CN104229671A - Automatic deviation rectification control method and system for fixed car lifting jack - Google Patents
Automatic deviation rectification control method and system for fixed car lifting jack Download PDFInfo
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- CN104229671A CN104229671A CN201410472128.8A CN201410472128A CN104229671A CN 104229671 A CN104229671 A CN 104229671A CN 201410472128 A CN201410472128 A CN 201410472128A CN 104229671 A CN104229671 A CN 104229671A
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Abstract
The invention relates to the technical field of car lifting jack control, in particular to an automatic deviation rectification control method and an automatic deviation rectification control system for a fixed car lifting jack. The method comprises the following steps of receiving height values of lifting mechanisms from substation PLCs (programmable logic controllers) in real time by using a master station PLC; calculating a maximum value and a minimum value in the real-time height values; when the lifting mechanisms ascend, lowering the working frequency of a frequency converter of the lifting mechanism of which the height value forms a height difference of more than or equal to a first preset difference value with the minimum value; when the lifting mechanisms descend, lowering the working frequency of a frequency converter of the lifting mechanism of which the height value forms a height difference of being greater than or equal to a second preset difference value with the maximum value; when the height difference is reduced to a third preset difference value, recovering the lowered working frequency of the frequency converter of the lifting mechanism. According to the method and the system, the working frequency of the frequency converter of the high-speed lifting mechanism is lowered to automatically regulate the height difference in a running process by the master station PLC, so that the height difference synchronization accuracy of each lifting mechanism is ensured to be within the preset height difference values in ascending or descending processes.
Description
Technical field
The present invention relates to car lifting J-Horner control technology field, particularly relate to a kind of fixing car lifting J-Horner automatic deviation correction control method and system.
Background technology
Car lifting J-Horner as guideway vehicle face repair, a kind of accessory equipment of overhaul, if occur when it uses safety misadventure, particularly guideway vehicle frame, fall the operation of car efficiency time overturning, the damage of guideway vehicle and the injures and deaths of personnel must be caused.Therefore, the design of car lifting J-Horner should meet the lifting requirement of guideway vehicle when keeping in repair, and possesses lifting synchro control again, transfinite the function of safety protection such as auto-stop warning, emergency engine kill.Wherein, realize lifting synchro control to consider as the most important thing.
Current most car lifting J-Horner in synchronization lifting process when diff-H reaches 12mm, system auto-stop.Now operating personal manually need adjust the height of each lifting mechanism according to the height value of operator's station display, raises or reduced by high lifting mechanism by low lifting mechanism.After diff-H adjustment is eliminated, then carry out synchronous lifting operation.
Summary of the invention
The object of the invention is to propose a kind of fixing car lifting J-Horner automatic deviation correction control method and system, do not need to carry out loaded down with trivial details artificial adjustment, in operational process, automatic height adjustment is poor, ensure each lifting mechanism rising or decline process in diff-H synchronization accuracy within setting height difference, not only increase frame, fall car efficiency, the safety and stability that ensure that guideway vehicle frame simultaneously, fall in car motion process.
For reaching this object, the present invention by the following technical solutions:
A kind of fixing car lifting J-Horner automatic deviation correction control method, comprising:
The height value of the lifting mechanism that main website PLC real-time reception substation PLC sends;
Obtain the maxima and minima in real-time height value;
When lifting mechanism does upward movement, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H;
When lifting mechanism does descending motion, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H;
When diff-H is contracted to the 3rd preset difference value, recover by the frequency converter frequency of operation of the lifting mechanism turned down.
Wherein, before the height value of the lifting mechanism that described main website PLC real-time reception substation PLC sends, also comprise:
Substation PLC obtains the elevation information of lifting mechanism by height detecting device;
Substation PLC processes the elevation information obtained, and draws the actual height value of lifting mechanism, and passes to main website PLC by fieldbus.
Wherein, it is described when lifting mechanism does upward movement, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H, be specially: when lifting mechanism does upward movement, the height value of each lifting mechanism is compared with minimum value; If when the diff-H of the height value of lifting mechanism and minimum value is more than or equal to the first preset difference value, main website PLC then turns down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H;
Described when lifting mechanism does descending motion, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H, be specially: when lifting mechanism does descending motion, the height value of each lifting mechanism is compared with maxim; If when the diff-H of the height value of lifting mechanism and maxim is more than or equal to the second preset difference value, main website PLC then turns down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H.
Wherein, described first preset difference value is 4mm, and described second preset difference value is 4mm, and described 3rd preset difference value is 0mm.
Wherein, turning down of described frequency converter frequency of operation is turned down as 45Hz by 50Hz.
A kind of fixing car lifting J-Horner automatic error correction control system comprises: substation PLC, main website PLC and frequency converter;
Described substation PLC, the height value for the lifting mechanism reality by acquisition passes to main website PLC;
Described main website PLC, for the height value of the lifting mechanism that real-time reception substation PLC sends; Obtain the maxima and minima in real-time height value; When lifting mechanism does upward movement, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H; When lifting mechanism does descending motion, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H; When diff-H is contracted to the 3rd preset difference value, recover by the frequency converter frequency of operation of the lifting mechanism turned down.
Wherein, also height detecting device is comprised;
Described height detecting device, for obtaining the elevation information of lifting mechanism to substation PLC; Substation PLC processes the elevation information obtained, and draws the height value of lifting mechanism reality, and passes to main website PLC by fieldbus.
Wherein, described height detecting device adopts incremental encoder, and two-way single counting high speed counting machine of PLC inside, described substation is connected with described incremental encoder, and the impulse singla for gathering incremental encoder realizes displacement counting.
Wherein, described first preset difference value is 4mm, and described second preset difference value is 4mm, and described 3rd preset difference value is 0mm.
Wherein, also comprise the asynchronous dynamo be connected with described frequency converter, by Frequency Converter Control Rotational Speed of Asynchronous Motor to adjust the diff-H of lifting mechanism; Turning down of described frequency converter frequency of operation is turned down as 45Hz by 50Hz.Beneficial effect:
One of the present invention fixes car lifting J-Horner automatic deviation correction control method, comprising: the height value of the lifting mechanism that main website PLC real-time reception substation PLC sends; Obtain the maxima and minima in real-time height value; When lifting mechanism does upward movement, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H; When lifting mechanism does descending motion, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H; When diff-H is contracted to the 3rd preset difference value, recover by the frequency converter frequency of operation of the lifting mechanism turned down.Visible, technical solutions according to the invention turn down the frequency of operation of the frequency converter of fireballing lifting mechanism by main website PLC, the object of adjustment lifting mechanism diff-H is reached by Frequency Converter Control asynchronous dynamo, do not need to carry out loaded down with trivial details artificial adjustment, in operational process, automatic height adjustment is poor, ensure each lifting mechanism rising or decline process in diff-H synchronization accuracy within setting height difference, not only increase frame, fall car efficiency, the safety and stability that ensure that guideway vehicle frame simultaneously, fall in car motion process.
Accompanying drawing explanation
Fig. 1 is the diagram of circuit of a kind of fixing car lifting J-Horner automatic deviation correction control method that the specific embodiment of the invention provides.
Fig. 2 is the structural representation of a kind of fixing car lifting J-Horner automatic error correction control system that the specific embodiment of the invention provides.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
Embodiment 1: Fig. 1 is the diagram of circuit of a kind of fixing car lifting J-Horner automatic deviation correction control method that the specific embodiment of the invention provides.As shown in Figure 1, one of the present invention fixes car lifting J-Horner automatic deviation correction control method, comprising:
The height value of the lifting mechanism that main website PLC real-time reception substation PLC sends;
Obtain the maxima and minima in real-time height value;
When lifting mechanism does upward movement, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H;
When lifting mechanism does descending motion, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H;
When diff-H is contracted to the 3rd preset difference value, recover by the frequency converter frequency of operation of the lifting mechanism turned down.
Visible, technical solutions according to the invention turn down the frequency of operation of the frequency converter of fireballing lifting mechanism by main website PLC, the object of adjustment lifting mechanism diff-H is reached by Frequency Converter Control asynchronous dynamo, do not need to carry out loaded down with trivial details artificial adjustment, in operational process, automatic height adjustment is poor, ensure each lifting mechanism rising or decline process in diff-H synchronization accuracy within setting height difference, not only increase frame, fall car efficiency, the safety and stability that ensure that guideway vehicle frame simultaneously, fall in car motion process.
Before the height value of the lifting mechanism that described main website PLC real-time reception substation PLC sends, also comprise:
Substation PLC obtains the elevation information of lifting mechanism by height detecting device;
Substation PLC processes the elevation information obtained, and draws the actual height value of lifting mechanism, and passes to main website PLC by fieldbus.The height detecting device that the present invention includes main website PLC, substation PLC and be connected with substation PLC, wherein, the lifting mechanism that substation PLC is responsible for controlling all is configured with height detecting device.First, substation PLC obtains the elevation information of lifting mechanism by height detecting device; Substation PLC processes the elevation information obtained, and draws the actual height value of lifting mechanism, and passes to main website PLC by fieldbus.And build whole control system by fieldbus, improve speed of response.
Described when lifting mechanism does upward movement, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H, be specially: when lifting mechanism does upward movement, the height value of each lifting mechanism is compared with minimum value; If when the diff-H of the height value of lifting mechanism and minimum value is more than or equal to the first preset difference value, main website PLC then turns down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H;
Described when lifting mechanism does descending motion, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H, be specially: when lifting mechanism does descending motion, the height value of each lifting mechanism is compared with maxim; If when the diff-H of the height value of lifting mechanism and maxim is more than or equal to the second preset difference value, main website PLC then turns down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H.
It should be noted that, no matter lifting mechanism does upward movement simultaneously, or descending motion simultaneously, in operational process, this programme is slowed down by fast lifting mechanism of regulating the speed, when diff-H is contracted to default third high degree difference, the running velocity recovering the above-mentioned lifting mechanism be decelerated again, to reach the object of the diff-H of adjustment lifting mechanism in real time, makes equipment operate steadily reliably.
Preferably, described first preset difference value is 4mm, and described second preset difference value is 4mm, and described 3rd preset difference value is 0mm.When the diff-H of lifting mechanism reach even be greater than 4mm time, main website PLC is by turning down the running velocity of fireballing lifting mechanism, reach each lifting mechanism rising or decline process in diff-H synchronization accuracy within 4mm diff-H, not only increase frame, fall car efficiency, the safety and stability that ensure that guideway vehicle frame simultaneously, fall in car motion process.When diff-H is reduced to 0mm, recover the running velocity of the above-mentioned lifting mechanism be decelerated.
Preferably, turning down of described frequency converter frequency of operation is turned down as 45Hz by 50Hz.Turn down as 45Hz by the frequency of operation of the frequency converter by fireballing lifting mechanism by 50Hz, the difference on the frequency of 5Hz can guarantee that equipment operates steadily reliably, excessive difference on the frequency adjustment can affect the safety in operation of equipment, and too small difference on the frequency was regulated the speed slowly, and efficiency is low.
Be below the system embodiment of the embodiment of the present invention, embodiment of the method for the present invention, system embodiment belong to same design, the detail content of not detailed description in system embodiment, can with reference to said method embodiment.
Fig. 2 is the structural representation of a kind of fixing car lifting J-Horner automatic error correction control system that the specific embodiment of the invention provides.As shown in Figure 2, one of the present invention is fixed car lifting J-Horner automatic error correction control system and is comprised:
Substation PLC, main website PLC and frequency converter;
Described substation PLC, the height value for the lifting mechanism reality by acquisition passes to main website PLC;
Described main website PLC, for the height value of the lifting mechanism that real-time reception substation PLC sends; Obtain the maxima and minima in real-time height value; When lifting mechanism does upward movement, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H; When lifting mechanism does descending motion, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H; When diff-H is contracted to the 3rd preset difference value, recover by the frequency converter frequency of operation of the lifting mechanism turned down.
Visible, technical solutions according to the invention turn down the frequency of operation of the frequency converter of fireballing lifting mechanism by main website PLC, the object of adjustment lifting mechanism diff-H is reached by Frequency Converter Control asynchronous dynamo, do not need to carry out loaded down with trivial details artificial adjustment, in operational process, automatic height adjustment is poor, ensure each lifting mechanism rising or decline process in diff-H synchronization accuracy within setting height difference, not only increase frame, fall car efficiency, the safety and stability that ensure that guideway vehicle frame simultaneously, fall in car motion process.
Also comprise height detecting device; Described height detecting device, for obtaining the elevation information of lifting mechanism to substation PLC; Substation PLC processes the elevation information obtained, and draws the height value of lifting mechanism reality, and passes to main website PLC by fieldbus.Preferably, described height detecting device adopts incremental encoder, and two-way single counting high speed counting machine of PLC inside, described substation is connected with described incremental encoder, and the impulse singla for gathering incremental encoder realizes displacement counting.According to AB phase automatic decision increase and decrease counting, identify that lifting mechanism rises or declines, obtain actual height after computing and pass to main website PLC by bus in real time.
Preferably, described first preset difference value is 4mm, and described second preset difference value is 4mm, and described 3rd preset difference value is 0mm.
Also comprise the asynchronous dynamo be connected with described frequency converter, by Frequency Converter Control Rotational Speed of Asynchronous Motor to adjust the diff-H of lifting mechanism; Turning down of described frequency converter frequency of operation is turned down as 45Hz by 50Hz.
In sum, main website PLC is the control algorithm center of whole system, be connected with substation PLC and frequency changing driving system by fieldbus, the data that process substation PLC gathers, data processed result is used for controlling frequency changing driving system in real time, thus reach the diff-H of adjustment lifting mechanism, reach the object of correction, ensure diff-H synchronization accuracy≤4mm in lifting mechanism synchronization lifting process.Whole control system is built by fieldbus, speed of response can be improved, make whole scan round periodic Control at Millisecond, frequency converter can improve the control accuracy of motor greatly by the vector controlled of band coder simultaneously, ensures that the response of whole system is reliable.System of the present invention not only can be used for an individual railcar frame and rises system, also can be used for synchro control during 3 joint marshallings, 6 joints or more marshalling interlock.Single-unit vehicle car lifting J-Horner is made up of 2 bogie truck lifting mechanisms and 4 car body lifting mechanisms, no matter is bogie truck lifting mechanism or car body lifting mechanism, control method of the present invention all can be adopted to realize the object of automatic deviation correction.
The above; be only the present invention's preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (10)
1. a fixing car lifting J-Horner automatic deviation correction control method, is characterized in that, comprising:
The height value of the lifting mechanism that main website PLC real-time reception substation PLC sends;
Obtain the maxima and minima in real-time height value;
When lifting mechanism does upward movement, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H;
When lifting mechanism does descending motion, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H;
When diff-H is contracted to the 3rd preset difference value, recover by the frequency converter frequency of operation of the lifting mechanism turned down.
2. one according to claim 1 fixes car lifting J-Horner automatic deviation correction control method, it is characterized in that, before the height value of the lifting mechanism that described main website PLC real-time reception substation PLC sends, also comprises:
Substation PLC obtains the elevation information of lifting mechanism by height detecting device;
Substation PLC processes the elevation information obtained, and draws the actual height value of lifting mechanism, and passes to main website PLC by fieldbus.
3. one according to claim 1 fixes car lifting J-Horner automatic deviation correction control method, it is characterized in that, it is described when lifting mechanism does upward movement, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H, be specially: when lifting mechanism does upward movement, the height value of each lifting mechanism is compared with minimum value; If when the diff-H of the height value of lifting mechanism and minimum value is more than or equal to the first preset difference value, main website PLC then turns down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H;
Described when lifting mechanism does descending motion, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H, be specially: when lifting mechanism does descending motion, the height value of each lifting mechanism is compared with maxim; If when the diff-H of the height value of lifting mechanism and maxim is more than or equal to the second preset difference value, main website PLC then turns down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H.
4. one according to claim 1 fixes car lifting J-Horner automatic deviation correction control method, it is characterized in that, described first preset difference value is 4mm, and described second preset difference value is 4mm, and described 3rd preset difference value is 0mm.
5. one according to claim 1 fixes car lifting J-Horner automatic deviation correction control method, it is characterized in that, turning down of described frequency converter frequency of operation is turned down as 45Hz by 50Hz.
6. a fixing car lifting J-Horner automatic error correction control system, is characterized in that, comprising: substation PLC, main website PLC and frequency converter;
Described substation PLC, the height value for the lifting mechanism reality by acquisition passes to main website PLC;
Described main website PLC, for the height value of the lifting mechanism that real-time reception substation PLC sends; Obtain the maxima and minima in real-time height value; When lifting mechanism does upward movement, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the first preset difference value with minimum value diff-H; When lifting mechanism does descending motion, turn down the frequency converter frequency of operation being more than or equal to the lifting mechanism of the second preset difference value with maxim diff-H; When diff-H is contracted to the 3rd preset difference value, recover by the frequency converter frequency of operation of the lifting mechanism turned down.
7. one according to claim 6 fixes car lifting J-Horner automatic error correction control system, it is characterized in that, also comprises height detecting device;
Described height detecting device, for obtaining the elevation information of lifting mechanism to substation PLC; Substation PLC processes the elevation information obtained, and draws the height value of lifting mechanism reality, and passes to main website PLC by fieldbus.
8. one according to claim 7 fixes car lifting J-Horner automatic error correction control system, it is characterized in that, described height detecting device adopts incremental encoder, two-way single counting high speed counting machine of PLC inside, described substation is connected with described incremental encoder, and the impulse singla for gathering incremental encoder realizes displacement counting.
9. one according to claim 6 fixes car lifting J-Horner automatic error correction control system, it is characterized in that, described first preset difference value is 4mm, and described second preset difference value is 4mm, and described 3rd preset difference value is 0mm.
10. one according to claim 6 fixes car lifting J-Horner automatic error correction control system, it is characterized in that, also comprises the asynchronous dynamo be connected with described frequency converter, by Frequency Converter Control Rotational Speed of Asynchronous Motor to adjust the diff-H of lifting mechanism; Turning down of described frequency converter frequency of operation is turned down as 45Hz by 50Hz.
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| CN201410472128.8A CN104229671A (en) | 2014-09-16 | 2014-09-16 | Automatic deviation rectification control method and system for fixed car lifting jack |
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| CN201410472128.8A CN104229671A (en) | 2014-09-16 | 2014-09-16 | Automatic deviation rectification control method and system for fixed car lifting jack |
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Application publication date: 20141224 |