CN103670765A - Diesel engine speed regulating device controlled through switching value and method - Google Patents
Diesel engine speed regulating device controlled through switching value and method Download PDFInfo
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- CN103670765A CN103670765A CN201310657416.6A CN201310657416A CN103670765A CN 103670765 A CN103670765 A CN 103670765A CN 201310657416 A CN201310657416 A CN 201310657416A CN 103670765 A CN103670765 A CN 103670765A
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Abstract
The invention provides a diesel engine speed regulating device controlled through a switching value. An accelerating relay and a decelerating relay are arranged, coils of the relays are connected with a digital output (DO) channel of a micro controller, and contacts of the relays are connected with an accelerating control circuit and a decelerating control circuit of an electronic speed regulator. Actual rotation speed (RPM_ENG) generated when a diesel engine is used replaces a set target rotation speed (RPM_REF), the set target rotation speed (RPM_REF) is estimated through a logical algorithm of the micro controller, due to the fact that the difference between the actual rotation speed (RPM_ENG) and a required target rotation speed (RPM_REQ) is obtained, the digital output (DO) channel controls the external relays, and accordingly an accelerating switch and a decelerating switch are controlled and automatic rotation speed setting is achieved. Automatic diesel engine speed regulation and automatic rotation speed and power control are achieved, the function of automatic test procedure control is achieved, test efficiency is improved, and labor intensity of test personnel is reduced.
Description
Technical field
The present invention relates to a kind of diesel engine speed regulation device and method that utilizes switching value to control, belong to Diesel Engine Control technical field.
Background technique
The rotational speed regulation of high-power diesel engine is normally realized by the speed regulator of diesel engine.Conventional speed regulator type has mechanical speed governor, combined regulator, electronic speed regulator and electric spray control system speed governing at present.Wherein electronic speed regulator generally only provides ascending, descending rotating speed button mode of speed regulation, and do not provide, analog amount is set, the mode of communication setting.The system of ascending, descending speed button speed governing is simple, relatively be convenient to manual manipulation, but adopt the diesel engine of this type of mode of speed regulation in process of the test, must observe diesel engine speed by tester changes, manual governing, loading, this has strengthened the labor intensity of tester, and cannot realize quick speed setting, cannot coordinate automatic power control system to realize experiment process and automatically control, reduce test efficiency and precision.As made Control System of Microcomputer pass through communication mode, directly set diesel engine rotating speed of target, or the feedback signal of rotating speed of target is provided by supplier, this needs electronic speed regulator supplier to revise hardware, software, open communication protocol.And require supplier, for single project provides software modification and agreement openly to serve this, be almost impossible thing.
Summary of the invention
The object of this reality invention overcomes the deficiency of above-mentioned prior art exactly, a kind of diesel engine speed regulation device and method that utilizes switching value to control is provided, in the precision target speed feedback situations such as not communication, analog amount feedback, realize rotating speed of target fast, accurately and set.
The object of the present invention is achieved like this: a kind of diesel engine speed regulation device that utilizes switching value to control, comprise electronic speed regulator, it is characterized in that arranging raising speed, two relays of reduction of speed, the digital output passage (DO) of the coil access microcontroller of relay, raising speed, the reduction of speed control circuit of the contact access electronic speed regulator of relay.
A diesel engine speed regulation method of utilizing switching value to control, is characterized in that taking the following step:
H. receive request target rotating speed (RPM_REQ);
I. detect diesel engine actual speed (RPM_ENG);
J. the absolute difference Δ V=|RPM_REQ-RPM_ENG| of computation requests rotating speed of target and actual speed;
K. by Δ V and setting value comparison, according to comparative result, determine output time T_DO and the output time interval T _ ALT of the digital output passage DO of microcontroller;
L. microcontroller is controlled the output of the digital output passage DO that is connected to relay coil according to output time T_DO and output time interval T _ ALT;
M. access the contact of electronic speed regulator raising speed, reduction of speed control circuit with the output of controlling microcontroller digital output passage DO, to electronic speed regulator, send ascending, descending speed signal;
N. electronic speed regulator, according to the lifting speed signal of receiving, regulates rotating speed of target (RPM_REF), and regulates diesel engine speed according to RPM_REF.
The solution of the present invention, utilized the feature that Control System of Microcomputer can flexible programming, actual conditions in conjunction with Diesel Engine Digital Electronic Speed System, diesel engine rotating speed of target value of feedback can not had, cannot be by communication, analog amount, the means such as switching value are directly set in diesel engine rotating speed of target situation, by Control System of Microcomputer, control and rise, reduction of speed switch, automatically controlling diesel engine rotating speed of target sets, realized automatic control diesel engine speed regulation and then realized automatic rotating speed, power is controlled, realize the function that automatic experiment process is controlled, improved test efficiency, reduced the labor intensity of tester.
Accompanying drawing explanation
Fig. 1 is the diesel engine speed regulation device schematic diagram that utilizes switching value to control of the embodiment of the present invention.
Fig. 2 is the diesel engine speed regulation Method And Principle block diagram that utilizes switching value to control of the embodiment of the present invention.
Fig. 3 is the software flow pattern of the diesel engine speed regulation method of utilizing switching value control of the embodiment of the present invention.
Embodiment
Referring to accompanying drawing 1, the diesel engine speed regulation device that utilizes switching value to control of the present embodiment, comprise electronic speed regulator and microcontroller, raising speed, two relays of reduction of speed are set, the digital output passage (DO) of the coil access microcontroller of relay, raising speed, the reduction of speed control circuit of the contact access electronic speed regulator of relay.
Referring to accompanying drawing 2, the diesel engine speed regulation method of utilizing switching value to control of the present embodiment, its system running principle is:
1. first system enters 1.2 reception request target rotating speeds (RPM_REQ) after starting.
2. enter 1.3, detect diesel engine actual speed (RPM_ENG).
3. enter 1.4, calculate rotating speed difference absolute value delta V(request target rotating speed and actual speed difference), Δ V=|RPM_REQ-RPM_ENG|.
4. enter 1.5, according to Δ V, judgement DO output time T_DO and DO output time interval T _ ALT(are as shown in Figure 2).
5. enter 1.6, according to T_DO and T_ALT, control DO output, controlling DO channel levels is specified level.
6. enter 1.7, external relay is subject to the control of DO output, sends ascending, descending speed signal.
7. enter 1.8, the lifting speed signal that electronic speed regulator basis is received, internal regulation rotating speed of target (RPM_REF), and regulate diesel engine speed according to RPM_REF.
Referring to accompanying drawing 3, for realizing above-mentioned control principle, need to Control System of Microcomputer, programme by computer language, its software control flow process is as follows:
1. system starts rear start by set date interrupt service routine, enters frame 4.1.
2. enter frame 4.2, counter T_COUNT=T_COUNT+1, enters next step.
3. enter frame 4.3, receive upper-position unit request target rotating speed RPM_REQ, enter next step.
4. enter frame 4.4, detect diesel engine actual speed RPM_ENG, enter next step.
5. enter frame 4.5, calculate the absolute value delta V=|RPM_REQ-RPM_ENG| of rotating speed difference, enter next step.
6. enter frame 4.6, judge whether Δ V is more than or equal to 40: be to enter frame 4.7; No, enter frame 4.8.
7. enter frame 4.7, DO passage control time T_DO=270ms, DO passage control time interval T _ ALT=450ms.
8. enter frame 4.8, DO passage control time T_DO=150ms, DO passage control time interval T _ ALT=1200ms.
9. enter frame 4.9, judge whether diesel engine actual speed RPM_ENG is less than 370rpm or is greater than 960rpm: be to enter frame 4.10; No, enter frame 4.11.
10. enter frame 4.10, DO passage control time T_DO=150ms, DO passage control time interval T _ ALT=1200ms.
11. enter frame 4.11, and whether judgement request rotating speed RPM_REQ is than the large 3rpm of actual speed RPM_ENG: be to enter frame 4.12; No, enter frame 4.13.
12. enter frame 4.12, and DO passage predefined value DO_T=raising speed, enters frame 4.16.
13. enter frame 4.13, judge that whether actual speed is than asking the large 3rpm of rotating speed: be to enter frame 4.14; No, enter frame 4.15.
14. enter frame 4.14, and DO passage predefined value DO_T=reduction of speed, enters frame 4.16.
15. enter frame 4.15, and DO passage predefined value DO_T=keeps speed, enters frame 4.16.
16. enter frame 4.16, judge whether actual speed is greater than 1050, diesel engine hypervelocity: be to enter frame 4.17; No, enter frame 4.18.
17. enter frame 4.17, and DO output=reduction of speed enters frame 4.23.
18. enter frame 4.18, judge whether counter T_COUNT is less than DO passage control time T_DO: be to enter frame 4.19; No, enter frame 4.20;
19. enter frame 4.19, and DO output=DO passage predefined value DO_T, enters frame 4.23.
20. enter frame 4.20, judge whether counter T_COUNT is less than DO passage control time interval T _ ALT: be to enter frame 4.21; No, enter frame 4.22;
21. enter frame 4.21, and export=maintenance of DO speed, enters frame 4.23.
22. enter frame 4.22, export=maintenance of DO speed, and counter T_COUNT=0, enters frame 4.23.
23. enter frame 4.23, complete interrupt service routine, return to main program, wait for next Interruption.Choosing of each limits value
1. choosing of the absolute value delta V of rotating speed difference: calculating Δ V, is in order to select different speed governing frequencies according to different Δ V, to reduce speed governing frequency when actual speed approaches request rotating speed, prevents the fluctuation of speed.The actual value that the Δ V of specific embodiment adopts while being 8RK270 diesel engine test, can carry out, after actual test, debugging, according to circumstances choosing according to different diesel engines.
2.DO passage control time T_DO chooses: T_DO is used for controlling DO passage and is output as the effective time, controls effect and is equal to the time that ascending, descending speed button is pressed, and different rotating speeds is poor, T_DO is different in actual speed situation.The actual value that the T_DO of specific embodiment adopts while being 8RK270 diesel engine test.Can carry out, after actual test, debugging, according to circumstances choosing according to different diesel engines.
3.DO passage control time interval T _ ALT chooses: T_ALT is used for controlling DO passage and is output as effective frequency, effect be equal to press ascending, descending speed button by frequency, different rotating speeds is poor, T_ALT is different in actual speed situation.The actual value that the T_ALT of specific embodiment adopts while being 8RK270 diesel engine test.Can carry out, after actual test, debugging, according to circumstances choosing according to different diesel engines.
4. approach choosing of limit speed value 370rpm and 960rpm: when being used for controlling actual speed and approaching idling (330rpm) or rated speed (1000rpm), automatically reduce speed governing frequency and speed governing step-length, to prevent the fluctuation of speed.The employing of specific embodiment be 8RK270 diesel engine test time actual value.Can carry out, after actual test, debugging, according to circumstances choosing according to different diesel engines.
5. hypervelocity the choosing of limit value 1050rpm: be used for preventing diesel engine hypervelocity, driving.Consistent with the actual hypervelocity speed setting of diesel engine.
6. control choosing of static difference 3rpm: for controlling rotating speed static error, this value choose the specific requirement of answering reference test outline.
Claims (2)
1. a diesel engine speed regulation device that utilizes switching value to control, comprise electronic speed regulator, it is characterized in that arranging raising speed, two relays of reduction of speed, the digital output passage (DO) of the coil access microcontroller of relay, raising speed, the reduction of speed control circuit of the contact access electronic speed regulator of relay.
2. a speed regulating method that utilizes the diesel engine speed regulation device of switching value control described in claim 1, is characterized in that taking the following step:
A. receive request target rotating speed (RPM_REQ);
B. detect diesel engine actual speed (RPM_ENG);
C. the absolute difference Δ V=|RPM_REQ-RPM_ENG| of computation requests rotating speed of target and actual speed;
D. by Δ V and setting value comparison, according to comparative result, determine output time T_DO and the output time interval T _ ALT of the digital output passage DO of microcontroller;
E. microcontroller is controlled the output of the digital output passage DO that is connected to relay coil according to output time T_DO and output time interval T _ ALT;
F. access the contact of electronic speed regulator raising speed, reduction of speed control circuit with the output of controlling microcontroller digital output passage DO, to electronic speed regulator, send ascending, descending speed signal;
G. electronic speed regulator, according to the lifting speed signal of receiving, regulates rotating speed of target (RPM_REF), and regulates diesel engine speed according to RPM_REF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310657416.6A CN103670765B (en) | 2013-12-05 | 2013-12-05 | Utilize the diesel engine speed regulation device and method of digital output modul |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310657416.6A CN103670765B (en) | 2013-12-05 | 2013-12-05 | Utilize the diesel engine speed regulation device and method of digital output modul |
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| Publication Number | Publication Date |
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| CN103670765A true CN103670765A (en) | 2014-03-26 |
| CN103670765B CN103670765B (en) | 2016-02-24 |
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| CN201310657416.6A Expired - Fee Related CN103670765B (en) | 2013-12-05 | 2013-12-05 | Utilize the diesel engine speed regulation device and method of digital output modul |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03266730A (en) * | 1990-03-16 | 1991-11-27 | Toyota Motor Corp | Running control device |
| CN2353900Y (en) * | 1998-12-16 | 1999-12-15 | 王维东 | Electronic speed-regulator for diesel engine |
| CN201129215Y (en) * | 2007-12-25 | 2008-10-08 | 中国北车集团大连机车车辆有限公司 | Converting device for electronic speed-regulator for diesel engine to replace mechanical speed regulating device interface |
| CN201750398U (en) * | 2010-08-03 | 2011-02-16 | 天水星火机床有限责任公司 | Frequency conversion speed regulation device of machine transmission system |
| CN102211648A (en) * | 2010-04-06 | 2011-10-12 | 无锡晶磊电子有限公司 | Electronic speed regulator for yacht |
-
2013
- 2013-12-05 CN CN201310657416.6A patent/CN103670765B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03266730A (en) * | 1990-03-16 | 1991-11-27 | Toyota Motor Corp | Running control device |
| CN2353900Y (en) * | 1998-12-16 | 1999-12-15 | 王维东 | Electronic speed-regulator for diesel engine |
| CN201129215Y (en) * | 2007-12-25 | 2008-10-08 | 中国北车集团大连机车车辆有限公司 | Converting device for electronic speed-regulator for diesel engine to replace mechanical speed regulating device interface |
| CN102211648A (en) * | 2010-04-06 | 2011-10-12 | 无锡晶磊电子有限公司 | Electronic speed regulator for yacht |
| CN201750398U (en) * | 2010-08-03 | 2011-02-16 | 天水星火机床有限责任公司 | Frequency conversion speed regulation device of machine transmission system |
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| CN103670765B (en) | 2016-02-24 |
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