CN203614235U - Digital electronic governor - Google Patents
Digital electronic governor Download PDFInfo
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- CN203614235U CN203614235U CN201320634613.1U CN201320634613U CN203614235U CN 203614235 U CN203614235 U CN 203614235U CN 201320634613 U CN201320634613 U CN 201320634613U CN 203614235 U CN203614235 U CN 203614235U
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- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The utility model provides a digital electronic governor, which comprises a speed controller, an actuator and a speed sensor. The speed controller comprises a speed setting potentiometer, an F/V (frequency/voltage) converter, a comparator, a speed deviator and a PID (proportion integration differentiation) adjuster, wherein the speed setting potentiometer is used for setting desired speed; the F/V converter is used for converting an analog signal of an actual speed sensor into a digital signal to be transmitted to the speed controller; the comparator is used for comparing the desired speed and actual speed; the speed deviator is used for computing the speed deviation value of the desired speed and the actual speed; the PID adjuster is used for converting the speed deviation value into a PWM (pulse-width modulation) signal to control the actuator; an internal spring is compressed by the actuator under the action of drive current to change to do linear motion for output; a pull rod of the actuator acts on a governor handle of an engine to control the engine to stably run at a set speed. The digital electronic governor provided by the utility model is safer in operation, better in discreteness and higher in stability.
Description
Technical field
The present invention relates to a kind of digitalized electron speed regulator.
Background technique
The need of work of diesel engine is stablized by a speed regulator, be called speed regulator, the diesel engine generally using at present, its fuel feed amount is by the determining positions of injection pump plunger, the position of injection pump plunger is regulated by the plunger position control tooth bar in Injection Pump, associated by between rotating speed device and plunger position control tooth bar of speed regulator, stablize the rotating speed of diesel engine and prevent driving by the pattern of " reverse feedback ", the principle of mechanical governor Ji Xietiaoxie is that centrifugal force and the spring equilibrium of forces by flying to produce when piece rotates carrys out adjusting rotary speed; When spring force one timing, the centrifugal force that rotating speed height produces while rotation is very fast large, promotes plunger position control tooth bar fuel delivery is reduced, thereby reduce the rotating speed of motor; The centrifugal force that rotating speed is low to be produced while flying piece rotation is little, promotes plunger position control tooth bar fuel delivery is increased, thereby improve the rotating speed of motor, reaches dynamic stable; Strengthening or reduce throttle, is exactly in fact to change spring force by the size of change camber of spring, thereby makes diesel engine be issued to the rotating speed of new balance change motor at new rotating speed.But mechanical governor Ji Xietiaoxie still has shortcoming, be that speed governing is one-time-reach-place and has inertia, and the speed-regulating mode of this machinery need to and fly block system and adjusts accurately and coordinate with Injection Pump spring, as coordinated speed governing sensitivity decline when not good, inertia increases, although it is very fast to occur adding, increase while subtracting throttle, slow down, but oil inflame is incomplete, cause that oil consumption is higher, black smoke, toxic emission be serious; Simultaneously, under the working condition of diesel generator, spring force can not be changed after once setting, and load needs fuel delivery to increase while increasing, and only having speedup to reduce fuel delivery could increase.
Engine governor is to be controlled at by stable motor the control gear moving under the working speed of setting, has on the market: mechanical governor Ji Xietiaoxie, hydrodynamic governor, electrohydraulic governor, electronic speed regulator, centrifugal and vacuum governor according to the difference of its implementation.For a long time, diesel engine mainly adopts mechanical type and mechanical hydraulic-pressure type and analog electronic speed regulator.But these two kinds there is fatal unstability and discrete lines, can not meet the demands far away in many occasions.Simulation electronic speed regulator is arithmetic circuit, servo circuit, feeder loop composition, in calculating process, there is floating of discreteness and stability, the circuit that many discrete devices form like this, as long as a device occurs that parameter variation just can affect whole circuitry, if multiple element occurs that parameter variation issue is more serious.
The problems referred to above are the problems that should pay attention to and solve in the design and production process of speed regulator.
Summary of the invention
The object of this invention is to provide the unstability and the discrete lines that in a kind of digitalized electron speed regulator solution prior art, exist can not meet the demands far away in many occasions, and there is floating of discreteness and stability in simulation electronic speed regulator in calculating process, the circuit that many discrete devices form like this, as long as a device occurs that parameter variation just can affect whole circuitry, if the problem that parameter variation issue is more serious appears in multiple element.
Technical solution of the present invention is:
A kind of digitalized electron speed regulator, comprise the rotational speed governor for setting desired speed, for gathering the speed probe of actual speed, for adjusting the final controlling element of actual speed, described rotational speed governor comprises the speed setting potentiometer for setting desired speed, for the analogue signal of actual speed sensor is converted to the F/V transducer of digital signal to rotational speed governor, for the comparator of more satisfactory rotating speed and actual speed, be used for the rotating speed deviator of the rotating speed departure of calculating desired speed and actual speed, control the PID regulator of final controlling element into pwm signal for changing rotating speed departure, described final controlling element changes and does straight line motion output at the effect lower compression contained spring of driving current, the speed-regulating handle of the pull bar effect motor of described final controlling element, carry out control engine stable operation under the rotating speed setting.
Preferably, the actual speed of described motor is gathered by the speed probe that is installed on flywheel ring gear position.
Preferably, described speed probe adopts magnetoelectric tachometric transducer, and described speed probe comprises magnetic conduction probe, coil, magnet steel, and the magnetic force that described magnet steel produces is popped one's head in and formed the closed magnetic line of force by magnetic conduction, and described coil winding is on magnetic conduction probe.
Preferably, described final controlling element adopts electromagnetic actuator, described final controlling element comprises armored direct current proportion electro-magnet, controls electric current proportional in the oiling direction driving force of described final controlling element and coil winding, and the oily direction reposition force that subtracts of described final controlling element is produced by Returnning spring.
An engine governed speed method for digitalized electron speed regulator, comprises the following steps:
The desired speed of motor is set by the speed setting potentiometer of rotational speed governor, the actual speed of motor is gathered by the speed probe that is installed on flywheel ring gear position, the output signal of described speed probe is frequency sine wave signal proportional to engine speed, this signal imitation sine wave signal is converted to digital square-wave by F/V transducer, with speed setting value through comparator relatively after, obtain rotating speed departure by rotating speed deviator, this rotating speed departure changes into PWM current control mode after PID regulator operation amplifier, to final controlling element output driving current, final controlling element changes and does straight line motion output at the effect lower compression contained spring of driving current, the speed-regulating handle of final controlling element pull bar effect motor, carry out control engine stable operation under the rotating speed setting.
Preferably, the stable operation under the rotating speed setting of described motor, makes generator set export constant 380V alternating voltage.
The invention has the beneficial effects as follows: a kind of digitalized electron speed regulator of the present invention, can be by engine control stable operation and can overcome discreteness improving stability under permanent rotating speed.This kind of digitalized electron speed regulator comprises rotational speed governor, final controlling element, speed probe, rotational speed governor comprises the speed setting potentiometer for setting desired speed, for the analogue signal of actual speed sensor is converted to the F/V transducer of digital signal to rotational speed governor, for the comparator of more satisfactory rotating speed and actual speed, be used for the rotating speed deviator of the rotating speed departure of calculating desired speed and actual speed, control the PID regulator of final controlling element into pwm signal for changing rotating speed departure, described final controlling element changes and does straight line motion output at the effect lower compression contained spring of driving current, the speed-regulating handle of the pull bar effect motor of described final controlling element, carry out control engine stable operation under the rotating speed setting.Compared with prior art, a kind of digitalized electron speed regulator of the present invention, makes that power system operation operation is safer, discreteness is better, stability is better.
Accompanying drawing explanation
Fig. 1 is the explanation block diagram of the embodiment of the present invention;
Wherein: 11-rotational speed governor, 12-speed probe, 13-electromagnetic actuator, 20-motor, 30-power supply, 111-speed setting potentiometer, 112-comparator, 113-rotating speed deviator, 114-F/V transducer, 115-PID regulator.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 1, the present embodiment provides a kind of digitalized electron speed regulator, comprise the rotational speed governor 11 for setting desired speed, for gathering the speed probe 12 of actual speed, for adjusting the final controlling element of actual speed, described rotational speed governor 11 comprises the speed setting potentiometer 111 for setting desired speed, for the analogue signal of actual speed sensor 12 is converted to the F/V transducer 114 of digital signal to rotational speed governor 11, for the comparator 112 of more satisfactory rotating speed and actual speed, be used for the rotating speed deviator 113 of the rotating speed departure of calculating desired speed and actual speed, control the PID regulator 115 of final controlling element into pwm signal for changing rotating speed departure, described final controlling element changes and does straight line motion output at the effect lower compression contained spring of driving current, the speed-regulating handle of the pull bar effect motor 20 of described final controlling element, carry out control engine 20 stable operation under the rotating speed setting.
Described speed probe 12 adopts magnetoelectric tachometric transducer 12, and described speed probe 12 comprises magnetic conduction probe, coil, magnet steel, and the magnetic force that described magnet steel produces is popped one's head in and formed the closed magnetic line of force by magnetic conduction, and described coil winding is on magnetic conduction probe.Described final controlling element adopts electromagnetic actuator 13, and described final controlling element comprises armored direct current proportion electro-magnet, controls electric current proportional in the oiling direction driving force of described final controlling element and coil winding, and the oily direction reposition force that subtracts of described final controlling element is produced by Returnning spring.
A kind of digitalized electron speed regulator of the present embodiment, is powered and for regulating the rotating speed of motor 20 by power supply 30.This kind of digitalized electron speed regulator, comprise rotational speed governor 11, final controlling element, speed probe 12 and the cable that is connected above-mentioned parts, the desired speed of motor 20 is set by the speed setting potentiometer 111 on rotational speed governor 11, the actual speed of motor 20 is gathered by the magnetoelectric tachometric transducer 12 that is installed on flywheel ring gear position, and the output signal of speed probe 12 is frequency and the proportional AC sine wave signal of motor 20 rotating speed, this signal is through modulus signal transducer, and F/V transducer 114, is converted to digital square-wave, and after speed setting value, obtains rotating speed departure, this rotating speed departure is through PID regulator 115, it is proportional-integral derivative controller, after operation amplifier, change into PWM, it is pulse width modulation electrical current control mode, to final controlling element output driving current, final controlling element changes and does straight line motion output at the effect lower compression contained spring of driving current, final controlling element is armored direct current proportion electro-magnet, in the oiling direction driving force of final controlling element and coil winding, control electric current proportional, subtracting oily direction reposition force is produced by Returnning spring, final controlling element pull bar effect diesel engine 20 speed-regulating handles, thereby control engine 20 stable operation under the rotating speed setting.
The working principle of this kind of digitalized electron speed regulator is: by comparing setting motor 20 actual speed that working speed and detecting element record, result relatively, be deviation, comprise two-part information: deviation " positive and negative " information and deviation amplitude information.
The effect of deviation " positive and negative " information is: if motor 20 actual speed are greater than the working speed of setting, deviation is " bearing ", and speed regulator will be exported " negative sense " and control, and reduce fuel quantity by executive component, and motor 20 rotating speeds decrease; If motor 20 actual speed are less than the working speed of setting, deviation is " just ", and speed regulator will be exported " forward " and control, and increase fuel quantity by executive component, and motor 20 rotating speeds increase.
The effect of deviation amplitude information is: deviation amplitude is through MCU, it is the processing of microprocessor or microcontroller, determine the size of output controlled quentity controlled variable, increase or reduce fuel quantity number, in the situation that deviation amplitude is certain, the size of output controlled quentity controlled variable must be suitable, excessive or too smallly all can cause motor 20 rotary speed unstabilizations or not reach adjusting speed accuracy requirement.
The desired speed of motor 20 is set by the speed setting potentiometer 111 of rotational speed governor 11, the actual speed of motor 20 is gathered by the speed probe 12 that is installed on flywheel ring gear position, the output signal of described speed probe 12 is frequency and the proportional sine wave signal of motor 20 rotating speed, this signal imitation sine wave signal is converted to digital square-wave by F/V transducer 114, with speed setting value through comparator 112 relatively after, obtain rotating speed departure by rotating speed deviator 113, this rotating speed departure changes into PWM current control mode after PID regulator 115 operation amplifiers, to final controlling element output driving current, final controlling element changes and does straight line motion output at the effect lower compression contained spring of driving current, the speed-regulating handle of final controlling element pull bar effect motor 20, carry out control engine 20 stable operation under the rotating speed setting.The stable operation under the rotating speed setting of described motor 20, makes generator set export constant V alternating voltage.
The desired speed of motor 20 is set by speed setting potentiometer 111 and external trimmer potentiometer, and wherein, external trimmer potentiometer is selectable unit (SU), can select according to actual needs arrange or do not arrange.The actual speed of motor 20 is experienced by the magnetoelectric tachometric transducer 12 that is installed on flywheel ring gear position, and the output signal of speed probe 12 is frequency and the proportional AC sine wave signal of motor 20 rotating speed, this signal is converted to digital square-wave through analog-digital converter, and after speed setting value, obtains rotating speed departure, this deviation draws motor 20 fuel feed positions after PID regulator 115 operation amplifiers, it is executive component stable state output order position, this location of instruction and the actual outgoing position of current electromagnetic actuator 13 relatively after, obtain positional deviation amount, this deviation is again after PID regulator 115 operation amplifiers, change into PWM current control mode, to electromagnetic actuator 13 output driving currents, to change the outgoing position of electromagnetic actuator 13, drive motor 20 injection pump racks, closure or fuel control valve are to the direction motion that reduces rotating speed deviation, thereby control engine 20 stable operation under the rotating speed setting.
The foregoing is only preferred embodiments of the present invention; protection scope of the present invention is not limited with above-mentioned mode of execution; in every case the equivalence that those of ordinary skills do according to disclosed content is modified or is changed, and all should include in the protection domain of recording in claims.
Claims (4)
1. a digitalized electron speed regulator, it is characterized in that: comprise the rotational speed governor (11) for setting desired speed, for gathering the speed probe (12) of actual speed, for adjusting the final controlling element of actual speed, described rotational speed governor (11) comprises the speed setting potentiometer (111) for setting desired speed, for the analogue signal of actual speed sensor (12) is converted to the F/V transducer (114) of digital signal to rotational speed governor (11), for the comparator (112) of more satisfactory rotating speed and actual speed, be used for the rotating speed deviator (113) of the rotating speed departure of calculating desired speed and actual speed, control the PID regulator (115) of final controlling element into pwm signal for changing rotating speed departure, described final controlling element changes and does straight line motion output at the effect lower compression contained spring of driving current, the speed-regulating handle of the pull bar effect motor (20) of described final controlling element, carry out control engine (20) stable operation under the rotating speed setting.
2. digitalized electron speed regulator as claimed in claim 1, is characterized in that: the actual speed of described motor (20) is gathered by the speed probe (12) that is installed on flywheel ring gear position.
3. digitalized electron speed regulator as claimed in claim 1 or 2, it is characterized in that: described speed probe (12) adopts magnetoelectric tachometric transducer (12), described speed probe (12) comprises magnetic conduction probe, coil, magnet steel, the magnetic force that described magnet steel produces is popped one's head in and is formed the closed magnetic line of force by magnetic conduction, and described coil winding is on magnetic conduction probe.
4. digitalized electron speed regulator as claimed in claim 1 or 2, it is characterized in that: described final controlling element adopts electromagnetic actuator (13), described final controlling element comprises armored direct current proportion electro-magnet, in the oiling direction driving force of described final controlling element and coil winding, control electric current proportional, the oily direction reposition force that subtracts of described final controlling element is produced by Returnning spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634613.1U CN203614235U (en) | 2013-10-15 | 2013-10-15 | Digital electronic governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634613.1U CN203614235U (en) | 2013-10-15 | 2013-10-15 | Digital electronic governor |
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| Publication Number | Publication Date |
|---|---|
| CN203614235U true CN203614235U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320634613.1U Expired - Fee Related CN203614235U (en) | 2013-10-15 | 2013-10-15 | Digital electronic governor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527322A (en) * | 2013-10-15 | 2014-01-22 | 苏州盈高电控科技有限公司 | Digital electric speed regulator and engine speed regulating method |
| CN103985492A (en) * | 2014-06-06 | 2014-08-13 | 常州市武进凯利达电子有限公司 | Potentiometer with motion sensing function |
| CN104100382A (en) * | 2014-06-26 | 2014-10-15 | 临沂大学 | Gasoline engine electronic speed controller |
-
2013
- 2013-10-15 CN CN201320634613.1U patent/CN203614235U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527322A (en) * | 2013-10-15 | 2014-01-22 | 苏州盈高电控科技有限公司 | Digital electric speed regulator and engine speed regulating method |
| CN103985492A (en) * | 2014-06-06 | 2014-08-13 | 常州市武进凯利达电子有限公司 | Potentiometer with motion sensing function |
| CN104100382A (en) * | 2014-06-26 | 2014-10-15 | 临沂大学 | Gasoline engine electronic speed controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20141015 |
|
| EXPY | Termination of patent right or utility model |