based vehicle control unit of electric vehicle.
Technical background
Along with day by day rare of the energy, going from bad to worse of environment, electronlmobil more energy-conservation, more environmental protection arises.Electronlmobil and orthodox car relatively except will the control to traditional combustion engine, also need to increase to the unify control of energy storage system of electric drive trains.For making the normal smooth running of electronlmobil, combustion engine, electric drive trains are unified between the closed-centre system etc. must co-ordination, the effect of entire car controller solves just with the cooperation problem between the upper-part, generally speaking, entire car controller is by the car load operation information that collects as much as possible, judge by the operational analysis to information again, satisfy under the prerequisite of car load dynamic property and travelling comfort with assurance, to the mechanical, electrical drive system of internal combustion and closed-centre system optimal control.Give full play to the advantage of each parts, to improve fuel economy and discharging, reach the order ground of energy-conserving and environment-protective.Electronlmobil is divided into pure electric vehicle and hybrid vehicle two big classes by type of drive, and hybrid vehicle can be subdivided into three kinds of series, parallel and series-parallel connections again.Electronlmobil demand to entire car controller under different power driven modes is also different.
Under the current techniques, combustion engine, electric drive trains are unified and are mainly contacted by ripe, stable CAN network and entire car controller between the closed-centre system three big parts, to the running state and the control command accepted from entire car controller of entire car controller feedback when forepiece.But the drive pattern of special-purpose entire car controller adaptation is single, has reduced it and has used alerting ability, is unfavorable for the upgrading of car load product and the replacement of product, has prolonged product development cycle.
Along with people improve constantly the requirement of electronlmobil, move more steady, take more comfortable, more energy-conservation, more environmental protection has become the development tendency of electronlmobil, this just need be to driver's operation behavior (the pedal degree of depth, gear positions etc.), the mode of operation of car load operational mode and other parts of car load needs more sampling and the control of refinement, the information interchange with entire car controller certainly will get more and more between each parts like this, the communication interface of entire car controller, the I/O mouth, the A/D mouth, D/A mouths etc. need to receive more information, handle more multidata, single CAN bus architecture can not satisfy the functional requirement of entire car controller.
Summary of the invention
, use alerting ability low shortcoming not high at the operation stability that exists in the above-mentioned existing battery-driven car entire car controller technology, the invention provides a kind of universal control method of SCM Based vehicle control unit of electric vehicle, make entire car controller can adapt to demand for control between the different driving system.
The technical solution used in the present invention is: the universal control method of described SCM Based vehicle control unit of electric vehicle, comprise a kind of SCM Based multi-functional embedded controller and suitable peripheral chip and the signal conditioning circuit of arranging in pairs or groups according to the demand for control of controller, this controller has comprised A/D interface, PWM interface, I/O interface, CAN interface, SCI interface, SPI interface; Wherein the PWM interface is used for the driving of the excitation module of series connection car and series-parallel connection car APU system, be used for also that output duty cycle is 0%~100% variable, amplitude is+pwm signal of 15V, after PWM filtering, master mode selection, the mechanical, electrical machine oil door of internal combustion is controlled.
Comprehensive analyses of the present invention under above-mentioned each type of drive of electronlmobil to the demand of car load control resource, carried out the design of commonality control method by demand, because entire car controller hardware need not to develop again again, abundant interface can adapt to electronlmobil to collection and the output demand of signal, so, in the different driving mode development, can only need revise accordingly just and can use the carrying out of control policy.Shorten the time-to-market of whole-control system greatly, saved cost of development.
Description of drawings
Fig. 1 is functional block diagram of the present invention.
Fig. 2 is control flow chart of the present invention.
The specific embodiment
Further set forth the present invention below by the drawings and specific embodiments.
Accompanying drawing has provided one embodiment of the present of invention, the present invention relates to a kind of battery-driven car control method of finished as can be seen by accompanying drawing, universal control method for SCM Based vehicle control unit of electric vehicle, comprise a kind of SCM Based multi-functional embedded controller and suitable peripheral chip and the signal conditioning circuit of arranging in pairs or groups according to the demand for control of controller, this controller has comprised A/D interface, PWM interface, I/O interface, CAN interface, SCI interface, SPI interface; Wherein the PWM interface is used for the driving of the excitation module of series connection car and series-parallel connection car APU system, be used for also that output duty cycle is 0%~100% variable, amplitude is+pwm signal of 15V, after PWM filtering, master mode selection, the mechanical, electrical machine oil door of internal combustion is controlled.
As shown in Figure 1, be core with the microprocessor of 16 bit of freescale, according to peripheral chip and the signal conditioning circuit that it is suitable that the demand for control of entire car controller has been arranged in pairs or groups.This controller possesses independently kernel of two of principals and subordinates.Endorse in two independently each module is operated, realize data sharing between the double-core by memory management.In concrete utilization, primary processor is mainly used in doing the computing of control algorithm, is used for the interface module management as A/D result's scanning, CAN transmitting-receiving, SPI read-write etc. from treater.Software triggers interrupt function flexibly, can allow primary processor triggering coprocessor assist at any time and do corresponding interface management.The utilization of principal and subordinate processor has improved the operating efficiency of car load control program greatly.As shown in FIG., the input interface of car load pedal signal, voltage and current signal and temperature signal is connected to the A/D data transfer mouth of microprocessor; PWM excitation control signal and combustion engine, dynamo oil gate control signal wherein according to the difference of combustion engine to the control signal requirement, are selected the corresponding way of output by wire jumper by the outside modulate circuit output of microcontroller PWM Interface Matching; The IO signals such as start and stop state of contactless switch control, the control of fan heat management, state indication control, contactless switch state, driving position operating order and each parts input to the I/O data transfer mouth of microprocessor, dissimilar according to input/output signal, also can be easily the corresponding detection mode of selection and the way of output by wire jumper; 4 tunnel independent CAN passages, shown in figure, can constitute point-to-point flexibly or some network communication mode to multiple spot, finish effective transmission of control parameter and sharing of sensor signal, simultaneously, according to the difference of application occasion, can select to adopt optical fiber mode or cable mode to carry out communication, guarantee the safe and stable operation of whole-control system; The SCI interface is finished based on the program updates of bootloader with based on on-line parameter monitoring and the online data of freemaster and is revised by level conversion and the PC communication of RS232 chip; It is to the real-time timepiece chip operation or to storage operation that the SPI interface is selected by chip selection signal, when being implemented in the car load et out of order at that time the time read with preceding 10 seconds of fault in the record of car load running state information.
As shown in Figure 2, after entire car controller is finished the peripheral hardware initialization operation, base when being the control of 1ms by the cycle timer generation cycle.Control flow as shown in FIG., entire car controller is collected control parameters such as the degree of depth, direction signal, motor speed, electric current and voltage and each parts running state of current driver's pedal by signal input module, judge by fault processing module whether current car load operation is normal, provide fault category and fault level as mal, provide warning, limit merit and the three kinds of operational modes of stopping according to current fault level again.Matlab control program module is parsed the power demand of current car load according to operational mode by driver's pedal.Under the condition of the total external characteristics that satisfies combustion engine and motor, carrying capacity according to current closed-centre system, take into full account fuel economy and the emission performance of combustion engine, the advantage separately of performance combustion engine and motor is reasonably distributed to combustion engine and motor with the car load power demand that parses.Exported the control command of each parts at last by signal output module.

Claims (1)

1. the universal control method of a SCM Based vehicle control unit of electric vehicle, comprise a kind of SCM Based multi-functional embedded controller and suitable peripheral chip and the signal conditioning circuit of arranging in pairs or groups according to the demand for control of controller, this controller has comprised the A/D interface, the PWM interface, the I/O interface, the CAN interface, the SCI interface, wherein the PWM interface is used for the driving of the excitation module of series connection car and series-parallel connection car APU system, it is variable also to be used for output duty cycle 0%~100%, amplitude is+pwm signal of 15V, by PWM filtering, after master mode is selected, to combustion engine, the motor throttle is controlled, it is characterized in that, also comprise SPI interface and matlab control program module, it is to the real-time timepiece chip operation or to storage operation that described SPI interface is selected by chip selection signal, when being implemented in the car load et out of order at that time the time read with preceding 10 seconds of fault in the record of car load running state information, entire car controller is collected the degree of depth of current driver's pedal by signal input module, direction signal, motor speed, control such as electric current and voltage and each parts running state parameter, judge by fault processing module whether current car load operation is normal, provide fault category and fault level as mal, provide warning according to current fault level again, limit merit and the three kinds of operational modes of stopping; Matlab control program module is parsed the power demand of current car load according to operational mode by driver's pedal; Under the condition of the total external characteristics that satisfies combustion engine and motor, carrying capacity according to current closed-centre system, take into full account fuel economy and the emission performance of combustion engine, the advantage separately of performance combustion engine and motor, the car load power demand that parses is reasonably distributed to combustion engine and motor, exported the control command of each parts at last by signal output module.
CN 201010585815 2010-12-14 2010-12-14 General control method of whole electric automobile controller based on singlechip CN102019925B (en)

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CN102394605A (en) * 2011-11-23 2012-03-28 湖南南车时代电动汽车股份有限公司 Pulse generation method and device used for IGBT (insulated gate bipolar transistor) test
CN103802765B (en) * 2012-11-14 2016-09-07 北汽福田汽车股份有限公司 The entire car controller of a kind of electric automobile and there is its electric automobile
CN104210494B (en) * 2013-05-30 2017-11-03 大陆汽车电子(长春)有限公司 Control method for vehicle and device
CN103386935B (en) * 2013-07-25 2016-03-02 株洲南车时代电气股份有限公司 A kind of control method of finished and entire car controller
CN103407361B (en) * 2013-08-26 2015-12-23 西北工业大学 A kind of ISG height hybrid power automobile power assembly system and control method thereof
JP6369695B2 (en) * 2015-08-26 2018-08-08 トヨタ自動車株式会社 Digital filter and vehicle driving force control device
CN108762234B (en) * 2018-06-11 2021-05-18 北京经纬恒润科技股份有限公司 Vehicle body controller and control method thereof

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Inventor after: Guo Shuying

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Inventor after: Wang Wenming

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Address after: 412007 Liyu Industrial Park, Tianyuan District, Zhuzhou City, Hunan Province

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