CN202863534U - Electric hydraulic pressure assistance steering system with frequency conversion strategy - Google Patents
Electric hydraulic pressure assistance steering system with frequency conversion strategy Download PDFInfo
- Publication number
- CN202863534U CN202863534U CN 201220499936 CN201220499936U CN202863534U CN 202863534 U CN202863534 U CN 202863534U CN 201220499936 CN201220499936 CN 201220499936 CN 201220499936 U CN201220499936 U CN 201220499936U CN 202863534 U CN202863534 U CN 202863534U
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- steering
- power
- steering system
- electric hydraulic
- assist motor
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Abstract
The utility model relates to an electric hydraulic pressure assistance steering system with a frequency conversion strategy. The electric hydraulic pressure assistance steering system comprises a steering machine, a steering oil pump, a steering oil-way and an assisting motor, wherein a steering plate is used for being connected with the steering machine, the steering oil pump is connected with the assisting motor. The steering oil-way is connected with the steering oil pump and the steering machine through a flexible pipe or a hydraulic pipe. The electric hydraulic pressure assistance steering system further comprises a motor controlling device used for controlling the revolving speed of the assisting motor. Different revolving speeds under different working conditions of the assisting motor are controlled by the motor controlling device according to the size of collected field current of the assisting motor. The power consumption of the electric hydraulic pressure assistance steering system is reduced and the effective utilization rate of vehicle-mounted energy is improved.
Description
Technical field
The utility model relates to vehicle booster and turns to the field, is specifically related to a kind of electric hydraulic power-assisted steering system that adopts the frequency conversion strategy.
Background technology
Electric hydraulic power-assisted steering system is called for short EHPS, is widely used on the new-energy automobile, especially pure electric automobile and deep hybrid power automobile.The servo steering system that current integral new-energy passenger adopts is fixed frequently permanent current formula electric hydraulic power-assisted steering system.Vehicle is in actual operating mode, and the time is in straight-line travelling or fine setting bearing circle state mostly, does not often need power-assisted this moment or only needs very little power-assisted, only just needs larger power-assisted when the big angle rotary bearing circle.If adopt fixed frequently mode of operation to make assist motor be in the full speed operation state, increased the consumption of vehicle-mounted electrical source of power always.
The utility model content
The utility model purpose provides a kind of electric hydraulic power-assisted steering system, in order to reduce the power consumption of electric hydraulic power-assisted steering system, improves the effective rate of utilization of vehicular energy.
For achieving the above object, scheme of the present utility model is: based on the electric hydraulic power-assisted steering system of frequency conversion strategy, comprise steering box, power steerig pump, turn to oil circuit and assist motor, steering box is used for being connected with steering handwheel, power steerig pump connects assist motor, turn to oil circuit to be connected between power steerig pump and the steering box by flexible pipe or hydraulic pipe, also comprise be used to the electric machine controller of controlling described assist motor rotating speed, described electric machine controller comprises for the circuit that gathers exciting current, its dc terminal is used for being connected with vehicle-mounted electrical source of power, it exchanges to hold and is connected with described assist motor, and described assist motor is the three phase variable frequency alternating current dynamo;
This electric hydraulic power-assisted steering system also is provided with the entire car controller that its start and stop of control are communicated by letter with CAN that is used for that is connected with described electric machine controller;
Described vehicle-mounted electrical source of power is super capacitor/lithium cell.
The beneficial effect that the utility model reaches:
(1) is provided with the electric machine controller that is connected with assist motor in the system, the working condition different according to vehicle, electric machine controller
Can work in different rotating speeds according to the size control assist motor of the assist motor exciting current that collects, reduce the power consumption of electric hydraulic power-assisted steering system, improve the effective rate of utilization of vehicular energy;
(2) adopt the frequency-changing AC asynchronous dynamo, reliability is high, and the life-span is long, can adapt to complicated abominable vehicle operating environment.
Description of drawings
Fig. 1 is the utility model electric hydraulic power-assisted steering system structural representation.
The specific embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model electric hydraulic power-assisted steering system comprises steering handwheel 1, steering box 2, turn to oil circuit 3, power steerig pump 4, assist motor 5, electric machine controller 6, entire car controller 7, vehicle-mounted electrical source of power 8, steering box 2 is connected with steering handwheel 1, be used to steering handwheel 1 that power-assisted is provided, assist motor 5 is connected with power steerig pump 4, be used to power steerig pump 4 and whole steering swivel system that power is provided, the electric machine controller dc terminal is connected with vehicle-mounted electrical source of power 8, exchanging end is connected with assist motor, its inside also comprises for the sensor that gathers electric current, the rotating speed that electric machine controller 6 is used for gathering the exciting current size of assist motor 5 and controls assist motor 5, the start and stop of entire car controller 7 control electric machine controllers 6 are communicated by letter with CAN, and vehicle-mounted electrical source of power 8 provides high-voltage DC power supply for car load.
Vehicle maintains a stable scope for the demand of assist torque in motion, the assist torque value is corresponding to the excitation current vector amplitude of assist motor, when vehicle straight-line travelling or fine setting steering handwheel 1, very little to the assist torque demand, the pressure of steering box 2 interior hydraulic oil is less, power steerig pump 4 pump oil pressures maintain a low pressure range, and this moment, the exciting current value of assist motor 5 was low, and 5 frequency reducings of control assist motor slowly ran after electric machine controller 6 detected exciting current; When the needs wide-angle is adjusted steering handwheel 1, large to the assist torque demand, it is large that the pressure of steering box 2 interior hydraulic oil becomes, power steerig pump 4 pump oil pressures maintain a high pressure range, this moment, the exciting current value of assist motor 5 uprised, electric machine controller 6 detects exciting current and becomes large rear fast control assist motor 5 raising frequency high speed rotating, to guarantee good power-assisted ability.Relation between oil pump oil pressure and the assist motor exciting current belongs to prior art, does not repeat them here.
Claims (3)
1. electric hydraulic power-assisted steering system that adopts the frequency conversion strategy, comprise steering box, power steerig pump, turn to oil circuit and assist motor, steering box is used for being connected with steering handwheel, power steerig pump connects assist motor, turn to oil circuit to be connected between power steerig pump and the steering box by flexible pipe or hydraulic pipe, it is characterized in that, comprise be used to the electric machine controller of controlling described assist motor rotating speed, described electric machine controller comprises that described assist motor is the three phase variable frequency alternating current dynamo for the circuit that gathers exciting current.
2. the electric hydraulic power-assisted steering system of employing frequency conversion strategy according to claim 1 is characterized in that, described electric hydraulic power-assisted steering system is provided with the entire car controller that its start and stop of control are communicated by letter with CAN that is used for that is connected with described electric machine controller.
3. the electric hydraulic power-assisted steering system of employing frequency conversion strategy according to claim 1 is characterized in that, described electric machine controller input connects vehicle-mounted electrical source of power, and described vehicle-mounted electrical source of power is super capacitor/lithium cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220499936 CN202863534U (en) | 2012-09-26 | 2012-09-26 | Electric hydraulic pressure assistance steering system with frequency conversion strategy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220499936 CN202863534U (en) | 2012-09-26 | 2012-09-26 | Electric hydraulic pressure assistance steering system with frequency conversion strategy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202863534U true CN202863534U (en) | 2013-04-10 |
Family
ID=48030277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220499936 Expired - Fee Related CN202863534U (en) | 2012-09-26 | 2012-09-26 | Electric hydraulic pressure assistance steering system with frequency conversion strategy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202863534U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104554431A (en) * | 2015-01-06 | 2015-04-29 | 江苏大学 | Energy recovery system of hydraulic power steering system and control method thereof |
-
2012
- 2012-09-26 CN CN 201220499936 patent/CN202863534U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104554431A (en) * | 2015-01-06 | 2015-04-29 | 江苏大学 | Energy recovery system of hydraulic power steering system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20190926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |