CN104340265B - Electronic control apparatus - Google Patents
Electronic control apparatus Download PDFInfo
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- CN104340265B CN104340265B CN201410359714.1A CN201410359714A CN104340265B CN 104340265 B CN104340265 B CN 104340265B CN 201410359714 A CN201410359714 A CN 201410359714A CN 104340265 B CN104340265 B CN 104340265B
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- temperature
- threshold value
- self
- normal termination
- insurance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
- B62D5/0484—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures for reaction to failures, e.g. limp home
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Power Steering Mechanism (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
An electronic control apparatus. Even a power supply cannot be self-protected due to abnormity and temperature estimation treatment is interrupted, faults caused by overheating of an electric motor and the like can also be prevented. Control output for controlling the electric motor is limited by comparing an estimated estimation temperature of the electric motor based on a measured value of a thermistor by a temperature estimation portion with an overheating protection temperature threshold stored in a threshold storage portion. When an IG switch is disconnected, the power supply is self-protected via a power supply self-protection portion, an already normally terminated order is written into a normal termination storage portion when specified conditions are subsequently satisfied, and self-protection of the power supply based on the power supply self-protection portion is terminated. When the IG switch is connected, if the already normally terminated order is stored in the normal termination storage portion, a normal threshold is overwritten into the threshold storage portion as the overheating protection temperature threshold, and if the already normally terminated order is not stored in the normal termination storage portion, an abnormal threshold is overwritten into the threshold storage portion.
Description
Technical field
The present invention relates to a kind of electronic-controlled installation, described electronic-controlled installation is based on being arranged on the attached of Temperature estimate object
The measured value of near Temperature measuring section, estimates the temperature of Temperature estimate object, after power switch disconnects, also self-insurance power supply, continues
The estimation of the temperature of continuous Temperature estimate object.
Background technology
For example, in the electricity of the electric motor driven power steering that by electro-motor, the steering control system of automobile is given with steering auxiliary force
In sub- control device, as disclosed in patent document 1～4, there is following device: in the temperature being unable to direct measurement object
In the case of, the measured value of the Temperature measuring section based on the vicinity being arranged on object, estimate the temperature of object.In this electricity
In sub- control device, when power switch is connected, based on estimate temperature carry out electro-motor overtemperature protection control, but in order to
Also from overheated middle protection electro-motor after power switch disconnects or after abending, take various countermeasures.
The electronic-controlled installation of patent document 1 possesses: power supply self-insurance part, self-insurance power supply；And cpu, according to flowing through electricity
The current value of motivation, to estimate the temperature of motor, based on this estimation temperature, determines the current limit value of electro-motor.Then,
After blocking the power supply supply to motor, cpu enters row operation based on the estimation temperature of motor to the self-insurance time, through being somebody's turn to do
Period till the self-insurance time, power supply self-insurance part self-insurance power supply, cpu continues Temperature estimate process etc..
The electronic-controlled installation of patent document 2 possesses: power supply self-insurance part, can be by key switch (key switch)
The power supply drawing oneself up after carrying out power on stops；And Temperature estimate part, estimate the temperature of electro-motor, estimated based on this
Meter temperature carries out the temperature control of electro-motor.Then, even if passing through key switch input power stop signal, estimating temperature
Do not become the period of below setting, power supply self-insurance part self-insurance power supply, Temperature estimate part continues Temperature estimate and processes.
The electronic-controlled installation of patent document 3 possesses: Temperature estimate part, and the detected value based on temperature sensor estimates electricity
Dynamic motor and the temperature of heater；And eeprom.Then, when flame-out (engine stall) engine stops, by temperature
The estimation thermograph of estimation section to eeprom, restart behind steering wheel (handle) operation when, in TEMP
Among the detection temperature of device and the estimation temperature of record in eeprom, a side of high temperature is set to enter for Temperature estimate part
The initial value that trip temperature is estimated.
The electronic-controlled installation of patent document 4 is except power supply self-insurance part as patent document 2 and Temperature estimate part
Outside, it is also equipped with Temperature estimate state storage component and initial value set parts.Temperature estimate state storage component is estimated in temperature
Before meter part stops, would indicate that the data Cun Chudao storage part of the regulation of state that Temperature estimate is processed.Initial value configuration part
Part when ignition switch (ignition switch) is turned on again and Temperature estimate part has carried out work, based on storage part
The data setting Temperature estimate value of regulation initial value.
Prior art literature
Patent document
[patent document 1] (Japanese) Patent Laid-Publication 6-247324 publication
[patent document 2] (Japanese) JP 2002-362393 publication
[patent document 3] (Japanese) JP 2005-263010 publication
[patent document 4] (Japanese) No. 2008/153162 publication of table again
In the electronic-controlled installation of above-mentioned patent document 1 and 2, after power switch disconnects, self-insurance power supply, continues temperature
Degree estimation is processed.But, now, if such certain such as broken string of the dismounting of such as battery and power line occurs extremely, and become
The self-insurance of the power supply of device must be electronically controlled, then lead to Temperature estimate to process and be interrupted.Then, if in this short time
Power switch is switched on afterwards, then suitably can not carry out overtemperature protection control, exist overtemperature protection object (electro-motor) due to
The overheated and worry that breaks down.In this regard, in above-mentioned patent document 3 and 4, after power switch is switched on, based on last time
Stopping before Temperature estimate information, set Temperature estimate initial value.
Content of the invention
The problem of the present invention is to provide a kind of electronic-controlled installation, even if become due to exception can not for described control device
Carry out the self-insurance of power supply and Temperature estimate processes and is interrupted it is also possible to prevent overtemperature protection object due to overheated and break down.
The electronic-controlled installation of the present invention possesses: control unit, based on the input information of regulation, control object is controlled
System；Temperature measuring section, is arranged on the vicinity of Temperature estimate object；Temperature estimation section, based on the measured value of Temperature measuring section, estimates
The temperature of Temperature estimate detection object；Threshold value storage part, stores overtemperature protection temperature threshold；Export-restriction portion, based on to temperature
The estimation temperature of estimator and the result that the overtemperature protection temperature threshold of storage is compared in threshold value storage part, limit and are used for
The control output that control unit is controlled to control object；Power supply self-insurance portion, self-insurance power supply after power switch disconnects；Normal knot
Bundle storage part, the order of storage normal termination；Normal termination write section, the order of normal termination is written to normal termination
Storage part；Condition criterion portion, determines whether to meet the estimation temperature of measured value based on Temperature measuring section and temperature estimation section
And the condition of the regulation setting；Normal termination confirmation portion, whether confirming is stored with normal termination storage part has normally been tied
The order of bundle；And threshold value write section, when will be normal threshold value or abnormal when threshold value be written to as overtemperature protection temperature threshold
Threshold value storage part, when described abnormal threshold value be than this when normal threshold value tighter detect the threshold value of superheat state.Then, in electricity
After source switch disconnects, in the case that condition criterion portion is judged to meet the condition of regulation, normal termination write section will be normal
The order terminating is written to normal termination storage part, and power supply self-insurance portion stops the self-insurance of power supply.Additionally, connecting in power switch
When, normal termination confirmation portion confirm to be stored with normal termination storage part normal termination order in the case of, threshold value
When write section will be normal, threshold value overrides threshold value storage part, confirms not depositing in normal termination storage part in normal termination confirmation portion
In the case of the storage order of normal termination, threshold value during exception is override threshold value storage part by threshold value write section.
According to above-mentioned, even if due to abnormal generation, become to carry out the self-insurance of power supply, Temperature estimate process by
Disconnected, also because power switch behind connection when, normal termination storage part does not store the order of normal termination, because
This, when abnormal, threshold value is stored in threshold value storage part as overtemperature protection temperature threshold.Thus, based on to temperature estimation section
What when estimation temperature and exception, threshold value compared controls to control object as a result, it is possible to strictly limit for control unit
The control output of system, prevents overtemperature protection object from breaking down due to overheated.
Additionally, in the present invention, in above-mentioned electronic-controlled installation can also be, if threshold value overrides threshold when by exception
Value storage part rises through the stipulated time, then when threshold value write section will be normal, threshold value overrides threshold value storage part.
Additionally, in the present invention, can also be that this electronic-controlled installation is also equipped with above-mentioned electronic-controlled installation: from
Guarantor's time setting part, the estimation temperature difference of the measured value based on Temperature measuring section and temperature estimation section, to power supply self-insurance portion certainly
The self-insurance time protecting power supply is set, and condition criterion portion judges to disconnect and power supply self-insurance portion's self-insurance power supply in power switch
The self-insurance time whether is have passed through, as the condition of regulation under state.
Additionally, in the present invention, can also be that condition criterion portion judges Temperature measuring section in above-mentioned electronic-controlled installation
Measured value and the estimation temperature difference of temperature estimation section whether become less than setting, as the condition of regulation.
And then, in the present invention, above-mentioned electronic-controlled installation can also be the electric motor driven power steering control carried on vehicle
Device processed.Now, control object and Temperature estimate object are made up of electro-motor, and described electro-motor is by electric motor driven power steering control
Device processed controls its driving, and to produce steering auxiliary force, power switch is made up of the ignition switch of vehicle.
According to the present invention, provide a kind of electronic-controlled installation, even if become can not due to abnormal for described electronic-controlled installation
Carry out the self-insurance of power supply, Temperature estimate processes and is interrupted, and also can prevent object from breaking down due to overheated.
Brief description
Fig. 1 is the block diagram of the electronic-controlled installation of embodiments of the present invention.
Fig. 2 a is the flow chart of the action of the electronic-controlled installation representing Fig. 1.
Fig. 2 b is the flow chart of the action of the electronic-controlled installation representing Fig. 1.
Fig. 3 is the flow chart of the details of auxiliary (assist) control process representing Fig. 2 a.
Fig. 4 is the flow chart of the details of self-insurance time setting processing representing Fig. 2 b.
Fig. 5 be the electronic-controlled installation of Fig. 1 normal when time diagram.
Fig. 6 is the time diagram during exception of the electronic-controlled installation of Fig. 1.
Fig. 7 is the flow chart of the action of the electronic-controlled installation representing other embodiments.
Label declaration
2 power supply self-insurance portions
5 thermistors
6 motor control part
7 export-restriction portions
8 temperature estimation section
9 threshold value storage parts
10 self-insurance time setting parts
11 normal termination storage parts
11a normal termination mark
12 normal termination write sections
13 condition criterion portions
14 normal termination confirmation portions
15 threshold value write sections
18 ig (igniting) switch
20 electro-motors
100 electronic-controlled installations
Specific embodiment
Hereinafter, with reference to the accompanying drawings of embodiments of the present invention.In the various figures, to identical part or corresponding part
Give identical label.
First, the structure of the electronic-controlled installation 100 of present embodiment is described with reference to Fig. 1.
Fig. 1 is the block diagram of electronic-controlled installation 100.Electronic-controlled installation 100 is by the electric motor driven power steering system of automobile
200 ecu being used (electric power-steering controller) are constituted.Electronic-controlled installation 100 is driven by the electric power of battery 30
Dynamic electro-motor 20, gives steering auxiliary force to the steering control system of automobile.
In electronic-controlled installation 100, possess and have: microcomputer (micro computer) 1, power supply self-insurance portion 2, horse
Reach drive division 3, current detecting part 4 and thermistor 5.In microcomputer 1, possess and have: motor control part 6, output limit
Portion 7 processed, temperature estimation section 8, threshold value storage part 9, self-insurance time setting part 10, normal termination storage part 11, normal termination write
Portion 12, condition criterion portion 13, normal termination confirmation portion 14, threshold value write section 15, threshold value confirmation portion 16 and time measurement department
17.
Supply electric power from battery 30 via ig (igniting) switch 18 to electronic-controlled installation 100.By with ig switch 18 not
Same path, supplies electric power from battery 30 to motor driving part 3.
The steering moment of torsion that motor control part 6 is turned to from torque sensor (not shown) input, and from (not shown)
Vehicle speed sensor inputs speed.Motor control part 6, based on the steering moment of torsion being inputted and speed, sets for controlling electro-motor
20 current instruction value (controlling output).
Motor driving part 3 based on the current instruction value inputting via export-restriction portion 7 from motor control part 6, by electric current
It flow to electro-motor 20, drive electro-motor 20.Current detecting part 4 detection flow to the current value of electro-motor 20, output
To motor control part 6.Motor control part 6 based on the current value flowing to electro-motor 20, via motor driving part 3 to electronic horse
Reach 20 and carry out feedback control.
Motor control part 6 is an example of the present invention " control unit ".Electro-motor 20 is that " it is right to control for the present invention
As " example.
Thermistor 5 is arranged on the vicinity of electro-motor 20.Measured value (the temperature based on thermistor 5 for the temperature estimation section 8
Degree), estimate the temperature of electro-motor 20.Thermistor 5 is an example of the present invention " Temperature measuring section ".Electro-motor 20
It is an example of the present invention " Temperature estimate object ".
Threshold value storage part 9 is made up of non-volatile memory.Threshold value storage part 9 stores in order to from overheated middle guarantor
Protect electro-motor 20 and detect the overtemperature protection temperature threshold of this superheat state.Threshold value or different when threshold value write section 15 will be normal
When often, threshold value is written to threshold value storage part 9 as overtemperature protection temperature threshold, when described abnormal threshold value be than this normal when threshold value
Tighter detect the threshold value of superheat state.
Export-restriction portion 7 based on the estimation temperature to temperature estimation section 8 and in threshold value storage part 9 storage overtemperature protection
The result that temperature threshold compares, limits current instruction value electro-motor 20 being controlled for motor control part 6.
Electro-motor 20 or overtemperature protection object.
Supply electric power by switching 18 different paths from ig from battery 30 to power supply self-insurance portion 2.In ig switch 18 disconnection
Afterwards, power supply self-insurance portion 2 carries out self-insurance to the power supply of power control 100.Ig switch 18 is the present invention " power switch "
One example.
By power supply self-insurance portion 2 just in the period of self-insurance power supply after ig switch 18 disconnects, by thermistor 5 and temperature
Estimator 8, the Temperature estimate continuing electro-motor 20 is processed.
Carried out by motor control part 6, export-restriction portion 7, motor driving part 3, current detecting part 4 and electro-motor 20
, for producing the auxiliary control process of steering auxiliary force, carried out when ig switch 18 is connected, when ig switch 18 disconnects not
By carry out.
The measured value based on thermistor 5 for the self-insurance time setting part 10 and the estimation temperature of temperature estimation section 8, in ig switch
After 18 disconnect, set to by the self-insurance time of power supply self-insurance portion 2 self-insurance power supply.
Normal termination storage part 11 is made up of non-volatile memory.In normal termination storage part 11, just it is provided with
The often region of end mark 11a.Normal termination write section 12 as described below, by normal termination mark 11a is opened, thus
The order of normal termination is written to normal termination storage part 11.
Condition criterion portion 13 as described as follows, determines whether to meet the measured value based on thermistor 5 and temperature is estimated
The estimation temperature in meter portion 8 and the condition of regulation that sets.It is judged to meet the feelings of the condition of regulation in condition criterion portion 13
Under condition, normal termination mark 11a is opened by normal termination write section 12, and power supply self-insurance portion 2 stops the self-insurance of power supply.
Normal termination confirmation portion 14, when ig switch 18 is connected, confirms whether be stored with normal termination storage part 11
The order of normal termination, that is, normal termination mark 11a whether open.
Confirm the order of normal termination that is stored with normal termination storage part 11 in normal termination confirmation portion 14
In the case of, when threshold value write section 15 will be normal, threshold value overrides threshold value storage part 9.Additionally, confirming in normal termination confirmation portion 14
In the case of not storing the order of normal termination in normal termination storage part 11, threshold value write section 15 is by threshold value during exception
Override threshold value storage part 9.
Threshold value confirmation portion 16 confirms the overtemperature protection temperature threshold storing in threshold value storage part 9.Time measurement department 17
The time of following regulations is measured.
Then, reference picture 2a～Fig. 6 illustrates the action of electronic-controlled installation 100.
Fig. 2 a and Fig. 2 b is the flow chart of the action representing electronic-controlled installation 100.Fig. 3 is the step representing Fig. 2 a
The flow chart of the details of auxiliary control process of s15.Fig. 4 is the thin of the self-insurance time setting processing of step s18 representing Fig. 2 b
The flow chart of section.Fig. 5 be electronic-controlled installation 100 normal when time diagram.When Fig. 6 is the exception of electronic-controlled installation 100
Time diagram.
By the microcomputer of Fig. 1, each several part is controlled, thus executing each process of Fig. 2 a～Fig. 4.
First, if ig switch 18 is switched on (step s1, Fig. 5 of Fig. 2 a and the t1 of Fig. 6), it is electronically controlled device
The initial treatment (step s2 of Fig. 2 a) of 100 each several part.The replacement of the power supply via ig switch 18 is comprised in this initial treatment
(reset) (with reference to Fig. 5 and Fig. 6).If the initial treatment of each several part completes, (beginning) power supply is opened in power supply self-insurance portion 2
Self-insurance (step s3, Fig. 5 of Fig. 2 a and the t2 of Fig. 6).
Then, normal termination confirmation portion 14, with reference to normal termination storage part 11, confirms whether normal termination mark 11a is to beat
Open (step s4 of Fig. 2 a).If here, normal termination mark 11a is to open (step s4 of Fig. 2 a: "Yes"), threshold value write section
15 threshold values when will be normal are written to threshold value storage part 9 (step s5 of Fig. 2 a) as overtemperature protection temperature threshold.
Then, the normal termination mark 11a of normal termination storage part 11 is rewritten as closing (figure by normal termination write section 12
Step s8, Fig. 5 of 2a and the t3 of Fig. 6).Then, the measured value based on thermistor 5 for the temperature estimation section 8, estimates electro-motor
20 temperature (the Temperature estimate process of step s9 of Fig. 2 a, the t4 of Fig. 5 and Fig. 6).Now, Temperature estimate initial value be set to right
The measured value of thermistor 5 adds the value after setting.
Then, if threshold value has been written to threshold value as overtemperature protection temperature threshold and deposits when threshold value confirmation portion 16 confirms normal
Storage portion 9 (step s10 of Fig. 2 a: "Yes"), then keep this state (t5 of Fig. 5 and Fig. 6).
Then, if ig switch 18 is still switched on (step s14 of Fig. 2 a: "No"), carried out by motor control part 6 etc.
Auxiliary control process (step s15).
Specifically, as shown in Figure 3, if to microcomputer 1 input turn to steering moment of torsion and speed (step s31:
"Yes"), then motor control part 6 sets the current instruction value (step s32) of electro-motor 20 based on steering moment of torsion and speed.Connect
, the overtemperature protection temperature that export-restriction portion 7 is stored to the estimation temperature estimated by temperature estimation section 8 and threshold value storage part 9
Threshold value when normal (now for threshold value) is compared (step s33), based on the current-order to electro-motor 20 for this comparative result
Value is limited (step s34).Here, for example, based on the difference estimating temperature and overtemperature protection temperature threshold, reduce electro-motor
20 current instruction value.
Then, motor driving part 3 drives electro-motor 20 (step s35) based on the current instruction value being limited.Thus,
Give steering auxiliary force to the steering control system of automobile, becoming driver can be operated to steering with less power.Additionally, it is electric
The measured value of the temperature of reality of dynamic motor 20 and estimation temperature and thermistor 5 rises.
When not to microcomputer 1 input steering moment of torsion (step s31: "No"), not execution step s32～s35
Process, and terminate to assist control process.
If auxiliary control process terminate, the later process of step s9 of execution Fig. 2 a again.
Thereafter, if ig switch 18 is disconnected (step s14 of Fig. 2 a: "Yes", the t6 of Fig. 5), time measurement department 17 starts
The measurement (step s16 of Fig. 2 b) of time.
Now, as shown in after the t6 of Fig. 5, become to supply electric power not via ig switch 18 to microcomputer 1, but
It is therefore, to supply battery 30 from power supply self-insurance portion 2 to microcomputer 1 due to by power supply self-insurance portion 2 just in self-insurance power supply
Electric power.Additionally, the driving of electro-motor 20 is stopped, the temperature of the reality of electro-motor 20 and estimate temperature and temperature-sensitive
The measured value of resistance 5 reduces.
Then, it is confirmed whether to set the self-insurance by power supply self-insurance portion 2 self-insurance power supply in self-insurance time setting part 10
Time (step s17 of Fig. 2 b).Now, if the self-insurance time is not set (step s17: "No"), self-insurance time setting part 10
The estimation temperature of the measured value based on thermistor 5 and temperature estimation section 8, sets the self-insurance time (step s18).
Specifically, as described in Figure 4, first, temperature estimation section 8 is deducted by the measured value from thermistor 5
Estimate temperature, calculate both poor δ t (step s41).Then, the function f based on this difference δ t and regulation, calculates the self-insurance time
(step s42).
Thereafter, step s19 advancing to Fig. 2 b, condition criterion portion 13 is with reference to self-insurance time setting part 10 and time measurement department
17, judge whether have passed through the self-insurance time in the state of ig switchs 18 disconnections and power supply self-insurance portion 2 self-insurance power supply.Now,
If without self-insurance time (step s19: "No"), the later process of step s9 of execution Fig. 2 a again.
In step s19 of Fig. 2 b, if having passed through the self-insurance time (step s19: "Yes"), the measurement (step of dwell time
Rapid s20), by normal termination write section 12, normal termination mark 11a is rewritten as opening (t7 of step s21, Fig. 5).Then,
Close the self-insurance (t8 of step s22, Fig. 5 of Fig. 2 b) of the power supply that (stopping) power supply self-insurance portion 2 is carried out.
On the other hand, when executing circulation (loop) of step s9～s15 of Fig. 2 a, there occurs that for example battery 30 is split
In the case of unloading or be derived from the exception of the power line broken string of battery 30 etc., electronic-controlled installation 100 shuts down (shut down).
Therefore, as shown in the t10 of Fig. 6, via ig switch 18 power supply be disconnected, the power supply that power supply self-insurance portion 2 is carried out from
Guarantor is also turned off (stopping).Additionally, a series of process of Fig. 2 a and Fig. 2 b is interrupted, the temperature based on thermistor 5 is surveyed
Amount is stopped, and is also stopped based on temperature estimation section 8 Temperature estimate.
Thereafter, if power up and electronic-controlled installation 100 restarts, confirming that ig switch 18 is switched on
After (step s1 of Fig. 2 a), carry out the initial treatment (t11 of step s2, Fig. 6 of Fig. 2 a) of each several part.
If the initial treatment of each several part completes, the self-insurance of power supply is opened (step s3, Fig. 6 of Fig. 2 a by power supply self-insurance portion 2
T12), normal termination confirmation portion 14 confirm normal termination mark 11a state (step s4 of Fig. 2 a).Now, normal termination
Mark 11a remains and becomes the state of closing (step s4: "No") in step s8 before restarting.Therefore, threshold value is write
Enter portion 15 using threshold value during exception as overtemperature protection temperature threshold override threshold value storage part 9 (step s6, Fig. 6 of Fig. 2 a
T13), start the measurement (step s7 of Fig. 2 a) of threshold value recovery time by time measurement department 17.
Then, normal termination mark 11a still is set to close (step s8 of Fig. 2 a) by normal termination write section 12, temperature
Estimator 8 estimates the temperature (t14 of step s9, Fig. 6 of Fig. 2 a) of electro-motor 20.
Hereafter, threshold value confirmation portion 16 confirms that during exception, threshold value is stored in threshold value storage part as overtemperature protection temperature threshold
Situation (step s10 of Fig. 2 a: "No") in 9.Then, if in before threshold value recovery time (step s11: "No"), and
Ig switch 18 is still switched on (step s14: "No"), then carry out assisting control process (step s15).
Now, as described above, carry out each process of Fig. 3, but in step s33, export-restriction portion 7 is to based on temperature
The estimation temperature of estimator 8 and the overtemperature protection temperature threshold (now for threshold value during exception) storing in threshold value storage part 9
It is compared.Then, the current instruction value (step s34) of electro-motor 20 is limited based on this comparative result.Thus, compare and relatively go up
State normal when, carry out limiting the current instruction value of electro-motor 20 reduced, the temperature of suppression electro-motor 20 rises.
Thereafter, if through threshold value recovery time (step s11 of Fig. 2 a: "Yes", Fig. 6 t15), time measurement department 17 is stopped
The only measurement (step s12 of Fig. 2 a) of threshold value recovery time, when threshold value write section will be normal, threshold value is as overtemperature protection temperature threshold
Threshold value storage part 9 (step s13) is arrived in value overriding.
Then, if ig switch 18 is disconnected (step s14: "Yes"), as described above, step s16 of execution Fig. 2 b with
Process afterwards.
In the above-described embodiment, in the case of there occurs exception, the Electronic Control dress of electric motor driven power steering system 200
Put 100 shutdown, become to carry out the self-insurance of power supply by power supply self-insurance portion 2, the Temperature estimate based on temperature estimation section 8 is processed
It is interrupted.However, when ig switch 18 behind is connected, normal termination storage part 11 does not store the order of normal termination
(normal termination mark 11a is closed mode), therefore, threshold value write section 15 is using threshold value during exception as overtemperature protection temperature threshold
It is written to threshold value storage part 9.Therefore, based on to the estimation temperature of temperature estimation section 8 and abnormal when the knot that compares of threshold value
Really, the control output of the electro-motor 20 for controlling steering auxiliary is strictly limited by export-restriction portion 7, accordingly, it is capable to
Enough prevent electro-motor 20 from breaking down due to overheated.
Additionally, in the above-described embodiment, if through the threshold of regulation when by exception, threshold value is written to threshold value storage part 9
Value recovery time, then when threshold value write section 15 will be normal, threshold value overrides threshold value storage part 9.Therefore, the reality of electro-motor 20
Temperature after Temperature estimate value, threshold value as overtemperature protection temperature threshold, threshold value storage part 9 can be carried out when will be normal
Reset.Then, based on to the estimation temperature of temperature estimation section 8 and normal when the result that compares of threshold value, control electricity
Dynamic motor 20, such that it is able to not lose the performance of electro-motor 20, fully plays performance.
And then, in the above-described embodiment, the measured value based on thermistor 5 for the self-insurance time setting part 10 and Temperature estimate
The estimation temperature difference in portion 8, sets the self-insurance time by power supply self-insurance portion 2 self-insurance power supply.Then, if condition criterion portion 13
It is judged to, in the state of ig switchs 18 disconnections and power supply self-insurance portion 2 self-insurance power supply, have passed through the self-insurance time, then normal termination
Normal termination mark 11a is opened (state being written with the order of normal termination) by write section 12, and power supply self-insurance portion 2 stopped
The self-insurance of power supply.
Thus, through the self-insurance time, the temperature of the reality of electro-motor 20 reduces, and this temperature is close to temperature estimation section 8
After estimating temperature, stop self-insurance and the Temperature estimate of power supply, the order of normal termination can be recorded normal termination storage
Portion 11.Additionally, before the self-insurance time, due to abnormal generation, having interrupted the self-insurance of power supply and the situation of Temperature estimate
Under, can be set to the order of normal termination not recorded normal termination storage part 11 (the closing shape of normal termination mark 11a
State).Then, when next ig switch 18 is connected, can when will be normal threshold value or abnormal when threshold value as overtemperature protection temperature
Degree threshold value suitably sets to threshold value storage part 9.
The present invention also can adopt various embodiment other than the above.For example, in the above embodiment, illustrate
If ig switch 18 disconnect and power supply self-insurance portion 2 self-insurance power supply in the state of through the self-insurance time, by normal termination mark
The example that will 11a is opened, but the present invention is not limited to this.In addition it is also possible to be set to for example below like that.In ig
After switch 18 disconnection (step s14 of Fig. 2 a: "Yes"), condition criterion portion 13 as shown in Figure 7, calculates the survey of thermistor 5
Estimation temperature difference (temperature difference) the δ t (step s23) of value and temperature estimation section 8.Then, if this difference δ t is less than setting
(step s24: "Yes"), then open normal termination mark 11a (step s21), stop power supply based on power supply self-insurance portion 2 from
Protect (step s22).If difference δ t is more than setting (step s24: "No"), it is back to step s9.
Thus, the temperature of the reality of electro-motor 20 reduces, and this temperature, after the estimation temperature of temperature estimation section 8, is stopped
Only the order of normal termination can be recorded normal termination storage part 11 by the self-insurance of power supply and Temperature estimate.Additionally, in heat
The estimation temperature difference δ t of the measured value of quick resistance 5 and temperature estimation section 8 is located at the period of more than setting, due to abnormal
Occur, in the case of having interrupted self-insurance and the Temperature estimate of power supply, can be set to just not recorded the order of normal termination
Often terminate storage part 11 (closed mode of normal termination mark 11a).Then, when next ig switch 18 is connected, can be by
When normal threshold value or abnormal when threshold value as overtemperature protection temperature threshold, threshold value storage part 9 is suitably set.
Additionally, in the above embodiment, if showing, when threshold value write section 15 is by exception, threshold value is written to threshold value
After storage part 9, through threshold value recovery time, then when will be normal, threshold value overrides threshold value storage part 9, changes overtemperature protection temperature
The example of threshold value, but the present invention is not limited to this.In addition or for example, when by exception, threshold value is written to threshold
After value storage part 9, be decreased to less than at a temperature of the estimation of temperature estimation section 8 setting or temperature estimation section 8 estimation temperature and
When the difference of the measured value of thermistor 5 becomes less than setting, when will be normal, threshold value overrides threshold value storage part 9, and change is overheated
Protection temperature threshold.
Additionally, in the above embodiment, show example thermistor 5 being used as Temperature measuring section, but this
Invention is not limited to this.In addition or for example use the measurement of the current value measurement temperature based on electro-motor 20
Detector unit beyond part or thermistor 5 etc. is as Temperature measuring section.
Additionally, in the above embodiment, control object, Temperature estimate object and overtemperature protection object are shown
It is the example of electro-motor 20, but the present invention is not limited to beyond this or electro-motor 20.Additionally, control object,
Temperature estimate object and overtemperature protection object can also each different it is also possible to any 2 identical.For example, Temperature estimate pair
As being the heating of the relay (relay), the electrolytic capacitor that comprise in motor driving part 3 etc. with overtemperature protection object
Body or the motor separating with electronic-controlled installation, electric actuator etc..Additionally, control object can also be and electricity
The separate motor of sub- control device, electric actuator etc..
And then, in the above embodiment, enumerate the Electronic Control system of the electric motor driven power steering system 200 to automobile
The example that system 100 applies the present invention, but be not limited to this, in addition, vehicle is used, household electrical appliances with or oa (do
Public automation) with etc. electronic-controlled installation it is also possible to the application present invention.
Claims (5)
1. a kind of electronic-controlled installation it is characterised in that
Described electronic-controlled installation possesses:
Control unit, based on the input information of regulation, is controlled to control object；
Temperature measuring section, is arranged on the vicinity of Temperature estimate object；
Temperature estimation section, based on the measured value of described Temperature measuring section, estimates the temperature of Temperature estimate object；
Threshold value storage part, stores overtemperature protection temperature threshold；
Export-restriction portion, the described mistake storing based on the estimation temperature to described temperature estimation section and in described threshold value storage part
The result that Thermal protection temperature threshold compares, limits the control described control object being controlled for described control unit
Output；
Power supply self-insurance portion, self-insurance power supply after power switch disconnects；
Normal termination storage part, the order of storage normal termination；
Normal termination write section, the order of normal termination is written to described normal termination storage part；
Condition criterion portion, determines whether to meet the estimation of measured value based on described Temperature measuring section and described temperature estimation section
Temperature and the condition of regulation that sets；
Normal termination confirmation portion, confirms the order of normal termination that whether is stored with described normal termination storage part；And
Threshold value write section, when will be normal threshold value or abnormal when threshold value be written to described threshold as described overtemperature protection temperature threshold
Value storage part, when described abnormal threshold value be than this when normal threshold value tighter detect the threshold value of superheat state,
After described power switch disconnects, be judged to meet the condition of described regulation in described condition criterion portion in the case of,
The order of normal termination is written to described normal termination storage part by described normal termination write section, and described power supply self-insurance portion stops
The only self-insurance of described power supply,
When described power switch is connected, confirm to be stored with described normal termination storage part in described normal termination confirmation portion
In the case of the order of normal termination, when described threshold value write section will be described normal, threshold value overrides described threshold value storage part,
Confirm not store the order of normal termination in described normal termination storage part in described normal termination confirmation portion in the case of,
When described threshold value write section will be described abnormal, threshold value overrides described threshold value storage part.
2. electronic-controlled installation as claimed in claim 1 it is characterised in that
If through the stipulated time threshold value overrides described threshold value storage part from will be described abnormal when, described threshold value write section will
When described normal, threshold value overrides described threshold value storage part.
3. electronic-controlled installation as claimed in claim 1 or 2 it is characterised in that
Described electronic-controlled installation is also equipped with: self-insurance time setting part, the measured value based on described Temperature measuring section and described temperature
The estimation temperature difference of degree estimator, set to the self-insurance time of described power supply self-insurance portion's self-insurance power supply,
Described condition criterion portion judge described power switch disconnect and described power supply self-insurance portion's self-insurance power supply in the state of be
No have passed through the described self-insurance time, as the condition of described regulation.
4. electronic-controlled installation as claimed in claim 1 or 2 it is characterised in that
Described condition criterion portion judges that the measured value of described Temperature measuring section and the estimation temperature difference of described temperature estimation section are
No become less than setting, as the condition of described regulation.
5. electronic-controlled installation as claimed in claim 1 or 2 it is characterised in that
Described electronic-controlled installation is made up of the electric power-steering controller carrying on vehicle,
Described control object and described Temperature estimate object are made up of electro-motor, and described electro-motor is by described electric-powered turn
Control its driving to control device, to produce steering auxiliary force,
Described power switch is made up of the ignition switch of vehicle.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2013-155893 | 2013-07-26 | ||
| JP2013155893A JP6066201B2 (en) | 2013-07-26 | 2013-07-26 | Electronic control unit |
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| CN104340265B true CN104340265B (en) | 2017-01-18 |
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| CN109863684B (en) | 2016-09-02 | 2023-06-06 | 康斯博格股份有限公司 | Technique for limiting current supplied to motor in electric power steering system |
| JP6683116B2 (en) * | 2016-12-12 | 2020-04-15 | 株式会社デンソー | Motor control device |
| JP7023387B2 (en) * | 2019-01-16 | 2022-02-21 | 三菱電機株式会社 | Motor control device and air conditioner |
| JP2023060590A (en) * | 2021-10-18 | 2023-04-28 | 株式会社デンソー | Driving member controller |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101663193A (en) * | 2007-06-13 | 2010-03-03 | 日本精工株式会社 | Electric power steering apparatus |
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| JP2892899B2 (en) * | 1993-02-26 | 1999-05-17 | 三菱電機株式会社 | Motor control device |
| JP4474662B2 (en) * | 2001-06-06 | 2010-06-09 | 日本精工株式会社 | Control device for electric power steering device |
| JP4513367B2 (en) * | 2004-03-18 | 2010-07-28 | 日本精工株式会社 | Electric power steering device |
| JP2009107407A (en) * | 2007-10-26 | 2009-05-21 | Jtekt Corp | Electric power steering device |
| JP5332689B2 (en) * | 2009-02-13 | 2013-11-06 | 日本精工株式会社 | Motor control device |
| KR101286823B1 (en) * | 2009-12-31 | 2013-07-17 | 현대모비스 주식회사 | Protecting method of motor driven steering system from overheat |
| JP5134042B2 (en) * | 2010-05-28 | 2013-01-30 | 三菱電機株式会社 | Electric power steering device |
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| CN101663193A (en) * | 2007-06-13 | 2010-03-03 | 日本精工株式会社 | Electric power steering apparatus |
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| JP6066201B2 (en) | 2017-01-25 |
| CN104340265A (en) | 2015-02-11 |
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