CN102497161B - Driving device, control device and control method for high-current equipment - Google Patents
Driving device, control device and control method for high-current equipment Download PDFInfo
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- CN102497161B CN102497161B CN201110356119.9A CN201110356119A CN102497161B CN 102497161 B CN102497161 B CN 102497161B CN 201110356119 A CN201110356119 A CN 201110356119A CN 102497161 B CN102497161 B CN 102497161B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/032—Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
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Abstract
The invention discloses a control device for a high-current device. The control device comprises a first temperature sensor, a second temperature sensor, a power supply management module and a microcontroller, wherein the first temperature sensor is used for detecting and sending the ambient temperature of the high-current equipment to the microcontroller; the second temperature sensor is also used for detecting and sending the temperature of a drive module to the microcontroller; the power supply management module is used for powering each part of the control device; when the high-current equipment is started up, the acquired power supply of the power supply management module is within working voltage, and the ambient temperature is less than threshold value, the microcontroller transmits a preset PWM (Pulse Width Modulation) signal to the drive module; and after the start-up of the high-current equipment, the temperature of the second temperature sensor is regularly received, when the temperature is larger than the working temperature threshold value, the current PWM duty ratio is gradually increased to the maximal value of the PWM duty ratio. The invention also discloses a control method and a driving device for the high-current equipment, and ensures that the high-current equipment can be used in lower temperature.
Description
Technical field
The present invention relates to high-current equipment control field, relate in particular to drive unit, control device and the control method of high-current equipment.
Background technology
Along with social development, the particularly raising of high-current equipment control technology, various binding apparatus or hoisting apparatus are all designed to electronic control, such as the electric capstan of the electric winch in Goods binding, jeep or offroad vehicle, helicopter landing gear etc., give logistics transportation, jeep or offroad vehicle rescue or save oneself, that helicopter rescue or freight transportation have brought is greatly convenient, and operating efficiency is improved greatly.
The electric winch that Goods binding on market is used now, the electric capstan of offroad vehicle, helicopter landing gear etc., the control device of the high-current equipment using is very simple, control device uses electromagnetic relay to control, electromagnetic relay is directly connected with high-current equipment, electromagnetic relay is generally comprised of electromagnet, armature, spring leaf, contact etc., and its operating circuit consists of control circuit and operating circuit two parts.As long as add certain voltage at coil two ends, in coil, will flow through certain electric current, thereby generation galvanomagnetic effect, armature will overcome the pulling force of spring under the effect of electromagnetic attracting force to be inhaled to iron core, thereby with moving contact and fixed contact (normally opened contact) adhesive of moving armature.After coil blackout, the suction of electromagnetism also disappears thereupon, and armature will return to original position at the pulling force of spring, makes moving contact and original fixed contact (normally-closed contact) release.Adhesive like this, release, thus reached the object of conducting to drive high-current equipment running, cut-out to turn round to stop high-current equipment in circuit.For " often open, normally closed " contact of relay, can distinguish like this: the fixed contact in off-state when relay coil is not switched on, is called " normally opened contact "; Fixed contact in on-state is called " normally-closed contact ".
While using electromagnetic relay to control, because the operating temperature range of high-current equipment is narrow, under the environment lower than minimum normal working temperature, the magnetic resistance of high-current equipment can increase, and starting torsion can increase, and the frictional force of reduction gearing also can increase, lubricating oil can become sticky and thickly even solidify, lubrication is weakened, if now use electromagnetic relay directly to drive high-current equipment forward or reversion, will cause high-current equipment to rotate.And the normal working temperature scope of electromagnetic relay is also narrow, be generally-20 ℃～70 ℃, during lower than minimum normal working temperature, electromagnetic relay also cannot be worked.
In addition, electromagnetic relay can produce a large amount of heat when driving high-current equipment running, if heat is not shed, cannot use for a long time.Existing way is to use huge fin, in time heat is shed, and cannot accomplish the miniaturization of control device.
And while adopting electromagnetic relay to control, control mode is by key control.For example, have one and draw control line above the electric capstan of offroad vehicle, the end of control line is button, button has 3 shelves, tighten up, stop and loosening, pressing and tighten up button, electric capstan tightens up action, unclamp this button, button is got back to stop position automatically, presses and loosens button, and electric capstan carries out loosening up, unclamp this button, button is got back to stop position automatically.Can only manually control like this, and cannot realize long-range, controlled in wireless, also cannot accurately measure pulling force and control according to the size of pulling force.
In sum, existing high-current equipment and control device thereof cannot use when low temperature, and control device volume is large, cooling system is complicated, can only realize manual control, can not realize remote wireless control, also cannot realize accurate tension measurement and control according to the size of pulling force.
Summary of the invention
In view of this, the present invention proposes a kind of control device of high-current equipment, and high-current equipment can be used when low temperature.
Another object of the present invention is the drive unit that proposes a kind of high-current equipment, and high-current equipment can be used when low temperature.
The present invention also proposes a kind of control method of high-current equipment, and high-current equipment can be used when low temperature.
For achieving the above object, the technical scheme of the embodiment of the present invention is achieved in that
A control device for high-current equipment, this device comprises: the first temperature sensor, the second temperature sensor, power management module and microcontroller, wherein:
The first temperature sensor, for detection of the residing ambient temperature of high-current equipment, and sends to microcontroller by described temperature signal;
The second temperature sensor, for detection of the temperature of high-current equipment driver module, and sends to microcontroller by described temperature signal;
Power management module, for external power source is carried out to dividing potential drop, for the each several part of control device provides voltage source;
Microcontroller, for when high-current equipment start-up course, gather the supply voltage of power management module input, when gathered supply voltage is within the scope of its normal working voltage, and when the ambient temperature of the first temperature sensor receiving is less than predefined ambient temperature threshold value, export predefined pulse width modulation (PWM) signal to high-current equipment driver module;
After high-current equipment start-up course finishes, regularly receive the temperature signal from the second temperature sensor, when described temperature value is greater than predefined driver module working temperature threshold value, successively increase the duty ratio of current pwm signal, until reach predefined pwm signal duty ratio maximum.
A drive unit for high-current equipment, this device comprises: be controlled by driver module, Power Entry Module and the printing board PCB aluminium base of the control device of high-current equipment as mentioned above, wherein:
Driver module, for receiving the pwm pulse signal of self-control device, according to the required voltage and current of described pwm pulse signal output high-current equipment;
Power Entry Module, for offering external power source the driver module of high-current equipment and the power management module of described control device;
The driver module of described high-current equipment is attached on PCB aluminium base.
A control method for high-current equipment, comprises the following steps:
In the time of in high-current equipment start-up course, gather outer power voltage, when gathered supply voltage is within the scope of its normal working voltage, and the temperature that high-current equipment environment of living in detected is while being less than predefined ambient temperature threshold value, exports predefined pulse width modulation (PWM) signal;
After high-current equipment start-up course finishes, regularly detect the temperature of high-current equipment driver module, when described temperature value is greater than predefined driver module working temperature threshold value, successively increase the duty ratio of current pwm signal, until reach predefined pwm signal duty ratio maximum.
Beneficial effect of the present invention is; by rotating speed or the startup of controlling high-current equipment according to current value of thrust, ambient temperature value and supply voltage in the operation process of high-current equipment, stop; high-current equipment can be used when low temperature; at electric current, there is realizing when abnormal equipment protection; can realize accurate tension measurement and according to the size of pulling force, control the use of high-current equipment; and by using PCB aluminium base radiator structure can reduce the volume of control device, also can realize wireless, Long-distance Control.
Accompanying drawing explanation
Fig. 1 is the structure drawing of device of the embodiment of the present invention;
Fig. 2 is the method flow diagram of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below, by specific embodiment and referring to accompanying drawing, the present invention is described in detail.
The present invention is by detecting the residing ambient temperature of high-current equipment, and according to described ambient temperature, adjust the output of pwm signal, high-current equipment can be used when low temperature, by detection, flow through the size of current of high-current equipment, control high-current equipment running, can there is realizing when abnormal equipment protection at electric current, by detecting the output torque of high-current equipment, can realize accurate tension measurement and according to the size of pulling force, control the use of high-current equipment, and, by using printing board PCB aluminium base radiator structure can reduce the volume of control device.The present invention also can realize wireless, Long-distance Control.
As shown in Figure 1, a kind of control device of high-current equipment, comprising the apparatus structure of the embodiment of the present invention: the first temperature sensor, the second temperature sensor, power management module and microcontroller, wherein:
The first temperature sensor, for detection of the residing ambient temperature of high-current equipment, and sends to microcontroller by described temperature signal; Microcontroller is converted into actual temperature value by described temperature signal.
Preferably, the first temperature sensor is integrated in microcontroller, can accurately measure the temperature of driver module and the volume that reduces control device.
The second temperature sensor, for detection of the temperature of high-current equipment driver module, and sends to microcontroller by described temperature signal.
Preferably, described the second temperature sensor is attached on printing board PCB aluminium base.
Power management module, for external power source is carried out to dividing potential drop, for the each several part of control device provides voltage source.
Described power management module can consist of over-voltage over-current protection circuit, electric source filter circuit and voltage stabilizing circuit; because the control device of high-current equipment is mainly used on automobile or helicopter; so power management module has passed through particular design; can include negative voltage impact protection circuit, high-voltage impulse protection circuit, common mode filtering circuit, DC-DC reduction voltage circuit, linear voltage-stabilizing circuit, to guarantee that this module can relatively work in rugged environment.
Microcontroller, for when high-current equipment start-up course, gather the supply voltage of power management module input, when gathered supply voltage is within the scope of its normal working voltage, and when the ambient temperature of the first temperature sensor receiving is less than predefined ambient temperature threshold value, export predefined pulse width modulation (PWM) signal to high-current equipment driver module;
After high-current equipment start-up course finishes, regularly receive the temperature signal from the second temperature sensor, when described temperature value is greater than predefined driver module working temperature threshold value, successively increase the duty ratio of current pwm signal, until reach predefined pwm signal duty ratio maximum.
Wherein, the supply voltage of described power management module input is outer power voltage, and its normal working voltage scope is 8V～16V.
Described ambient temperature threshold value is demarcated by the characteristic of high-current equipment and high-current equipment driver module, is specially:
If during lower than temperature X, start after the operation of high-current equipment forward or reverse can cause the magnetic resistance of high-current equipment to increase, to start that torsion increases, the frictional force of reduction gearing increases, lubricating oil becomes sticky thick even solidifies and make that lubrication weakens, the driving force of high-current equipment driver module reduces, and temperature X is set as to ambient temperature threshold value.
For example, if ambient temperature threshold value is-10 ℃, when ambient temperature is during lower than-10 ℃, now the indices of high-current equipment drive system with higher than-10 ℃, compare that great changes have taken place, comprise: the magnetic resistance of high-current equipment increases, starting torsion increase and starting current increases, the frictional force of reduction gearing increases, the thick lubrication that makes that becomes sticky lubricating oil weakens, the driving force of high-current equipment driver module reduces, metal-oxide-semiconductor or IGBT pipe in driver module is because instantaneous large-current causes encapsulation cannot bear violent variations in temperature and burst etc., if now directly drive high-current equipment forward or reversion, will cause high-current equipment to rotate, immediate current is excessive to be caused metal-oxide-semiconductor or IGBT pipe to burst or burns circuit etc.
Therefore, the present invention uses low pulsewidth PWM heating high-current equipment and high-current equipment driver module, make the temperature of high-current equipment and high-current equipment driver module rise to normal temperature, then the width of widening pwm pulse makes the mild startup of high-current equipment low speed, continues to widen pwm pulse to increase the output torque of high-current equipment when high-current equipment normal operation.
Predefined pwm signal is exactly above-mentioned low pulsewidth PWM, in order to heat high-current equipment and high-current equipment driven MOS pipe or IGBT pipe, the duty ratio of predefined pwm signal is: make the pwm signal duty ratio under the critical condition of high-current equipment in starting.Make operation under the critical condition of high-current equipment in starting can protect the unlikely damage of high-current equipment driver module.
Then, set PWM register, be specially:
When needs high-current equipment forward is moved, set positive rotary-die type PWM register; When needs high-current equipment reversion operation, set reversing mode PWM register.
Pwm pulse is that the pwm pulse generator by microprocessor internal produces, and can adjust by adjusting the register of pwm pulse generator the duty ratio of pwm pulse.
After high-current equipment start-up course finishes, by predefined time span, regularly receive the temperature signal from the second temperature sensor, during high-current equipment operation, the temperature of high-current equipment driver module can raise gradually, when described temperature value is greater than predefined driver module working temperature threshold value, repeatedly increase pwm signal duty ratio, until reach described predefined pwm signal duty ratio maximum.
Setting driver module working temperature threshold value is in order to guarantee that in driver module, electronic devices and components have preferably service behaviour, the Calibration of described driver module working temperature threshold value electronic devices and components in high-current equipment driver module, be specially: if higher than temperature Y, in described driver module, electronic devices and components have good service behaviour, temperature Y are set as to driver module working temperature threshold value.
The peaked establishing method of described pwm signal duty ratio is:
When pulling force set point is less than predefined pulling force threshold value, described pwm signal duty ratio maximum is pwm signal duty ratio corresponding to described pulling force threshold value;
When pulling force set point is more than or equal to predefined pulling force threshold value, described pwm signal duty ratio maximum is 100%;
Described pulling force threshold value is the weight that pulls the object that number of times is maximum.
For example, high-current equipment is the most often used for pulling the object of 500kg left and right, at this moment, can set pulling force threshold value is 500kg, when pwm signal duty ratio is set as to 80%, just can produce the pulling force of 500kg, therefore, if pulling force set point is less than 500kg, now, setting pwm signal duty ratio is 80%, if pulling force set point is greater than 500kg, now, need to set pwm signal duty ratio is 100%, just can produce the pulling force over 500kg.
If apparatus of the present invention are used in helicopter and do not need pulling force set point above crane, or it is just passable to set a value of thrust larger than the actual weight of object that need pull.
Pwm signal duty ratio maximum is the data that test obtains according to reality, for example, according to the size of pulling force set point, set the maximum of pwm signal duty ratio, so both can guarantee that winch can move setting value of thrust to, can not cause winch rotating speed too high because pwm signal duty ratio is too large again, can save electricity consumption.
The described pwm signal duty ratio that repeatedly increases, until reach described predefined pwm signal duty ratio maximum, be in order to guarantee progressively to increase the output torque of high-current equipment, avoid causing because significantly increase pwm pulse suddenly high-current equipment and driver module thereof to damage.
Preferably, the control device of described large electric current further comprises current sensor, for detection of the electric current that flows through high-current equipment, and described current signal is sent to microcontroller; Described current sensor is Hall type current sensor;
Described microcontroller, be further used for before described timing receives the temperature signal from the second temperature sensor, when the electric current from current sensor is greater than 0 and be less than the minimum working current of high-current equipment, or while being greater than the maximum operating currenbt of predefined high-current equipment, close pwm pulse output; When the electric current from current sensor is greater than the minimum working current of high-current equipment and is less than the maximum operating currenbt of predefined high-current equipment, regularly receive the temperature signal from the second temperature sensor.
When high-current equipment turns round, microcontroller detects the electric current that flows through high-current equipment always, when flowing through the electric current of high-current equipment and be greater than the maximum operating currenbt of predefined high-current equipment, stops high-current equipment and reports to the police.The minimum working current of described high-current equipment and maximum operating currenbt are according to the Calibration of high-current equipment.
Preferably, the control device of described large electric current further comprises:
Pulling force sensor, for detection of the value of thrust of high-current equipment, and by pulling force analog signal output to signal condition module;
Signal condition module, is used to pulling force sensor that driving voltage is provided, and amplifies the pulling force analog signal that pulling force sensor sends;
ADC collector, for the pulling force analog signal from the collection of signal condition module is amplified and be converted into digital signal, is sent to microcontroller by described pulling force digital signal and processes for microprocessor analysis; ADC collector is exactly analog to digital converter;
Described microcontroller, be further used for described reach predefined pwm signal duty ratio maximum after, according to the external command judgement receiving, high-current equipment is current in forward, still reverses,
If forward, when the value of thrust of ADC collector transmission is less than pulling force set point, regularly receive the temperature signal from the second temperature sensor, when described temperature value is greater than predefined driver module working temperature threshold value, successively increase current pwm signal duty ratio, until reach predefined pwm signal duty ratio maximum;
If reversion, when reversing time surpasses predefined time span, close pwm pulse output, when reversing time does not surpass predefined time span, regularly receive the temperature signal from the second temperature sensor, when described temperature value is greater than predefined driver module working temperature threshold value, successively increase current pwm signal duty ratio, until reach predefined pwm signal duty ratio maximum.
During reversion, in high-current equipment, there is automatic clutch device, high-current equipment reversion is stopped operating over after predefined time span, high-current equipment is shielded.
Preferably, the control device of described large electric current further comprises input/output module, for sending instruction to microcontroller, receives instruction the output of microcontroller.
Described input/output module can be: button, charactron, indicator light, and/or, radio-frequency (RF) receiving and transmission module, wherein:
Button, for sending unlock command, pulling force set point and high-current equipment forward, reversion instruction to microcontroller; Can manually set value of thrust by button, control high-current equipment forward, reversion etc.;
Charactron, for showing the current value of thrust of microcontroller transmission, state, the pattern of control and the size of pulling force set point that high-current equipment is controlled;
Indicator light can show redness when high-current equipment forward, shows green during reversion;
Radio-frequency (RF) receiving and transmission module, sends pulling force set point and high-current equipment forward, reversion instruction for the mode with long-range, wireless to microcontroller, receives and shows the current value of thrust that microcontroller sends.
Wherein, radio-frequency (RF) receiving and transmission module can be used for the control device of remote wireless control high-current equipment, by host computer or hand-held operate, realizes Wireless remote control.And button, charactron, indicator light can be used for manually controlling the control device of high-current equipment, can, for winding displacement mode, golden finger welding manner or plate are to board connector, equally also can be combined and use a circuit board to carry out layout with control board with the interface of the control board that comprises microcontroller.
Because number of keys is less, so button may be assigned with difference in functionality, the division of keypress function can be carried out according to current running status, for example, after the control device locking of high-current equipment, can set one and separate locking key, a charactron is set switch key, and a numeral increases key, a numeral reduces key, so just can input password pressing after separating locking key, charactron switch key is used for switching cipher and sets position or confirm Password Input, and it is digital that digital increasing-and-decreasing key is used for input; After this control device release, the function of button is also switched, and at this moment can set a power value setting key, a numeral increases key, and a numeral reduces key, by the value of exerting oneself setting key, enter power value set condition, the power value that digital increasing-and-decreasing key is used for increase or reduces to set; After this control device release, the function of button can also be set like this: a stop key, a positive turn key of high-current equipment, a high-current equipment reverse key, press the positive turn key of high-current equipment or reverse key, high-current equipment enters forward or inverted status, presses stop key high-current equipment and stops.
Preferably, described microcontroller, further comprises:
When gathered supply voltage is not within the scope of its normal working voltage, and/or described ambient temperature is within the scope of technical grade chip normal working temperature time, No starting high-current equipment, and output error information.The normal working temperature scope of described technical grade chip is-40 ℃～85 ℃.
As shown in Figure 1, this device comprises the driving device structure of the high-current equipment of the embodiment of the present invention: be controlled by driver module, Power Entry Module and the printing board PCB aluminium base of the high-current equipment control device of the embodiment of the present invention, wherein:
Driver module, for receiving the pwm pulse signal of self-control device, according to the required voltage and current of described pwm pulse signal output high-current equipment.
Described driver module comprises: metal-oxide-semiconductor or IGBT pipe H bridge circuit, H bridge drive circuit, wherein:
H bridge drive circuit, for receiving from the pwm pulse signal of microcontroller and generating metal-oxide-semiconductor or the required pwm pulse signal of IGBT pipe H bridge circuit according to described pwm pulse signal, the charge pump of self inside promotes supply voltage to produce the required high voltage of H bridge upper arm, and metal-oxide-semiconductor or the required instantaneous large-current of IGBT pipe gate pole rising edge are also provided.
Metal-oxide-semiconductor or IGBT pipe H bridge circuit, for controlling the running of high-current equipment according to the pwm pulse signal of H bridge drive circuit output, and provides the high-current equipment required voltage and current that turns round; Metal-oxide-semiconductor or IGBT pipe H bridge circuit provides the high-current equipment required large electric current that turns round, and can go up by difference the rotating of the combination control high-current equipment of underarm, metal-oxide-semiconductor or IGBT pipe H bridge circuit are main high-current equipment power drive parts, are also the parts that caloric value is the most serious.
Power Entry Module, for offering external power source the driver module of high-current equipment and the power management module of described control device.
The driver module of described high-current equipment is attached on PCB aluminium base.
Because metal-oxide-semiconductor or IGBT pipe can produce a large amount of heat when high-current equipment turns round, existing way is to use huge fin, the heat in time metal-oxide-semiconductor or IGBT pipe being produced sheds, and cannot do the miniaturization of auto levelizer, the present invention uses PCB aluminium base, this PCB can be fixed on above the shell of high-current equipment or above fin, by metal-oxide-semiconductor or IGBT pipe, and second temperature sensor be attached on PCB aluminium base, to guarantee that in time the heat that metal-oxide-semiconductor or IGBT pipe are produced sheds, pcb board volume is little, easy for installation, be easy to the shell of high-current equipment integrated, when can reduce the volume of equipment, guarantee that metal-oxide-semiconductor or IGBT pipe can work when large electric current is provided.
Use apparatus of the present invention, can control the high-current equipment that peak current reaches 120A, and use high-power MOS tube or IGBT to manage H bridge circuit in parallel, can export the electric current that 300A is even larger, apparatus of the present invention are used unique PCB aluminium base radiator structure, combine together with high-current equipment, avoided adding the heat abstractor of large volume.
As shown in Figure 2, a kind of control method of high-current equipment, comprises the following steps the method flow of the embodiment of the present invention:
Step 201: in the time of in high-current equipment start-up course, gather outer power voltage, when gathered supply voltage is within the scope of its normal working voltage, and when the temperature that high-current equipment environment of living in detected is less than predefined ambient temperature threshold value, export predefined pulse width modulation (PWM) signal;
Step 202: after high-current equipment start-up course finishes, regularly detect the temperature of high-current equipment driver module, when described temperature value is greater than predefined driver module working temperature threshold value, successively increase the duty ratio of current pwm signal, until reach predefined pwm signal duty ratio maximum.
Preferably, further comprise before regularly detecting the temperature of high-current equipment driver module described in step 202:
The electric current of high-current equipment is flow through in detection, when described electric current is greater than 0 and be less than the minimum working current of high-current equipment operation, or while being greater than the maximum operating currenbt of predefined high-current equipment, closes pwm pulse output; When described electric current is greater than the minimum working current of high-current equipment operation and is less than the maximum operating currenbt of predefined high-current equipment, regularly detect the temperature of high-current equipment driver module.
Preferably, described in step 202, reach predefined pwm signal duty ratio maximum and further comprise afterwards, detect the value of thrust of high-current equipment,
If high-current equipment is current in forward, when described value of thrust is less than pulling force set point, regularly detect the temperature of high-current equipment driver module, when described temperature value is greater than predefined driver module working temperature threshold value, successively increase current pwm signal duty ratio, until reach predefined pwm signal duty ratio maximum;
If high-current equipment is current in reversion, when reversing time surpasses predefined time span, close pwm pulse output, when reversing time does not surpass predefined time span, regularly detect the temperature of high-current equipment driver module, when described temperature value is greater than predefined driver module working temperature threshold value, successively increase current pwm signal duty ratio, until reach predefined pwm signal duty ratio maximum.
Preferably, after gathering outer power voltage described in step 201, further comprise, when described supply voltage is not within the scope of its normal working voltage, and/or described ambient temperature is not within the scope of technical grade chip normal working temperature time, No starting high-current equipment, and output error information.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (1)
1. a control method for high-current equipment, is characterized in that, comprises the following steps:
In the time of in high-current equipment start-up course, gather outer power voltage, when gathered supply voltage is within the scope of its normal working voltage, and the temperature that high-current equipment environment of living in detected is while being less than predefined ambient temperature threshold value, exports predefined pulse width modulation (PWM) signal;
After high-current equipment start-up course finishes, regularly detect the temperature of high-current equipment driver module, when described temperature value is greater than predefined driver module working temperature threshold value, successively increase the duty ratio of current pwm signal, until reach predefined pwm signal duty ratio maximum;
Wherein, before the temperature of described timing detection high-current equipment driver module, further comprise:
The electric current of high-current equipment is flow through in detection, when described electric current is greater than 0 and be less than the minimum working current of high-current equipment operation, or while being greater than the maximum operating currenbt of predefined high-current equipment, closes pwm pulse output; When described electric current is greater than the minimum working current of high-current equipment operation and is less than the maximum operating currenbt of predefined high-current equipment, regularly detect the temperature of high-current equipment driver module;
Described reaching after predefined pwm signal duty ratio maximum further comprises, detects the value of thrust of high-current equipment,
If high-current equipment is current in forward, when described value of thrust is less than pulling force set point, regularly detect the temperature of high-current equipment driver module, when described temperature value is greater than predefined driver module working temperature threshold value, successively increase current pwm signal duty ratio, until reach predefined pwm signal duty ratio maximum;
If high-current equipment is current in reversion, when reversing time surpasses predefined time span, close pwm pulse output, when reversing time does not surpass predefined time span, regularly detect the temperature of high-current equipment driver module, when described temperature value is greater than predefined driver module working temperature threshold value, successively increase current pwm signal duty ratio, until reach predefined pwm signal duty ratio maximum; After described collection outer power voltage, further comprise, when described supply voltage is not within the scope of its normal working voltage, and/or described ambient temperature is within the scope of technical grade chip normal working temperature time, No starting high-current equipment, and output error information.
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| CN201110356119.9A CN102497161B (en) | 2011-11-08 | 2011-11-08 | Driving device, control device and control method for high-current equipment |
| PCT/CN2011/082976 WO2013067722A1 (en) | 2011-11-08 | 2011-11-25 | Drive device, control device and control method for high-current equipment |
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| CN201110356119.9A CN102497161B (en) | 2011-11-08 | 2011-11-08 | Driving device, control device and control method for high-current equipment |
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| CN102497161A (en) | 2012-06-13 |
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