Utility model content
The purpose of this utility model is to be directed to technological deficiency existing in the prior art, and provide a kind of detection ac-dc axis electricity
The device of sense.
It is for technical solution used by realization the purpose of this utility model:
A kind of device detecting ac-dc axis inductance, comprising:
Potentiometer, host computer, DC DC power supply, power analyzer, electric machine controller and for fixed tested outer rotor
The fitting device of the outer rotor of motor;
The electric machine controller is connected with host computer, DC DC power supply, potentiometer and tested external rotor electric machine, described
Potentiometer is used to adjust the voltage of the driving signal of electric machine controller output and the amplitude of electric current, and the electric machine controller is according to electricity
Exchange needed for the steady direct current that DC DC power supply provides is converted the tested external rotor electric machine of driving by the instruction of position device drives
Signal, to control starting, operation and the stopping of tested external rotor electric machine;The electric machine controller simultaneously can setting according to host computer
It is fixed, change the frequency of output alternating current drive signal;
The power analyzer is connected with electric machine controller and host computer, to detect the driving of the electric machine controller
Signal voltage amplitude, frequency and current amplitude and wave recording data are transmitted to host computer storage and record and export display.
The fitting device includes the worm-gear speed reducer being mounted in stage support and for fixing external rotor electric
The fixture of the outer rotor of machine;The fixture includes the frame of a U-shape, is installed on two opposite flanks of the frame useful
In the gripping block on the outer circumference surface for being clamped in external rotor electric machine, the gripping block clamps the outer of face and the external rotor electric machine
Shape on periphery be adapted and can positioning card in the groove on the excircle of the external rotor electric machine, the worm and gear
The frame of the output shaft of speed reducer and the fixture, which is connected, adjusts the electricity of the opposite motor of outer rotor to drive the frame to rotate
Magnetic degree.
The gripping block is mounted on screw rod, and the screw rod is mounted in the slot of the frame of U-shape by nut, described
Flexible pad on the clamping face of gripping block.
The worm-gear speed reducer uses hand-rail type structure.
Two phase lines of the external rotor electric machine are shorted or the two-phase of electric machine controller exports same-phase.
The utility model can be used for solving the problems, such as that detection ac-dc axis inductance detection exists and solution in the prior art
Measurement influences the technical issues of motor ac-dc axis inductance variation physical quantity, and when detecting motor inductances parameter, does not generate torque,
Simplify detecting tool.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description is only used to explain the utility model, is not used to limit the utility model.
Referring to shown in Fig. 1-4, a kind of device detecting ac-dc axis inductance, comprising:
Fitting device, electric machine controller, power analyzer, DC DC power supply, potentiometer, host computer;Wherein, DC direct current
Source is connected with the bus of electric machine controller, provides steady direct current source for electric machine controller;Electric machine controller three-phase driving signal
It is connected with external rotor electric machine fixed on fitting device, electric machine controller receives the debugging signal of potentiometer, outer rotor motor
Issue driving signal;Power analyzer is connected with motor control, detect electric machine controller driving signal voltage magnitude, frequency and
Current amplitude, and wave recording data;Power analyzer is connected with host computer, detects that electric machine controller drives by connection handle
Dynamic signal voltage amplitude, frequency and current amplitude are sent to host computer, and host computer records and analyzes driving signal information, and host computer
It is connect with electric machine controller, setting signal can be inputted to realize the frequency for changing electric machine controller output alternating current drive signal.
In the utility model, the power analyzer can show that electric machine controller exports alternating current drive signal, control
AC signal frequency is adjusted, the electric machine controller 2 can be set according to host computer, change the frequency of output alternating current drive signal
Rate.
When work, adjusting potentiometer can adjust the amplitude of voltage and current of electric machine controller output drive signal;Motor
Controller is connected to the motor, and provides electric energy for motor, control motor works in the way of setting.Electric machine controller is according to current potential
The DC conversion that the regulating command of device provides DC DC power supply is alternating current needed for driving tested external rotor electric machine, to control
Starting, operation and the stopping of motor processed;Meanwhile electric machine controller 2 can change output exchange driving letter according to the setting of host computer
Number frequency;The detection information of host computer reception, display and the output of storage power analyzer, and host computer can be passed through and realize tune
The output drive signal frequency of economize on electricity machine controller.
The power analyzer, for driving signal voltage magnitude, frequency and the current amplitude of electric machine controller, record
Wave data, and be transmitted to host computer storage and record and export display.
Shown in referring to figure 2-3, wherein the fitting device includes worm-gear speed reducer 11, stage support 12, folder
Tool 13, worm-gear speed reducer 11, hand-rail type driving accurately to control the mechanical angle of motor outer rotor, and are used to reducing
Revolving speed improves output torque simultaneously;Stage support 12 provides a stable support for integral device;Fixture 13 is by adjusting folder
Have upper and lower position, fixes tested 1 outer rotor position of external rotor electric machine.
Wherein, fixture 13 is connected with external rotor electric machine 1 in fitting device 1, the outer rotor of fixed tested external rotor electric machine 1,
Fixture 13 is connected with worm-gear speed reducer 11, for adjusting relatively tested 7 electromagnetic point of external rotor electric machine of outer rotor.
Specifically, the fixture includes the frame 130 of a U-shape, installed on two opposite flanks 131 of the frame
There are the gripping block 132 on the outer circumference surface for being clamped in external rotor electric machine, the clamping face of the gripping block and the outer rotor
Shape on the outer circumference surface of motor be adapted and can positioning card in the groove on the excircle of the external rotor electric machine, it is described
The output shaft of worm-gear speed reducer is connected with the frame of the fixture to drive the frame rotation opposite to adjust outer rotor
The electromagnetic point of motor.
Specifically, the gripping block is mounted on screw rod 136, the screw rod is installed by two nuts 133 in interior outside
In the slot 135 of the frame of U-shape, the gripping block uses elastic rubber cushion block.
Among fixture, screw rod can horizontally slip to fix external rotor electric the external rotor electric machine in slot
Machine tightens fixation with nut.Interstitial hole 134 axis connection worm-gear speed reducer and fixture on frame rotate worm and gear
The idler wheel of speed reducer fine-tunes external rotor electric machine.
Wherein, two phase lines of the external rotor electric machine are shorted or the two-phase of electric machine controller exports same-phase, this is practical new
Type uses the external rotor electric machine testing ac-dc axis inductance of two phase line same-phases, specific electric machine controller connection principle such as Fig. 4 institute
Show, including power device V1-V6, DC current is changed into the coil of alternating current output external rotor electric machine, realizes control
The operation of external rotor electric machine, including starting, operation and stopping.
The utility model using two phase line same-phases external rotor electric machine testing ac-dc axis inductance when, do not generate torque,
Simplify detection stall tooling, plays an important role to motor production and electric machine control system.Compared with prior art, the utility model
Embodiment can simplify the device of detection motor ac-dc axis inductance, and method is easy, improve detection ac-dc axis inductance efficiency, become electricity
Machine design and electric machines control technology research and development basis.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art
For logical technical staff, without departing from the principle of this utility model, several improvements and modifications can also be made, these change
It also should be regarded as the protection scope of the utility model into retouching.