CN103771268A - Parking control method, device and frequency converter applicable to rotation mechanism - Google Patents
Parking control method, device and frequency converter applicable to rotation mechanism Download PDFInfo
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- CN103771268A CN103771268A CN201410010088.5A CN201410010088A CN103771268A CN 103771268 A CN103771268 A CN 103771268A CN 201410010088 A CN201410010088 A CN 201410010088A CN 103771268 A CN103771268 A CN 103771268A
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Abstract
The embodiment of the invention discloses a parking control method, a device and a frequency converter applicable to a rotation mechanism. The method comprises the steps of monitoring the state of an operation device when the rotation mechanism is in an operation state; converting the monitored state of the operation device into a current speed reducing time according to a preset corresponding relation between the state of the operation device and a speed reducing time; performing an operation of reducing speed for parking according to the current speed reducing time. According to the parking control method of the rotation mechanism, the state of the operation device corresponds to the speed reducing time, so that a driver of the rotation mechanism can simply and conveniently adjust the speed reducing time by changing the state of the operation device; debugging people do not need to debug on the site, so that the labor cost is saved. In addition, the driver can make adjustment in real time according to the actual condition on the site; the speed requirement can be met, the stability can be ensured and the safety problem can be avoided simultaneously.
Description
Technical field
The present invention relates to variable frequency control field, relate in particular to a kind of control method for stopping for swing type mechanism, device and frequency converter.
Background technology
Tower crane (also claiming tower machine) is the main hauling operation instrument of building house and bridge.The crane arm of tower machine is a kind of common swing type mechanism, because crane arm rotator inertia is large, if shut down excessive velocities, must cause the shake of crane arm, thereby reduces stability; But, if shutdown speed is excessively slow, may affect again construction speed.
At present, the swing type mechanisms such as derrick runway girder are stopped while controlling, often can only be by commissioning staff to on-the-spot by debugging the parameter of frequency converter, determine that one can meet rapidity and is unlikely to again too poor value deceleration time of stability.Be worth comparatively fixing this deceleration time, can not adapt to on-the-spot working conditions change.And, once run into emergency situation, driver can not quick adjusting deceleration time, there is potential safety hazard.
Summary of the invention
Embodiment of the present invention technical matters to be solved is, for being difficult in prior art neatly the swing type mechanism defect of controlling of stopping, a kind of control method for stopping for swing type mechanism, device and frequency converter are provided, the stopping speed that can regulate simply and easily swing type mechanism guarantees stability in meeting speed requirement.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of control method for stopping for swing type mechanism, comprising:
When swing type mechanism is during in running state, the state of monitoring operating control;
According to the corresponding relation of the state of the described operating control setting in advance and deceleration time, the state of the operating control monitoring is converted to current deceleration time;
According to carrying out ramp to stop operation described current deceleration time.
Wherein, described swing type mechanism is the crane arm of tower crane, described operating control be described tower crane original, for controlling the running velocity of described tower crane and the bar handle of service direction; The state of described bar handle comprises the first deflection state, state and the second deflection state make zero; Wherein, the state of making zero refers to the make zero position of bar handle when static, the bar handle current location that refers to the first deflection state position of relatively making zero has the deflection amplitude on first direction, the bar handle current location that refers to the second deflection state position of relatively making zero has the deflection amplitude in second direction, and wherein second direction is contrary with first direction.
Wherein, the state of the described bar handle that described basis sets in advance and the corresponding relation of deceleration time, the step that the state of the bar handle monitoring is converted to current deceleration time comprises:
When bar handle changes into while making zero state from the first deflection state, directly using default deceleration time T0 as current T1 deceleration time;
In the time that bar handle is the second deflection state from the first deflection state or the state-transition that makes zero, calculate current T1 deceleration time according to the deflection amplitude of described bar handle.
Wherein, the step that the described deflection amplitude according to described bar handle calculates current deceleration time comprises:
According to the corresponding relation between the deflection amplitude of the bar handle setting in advance and inverted running frequency, the deflection amplitude of current bar handle is converted to current inverted running frequency F;
Calculate current deceleration time according to described current inverted running frequency F.
Wherein, describedly calculate the step of current deceleration time according to described current inverted running frequency F and comprise:
Set in advance the shortest deceleration time of Tm;
According to formula T1=(F/ motor rated frequency) * (T0-Tm)+Tm calculates described current T1 deceleration time.
Correspondingly, the present invention also provides a kind of shutoff control unit for swing type mechanism, comprising:
Monitoring modular, for when swing type mechanism is during in running state, the state of monitoring operating control;
Conversion module, for according to the state of described operating control and the corresponding relation of deceleration time that set in advance, is converted to current deceleration time by the state of the operating control monitoring;
Execution module, for operating according to carrying out ramp to stop described current deceleration time.
Wherein, described swing type mechanism is the crane arm of tower crane, described operating control be described tower crane original, for controlling the running velocity of described tower crane and the bar handle of service direction; The state of described operating control comprises the first deflection state, state and the second deflection state make zero; Wherein, the state of making zero refers to the make zero position of bar handle when static, the bar handle current location that refers to the first deflection state position of relatively making zero has the deflection amplitude on first direction, the bar handle current location that refers to the second deflection state position of relatively making zero has the deflection amplitude in second direction, and wherein second direction is contrary with first direction;
Described conversion module comprises:
The first modular converter, for changing into while making zero state from the first deflection state when operating control, directly using default deceleration time T0 as current T1 deceleration time;
The second modular converter, in the time that operating control is the second deflection state from the first deflection state or the state-transition that makes zero, calculates current T1 deceleration time according to the deflection amplitude of described operating control.
Wherein, described the second modular converter comprises:
Inverted running frequency translation module, for according to the corresponding relation between deflection amplitude and the inverted running frequency of the operating control setting in advance, is converted to current inverted running frequency F by the deflection amplitude of current operating control;
Deceleration time acquisition module, for calculating current deceleration time according to described current inverted running frequency F.
Wherein, described deceleration time, acquisition module comprised:
Module is set, for setting in advance the shortest deceleration time of Tm the shortest deceleration time;
Computing module, for according to formula T1=(F/ motor rated frequency) * (T0-Tm)+Tm calculates described current T1 deceleration time.
In addition, the present invention also provides a kind of frequency converter, comprises the shutoff control unit for swing type mechanism described in above any one.
Implement the embodiment of the present invention, there is following beneficial effect: by the state of operating control is corresponding with deceleration time, the driver of swing type mechanism can be by the state of change operating control simply and easily to regulating deceleration time, do not need commissioning staff to debug to scene, saved human cost; In addition, driver can carry out real-time monitoring according to on-site actual situations, in meeting speed requirement, can also guarantee stability, avoids occurring safety problem.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the first embodiment diagram of circuit of the control method for stopping for swing type mechanism provided by the invention;
Fig. 2 is the second embodiment diagram of circuit of the control method for stopping for swing type mechanism provided by the invention;
Fig. 3 is the 3rd embodiment diagram of circuit of the control method for stopping for swing type mechanism provided by the invention;
Fig. 4 is the first example structure schematic diagram of the shutoff control unit for swing type mechanism provided by the invention;
Fig. 5 is the second example structure schematic diagram of the shutoff control unit for swing type mechanism provided by the invention;
Fig. 6 is the 3rd example structure schematic diagram of the shutoff control unit for swing type mechanism provided by the invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Referring to Fig. 1, is the first embodiment diagram of circuit of the control method for stopping for swing type mechanism provided by the invention, and the method comprises:
S101, when swing type mechanism is when running state (being that swing type mechanism rotates), the state of monitoring operating control.Wherein, from originating, say, operating control can be to be exclusively used in to stop to control the human-computer interaction device who handles, and can be also the original human-computer interaction device who controls swing type mechanism running velocity and service direction for enabling driver of swing type mechanism.Certainly, preferably, select the original human-computer interaction device of swing type mechanism as operating control of the present invention, without adding extra hardware device, not only can facilitate driver to operate consistently like this, can also save cost.Say from structure type, operating control can be the human-computer interaction device of any type such as control panel, keyboard, touch-screen, bearing circle, bar handle.Conventionally, adopt bar handle to control running velocity and the service direction of swing type mechanism (for example crane arm of tower machine), because the more convenient driver of bar handle handles.That is to say, preferably, the operating control in the present invention be original in swing type mechanism, for controlling the bar handle of swing type mechanism running velocity and service direction.In the time that operating control is bar handle, can monitor by following this exemplary mode the state of operating control: bar handle, drive link, quadrant gear connect successively, and quadrant gear engages with finishing bevel gear cuter, and code-disc is coaxially connected with finishing bevel gear cuter; In the time that driver rotates bar handle, drive drive link, thereby drive quadrant gear to rotate, and then band dynamic bevel gear rotates, the code-disc coaxial with finishing bevel gear cuter also rotates thereupon, the position that now can turn over according to code-disc by opto-electronic pickup converses the current rotation direction of bar handle and rotation amplitude, the i.e. state of operating control.
The state of described operating control and the corresponding relation of deceleration time that S102, basis set in advance, be converted to current deceleration time by the state of the operating control monitoring.For example, if operating control is to be exclusively used in to stop to control the human-computer interaction device who handles, different deceleration times of corresponding button or gear can be set on operating control, when detecting that certain button is pressed or operating control during in certain gear, can be using this button or deceleration time corresponding to gear as current deceleration time.Again for example, if operating control original human-computer interaction device that is swing type mechanism, original this operating control state can be corresponded respectively to different deceleration times, in the time operating control being detected in certain state, can be using deceleration time corresponding this state as current deceleration time.
S103, according to carrying out ramp to stop operation described current deceleration time.
The control method for stopping for swing type mechanism that the embodiment of the present invention provides, by the state of operating control is corresponding with deceleration time, the driver of swing type mechanism can be by the state of change operating control simply and easily to regulating deceleration time, do not need commissioning staff to debug to scene, saved human cost; In addition, driver can carry out real-time monitoring according to on-site actual situations, in meeting speed requirement, can also guarantee stability, avoids occurring safety problem.
Preferably, use the original human-computer interaction device of swing type mechanism as operating control of the present invention, can facilitate like this driver according to the driving habit flexible operating of oneself.The crane arm that take swing type mechanism is tower machine is example, the original human-computer interaction device of tower machine is generally bar handle, the state of bar handle generally includes the first deflection state, state and the second deflection state make zero, wherein, the state of making zero refers to the make zero position of bar handle when static, the bar handle current location that refers to the first deflection state position of relatively making zero has the deflection amplitude on first direction, the bar handle current location that refers to the second deflection state position of relatively making zero has the deflection amplitude in second direction, and wherein second direction is contrary with first direction.Derrick runway girder is positioned at while making zero position in the state of making zero, and in the time starting derrick runway girder, driver beats bar handle to forward state by the state of making zero, and can make the operation of crane arm forward; In the time starting derrick runway girder, driver beats bar handle to inverted status by the state of making zero, and can make crane arm inverted running.But in prior art, when derrick runway girder is during in running state, driver is beaten bar handle to inverted status or by bar handle and is beaten to forward state by inverted status or the state of making zero by forward state or the state of making zero, and is all invalid operation.The present invention can utilize these invalid operation of the prior art to the control of stopping of tower machine.It should be noted that herein, when the first deflection state is the current normal operation of tower machine, the state of bar handle, can be both forward state, can be also inverted status.Below with reference to Fig. 2-3, take the bar handle of tower machine as example, the control method for stopping for swing type mechanism provided by the invention is described in detail.
Referring to Fig. 2, is the second embodiment diagram of circuit of the control method for stopping for swing type mechanism provided by the invention, and the method comprises:
S201, when derrick runway girder is during in running state, the state of monitoring bar handle, the state of described bar handle comprises the first deflection state, state and the second deflection state make zero.
When bar handle is converted to while making zero state by the first deflection state, execution step S202.Are set to S202, current deceleration time default T0 deceleration time.Step S202 has retained the mode of stopping and controlling in prior art, bar handle is got back to the state of making zero corresponding to default T0 deceleration time, this default T0 deceleration time is that adjustor debugs setting in advance, like this can so that driver not running into the control operation of stopping when little of emergency case or changes in environmental conditions.Next perform step S204.
In the time that bar handle is converted to the second deflection state by the first deflection state or the state of making zero, execution step S203.S203, calculate current deceleration time according to the deflection amplitude of described bar handle.For example, can in advance deflection amplitude be divided into several intervals, each interval corresponds respectively to a deceleration time.Again for example, can calculate the deflection amplitude of bar handle and the relation between deceleration time according to sensitivity, the operating mode etc. of the mechanical condition of swing type mechanism, brake equipment, thus by different deflection amplitudes corresponding to different deceleration times.Next perform step S204.
S204, according to carrying out ramp to stop operation described current deceleration time.Certainly, in execution step S204, as long as derrick runway girder, still in running state, can perform step S201, until derrick runway girder is in dead ship condition simultaneously.
Referring to Fig. 3, is the 3rd embodiment diagram of circuit of the control method for stopping for swing type mechanism provided by the invention, and the method comprises:
S301, when derrick runway girder is during in running state, the state of monitoring bar handle, the state of described bar handle comprises the first deflection state, state and the second deflection state make zero.
When bar handle is converted to while making zero state by the first deflection state, execution step S302.Are set to S302, current deceleration time default T0 deceleration time.Next perform step S305.
In the time that bar handle is converted to the second deflection state by the first deflection state or the state of making zero, execution step S303.Corresponding relation between deflection amplitude and the inverted running frequency of the bar handle that S303, basis set in advance, is converted to current inverted running frequency F by the deflection amplitude of current bar handle.Next perform step S304.
S304, calculate current deceleration time according to described current inverted running frequency F.Those skilled in the art are more known to the inverted running frequency computation part method of deceleration time, do not repeat them here.But preferably, step S304 can comprise: set in advance the shortest deceleration time of Tm; According to formula T1=(F/ motor rated frequency) * (T0-Tm)+Tm calculates described current T1 deceleration time.By setting one for representing the shortest deceleration time of the Tm of the shortest deceleration time that swing type mechanism can bear, the deceleration time that can avoid swing type mechanism to calculate in cannot performing step S304, can also avoid swing type mechanism to cause too soon safety misadventure because stopping.Next perform step S305.
S305, according to carrying out ramp to stop operation described current deceleration time.Certainly, in execution step S305, as long as derrick runway girder, still in running state, can perform step S301, until derrick runway girder is in dead ship condition simultaneously.
Referring to Fig. 4, is the first example structure schematic diagram of the shutoff control unit 400 for swing type mechanism provided by the invention, and this device 400 comprises:
Monitoring modular 410, for when swing type mechanism is when running state (being that swing type mechanism rotates), the state of monitoring operating control.Wherein, from originating, say, operating control can be to be exclusively used in to stop to control the human-computer interaction device who handles, and can be also the original human-computer interaction device who controls swing type mechanism running velocity and service direction for enabling driver of swing type mechanism.Certainly, preferably, select the original human-computer interaction device of swing type mechanism as operating control of the present invention, without adding extra hardware device, not only can facilitate driver to operate consistently like this, can also save cost.Say from structure type, operating control can be the human-computer interaction device of any type such as control panel, keyboard, touch-screen, bearing circle, bar handle.Conventionally, adopt bar handle to control running velocity and the service direction of swing type mechanism (for example tower machine), because the more convenient driver of bar handle handles.That is to say, preferably, the operating control in the present invention be original in swing type mechanism, for controlling the bar handle of swing type mechanism running velocity and service direction.In the time that operating control is bar handle, can monitor by following this exemplary mode the state of operating control: bar handle, drive link, quadrant gear connect successively, and quadrant gear engages with finishing bevel gear cuter, and code-disc is coaxially connected with finishing bevel gear cuter; In the time that driver rotates bar handle, drive drive link, thereby drive quadrant gear to rotate, and then band dynamic bevel gear rotates, the code-disc coaxial with finishing bevel gear cuter also rotates thereupon, the position that now can turn over according to code-disc by opto-electronic pickup converses the current rotation direction of bar handle and rotation amplitude, the i.e. state of operating control.
The shutoff control unit for swing type mechanism that the embodiment of the present invention provides, by the state of operating control is corresponding with deceleration time, the driver of swing type mechanism can be by the state of change operating control simply and easily to regulating deceleration time, do not need commissioning staff to debug to scene, saved human cost; In addition, driver can carry out real-time monitoring according to on-site actual situations, in meeting speed requirement, can also guarantee stability, avoids occurring safety problem.
Preferably, use the original human-computer interaction device of swing type mechanism as operating control of the present invention, can facilitate like this driver according to the driving habit flexible operating of oneself.The crane arm that take swing type mechanism is tower machine is example, the original human-computer interaction device of tower machine is generally bar handle, the state of bar handle generally includes the first deflection state, state and the second deflection state make zero, wherein, the state of making zero refers to the make zero position of bar handle when static, the bar handle current location that refers to the first deflection state position of relatively making zero has the deflection amplitude on first direction, the bar handle current location that refers to the second deflection state position of relatively making zero has the deflection amplitude in second direction, and wherein second direction is contrary with first direction.The crane arm of tower machine is positioned at while making zero position in the state of making zero, and in the time starting crane arm, driver beats bar handle to forward state by the state of making zero, and can make the operation of swing type mechanism forward; In the time starting crane arm, driver beats bar handle to inverted status by the state of making zero, and can make swing type mechanism inverted running.But in prior art, when derrick runway girder is during in running state, driver is beaten bar handle to inverted status or by bar handle and is beaten to forward state by inverted status or the state of making zero by forward state or the state of making zero, and is all invalid operation.The present invention can utilize these invalid operation of the prior art to the control of stopping of tower machine.It should be noted that herein, when the first deflection state is the current normal operation of tower machine, the state of bar handle, can be both forward state, can be also inverted status.Below with reference to Fig. 5-6, take the bar handle of tower machine as example, the control method for stopping for swing type mechanism provided by the invention is described in detail.
Referring to Fig. 5, is the second example structure schematic diagram of the shutoff control unit 400 for swing type mechanism provided by the invention.Wherein, conversion module 420 comprises:
The first modular converter 510, for being converted to while making zero state by the first deflection state when bar handle, is set to default T0 deceleration time current deceleration time.This can retain the mode of stopping and controlling in prior art, bar handle is got back to the state of making zero corresponding to default T0 deceleration time, this default T0 deceleration time is that adjustor debugs setting in advance, is convenient to driver not running into the control operation of stopping when little of emergency case or changes in environmental conditions.
The second modular converter 520, in the time that bar handle is converted to the second deflection state by the first deflection state or the state of making zero, calculates current deceleration time according to the deflection amplitude of described bar handle.For example, can in advance deflection amplitude be divided into several intervals, each interval corresponds respectively to a deceleration time.Again for example, can calculate the deflection amplitude of bar handle and the relation between deceleration time according to sensitivity, the operating mode etc. of the mechanical condition of swing type mechanism, brake equipment, thus by different deflection amplitudes corresponding to different deceleration times.
Referring to Fig. 6, is the 3rd example structure schematic diagram of the shutoff control unit for swing type mechanism provided by the invention.Wherein, the second modular converter 520 can comprise:
Inverted running frequency translation module 610, for in the time that bar handle is converted to the second deflection state by the first deflection state or the state of making zero, according to the corresponding relation between the deflection amplitude of the bar handle setting in advance and inverted running frequency, the deflection amplitude of current bar handle is converted to current inverted running frequency F.
Deceleration time acquisition module 620, for calculating current deceleration time according to described current inverted running frequency F.Those skilled in the art are more known to the inverted running frequency computation part method of deceleration time, do not repeat them here.But preferably, deceleration time, acquisition module 620 can comprise: module is set, for setting in advance the shortest deceleration time of Tm the shortest deceleration time; Computing module, for according to formula T1=(F/ motor rated frequency) * (T0-Tm)+Tm calculates described current T1 deceleration time.By setting the shortest deceleration time of a Tm for the shortest deceleration time of representing that swing type mechanism can bear, can avoid swing type mechanism cannot realize the deceleration time calculating, can also avoid swing type mechanism to cause too soon safety misadventure because stopping.
The above-mentioned shutoff control unit for swing type mechanism can be integrated in the frequency converter of swing type mechanism.Driver can in moderating process as required, constantly adjust inverted running frequency, thereby regulates deceleration time, to reach oneself the most satisfied driving effect.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, can carry out the hardware that instruction is relevant by computer program to complete, described program can be stored in a computer read/write memory medium, this program, in the time carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosed is only a kind of preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, one of ordinary skill in the art will appreciate that all or part of flow process that realizes above-described embodiment, and the equivalent variations of doing according to the claims in the present invention, still belong to the scope that invention is contained.
Claims (10)
1. for a control method for stopping for swing type mechanism, it is characterized in that, comprising:
When swing type mechanism is during in running state, the state of monitoring operating control;
According to the corresponding relation of the state of the described operating control setting in advance and deceleration time, the state of the operating control monitoring is converted to current deceleration time;
According to carrying out ramp to stop operation described current deceleration time.
2. the control method for stopping for swing type mechanism as claimed in claim 1, it is characterized in that, described swing type mechanism is the crane arm of tower crane, described operating control be described tower crane original, for controlling the running velocity of described tower crane and the bar handle of service direction; The state of described bar handle comprises the first deflection state, state and the second deflection state make zero; Wherein, the state of making zero refers to the make zero position of bar handle when static, the bar handle current location that refers to the first deflection state position of relatively making zero has the deflection amplitude on first direction, the bar handle current location that refers to the second deflection state position of relatively making zero has the deflection amplitude in second direction, and wherein second direction is contrary with first direction.
3. the control method for stopping for swing type mechanism as claimed in claim 2, it is characterized in that, the state of the described bar handle that described basis sets in advance and the corresponding relation of deceleration time, the step that the state of the bar handle monitoring is converted to current deceleration time comprises:
When bar handle changes into while making zero state from the first deflection state, directly using default deceleration time T0 as current T1 deceleration time;
In the time that bar handle is the second deflection state from the first deflection state or the state-transition that makes zero, calculate current T1 deceleration time according to the deflection amplitude of described bar handle.
4. the control method for stopping for swing type mechanism as claimed in claim 3, is characterized in that, the step that the described deflection amplitude according to described bar handle calculates current deceleration time comprises:
According to the corresponding relation between the deflection amplitude of the bar handle setting in advance and inverted running frequency, the deflection amplitude of current bar handle is converted to current inverted running frequency F;
Calculate current deceleration time according to described current inverted running frequency F.
5. the control method for stopping for swing type mechanism as claimed in claim 4, is characterized in that, describedly calculates the step of current deceleration time according to described current inverted running frequency F and comprises:
Set in advance the shortest deceleration time of Tm;
According to formula T1=(F/ motor rated frequency) * (T0-Tm)+Tm calculates described current T1 deceleration time.
6. for a shutoff control unit for swing type mechanism, it is characterized in that, comprising:
Monitoring modular, for when swing type mechanism is during in running state, the state of monitoring operating control;
Conversion module, for according to the state of described operating control and the corresponding relation of deceleration time that set in advance, is converted to current deceleration time by the state of the operating control monitoring;
Execution module, for operating according to carrying out ramp to stop described current deceleration time.
7. the shutoff control unit for swing type mechanism as claimed in claim 6, it is characterized in that, described swing type mechanism is the crane arm of tower crane, described operating control be described tower crane original, for controlling the running velocity of described tower crane and the bar handle of service direction; The state of described operating control comprises the first deflection state, state and the second deflection state make zero; Wherein, the state of making zero refers to the make zero position of bar handle when static, the bar handle current location that refers to the first deflection state position of relatively making zero has the deflection amplitude on first direction, the bar handle current location that refers to the second deflection state position of relatively making zero has the deflection amplitude in second direction, and wherein second direction is contrary with first direction;
Described conversion module comprises:
The first modular converter, for changing into while making zero state from the first deflection state when operating control, directly using default deceleration time T0 as current T1 deceleration time;
The second modular converter, in the time that operating control is the second deflection state from the first deflection state or the state-transition that makes zero, calculates current T1 deceleration time according to the deflection amplitude of described operating control.
8. the shutoff control unit for swing type mechanism as claimed in claim 7, is characterized in that, described the second modular converter comprises:
Inverted running frequency translation module, for according to the corresponding relation between deflection amplitude and the inverted running frequency of the operating control setting in advance, is converted to current inverted running frequency F by the deflection amplitude of current operating control;
Deceleration time acquisition module, for calculating current deceleration time according to described current inverted running frequency F.
9. the shutoff control unit for swing type mechanism as claimed in claim 8, is characterized in that, described deceleration time, acquisition module comprised:
Module is set, for setting in advance the shortest deceleration time of Tm the shortest deceleration time;
Computing module, for according to formula T1=(F/ motor rated frequency) * (T0-Tm)+Tm calculates described current T1 deceleration time.
10. a frequency converter, is characterized in that, comprises the shutoff control unit for swing type mechanism as described in any one in claim 6-9.
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| CN201410010088.5A CN103771268B (en) | 2014-01-09 | 2014-01-09 | Control method for stopping, device and converter for slew gear |
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