 Gas dynamic pressure bearing apparatus |
| Therefore, a first object of the present invention is to provide a gas dynamic pressure bearing ... |
|
| Resisting and pulling mechanism |
| The primary objective of the present invention is to provide a resisting and pulling mechanism ... |
|
| Triggered ignition system for internal combustion engines with anti-reverserunning control |
| We claim: 1. A signal generator generating a signal proportional to speed, comprising a rotor ... |
|
| Engine housing for an engine-device assembly |
| A unique engine housing for a vertical shaft engine is provided that enables a standard generator ... |
|
| Vertical generator assembly |
| I claim: 1. A vertical generator assembly comprising: an engine including an engine housing and a ... |
|
| Solder-bonding structure and brushless motor having the same |
| The present invention addresses the above disadvantages. Thus, it is an objective of the present ... |
|
| Magnetic loops closure elements for electric motor |
| I claim: 1. An electric motor including a stator having a plurality of radially extending ... |
|
| Squirrel cage rotor for a high-speed electrical machine with defined pressing surface disks |
| The object of the invention is therefore to specify a rotor for a high-speed electrical machine, ... |
|
| Scroll type fluid displacement apparatus with surface treated spiral element |
| It is a primary object of this invention to provide an improved scroll type fluid displacement ... |
|
| Bearing assembly with electric power generator |
| In view of the foregoing, the present invention is intended to provide a bearing assembly having an ... |
|
|
Motor control mounting
| Details |
Inventors: von der Heide, Johann; Papst, Georg F.; Mueller, Rolf;
Assignee: Papst-Motoren GmbH & Co. KG (Black Forest, DE)
Primary Examiner: Salce; Patrick R.
Assistant Examiner: Rebsch; D. L.
Attorney, Agent or Firm: Fitch, Even, Tabin & Flannery
To lessen mounting time and to optimize positioning of the Hall generator, the Hall generator and control electronics influenced by the generator so as to actuate a brushless dc motor are arranged on a common substrate and are provided with a common protective envelope whose dimensions are somewhat narrower than the cross-section of the motor slot. This substrate is inserted in the motor slot so that the Hall generator is located outside the slot and in the effective magnetic field of the motor's permanent magnet. |
|
DETAILED DESCRIPTION What is claimed is: 1.
A brushless d.
c.
motor having a rotor with a magnetic field, a stator, slots in the stator having a given width and cross section, a winding system held in the cross section of the slots of the stator, electronic controls controlling current in the winding system and a Hall device detecting the position of the rotor and providing a control signal for the electronic controls to regulate the motor, the motor further comprising an elongated substrate mounting both the Hall device and the associated electronic controls; an envelope enclosing in common the substrate, the Hall device, and the electronic controls, the width of the combined envelope and substrate being less than the given width of the cross section of the slots, the Hall device being mounted on the elongated substrate adjacent one of its ends, and the combination envelope with substrate, Hall device and electronic controls being disposed within the cross-sectional area of one of the motor slots and with the Hall device end extending outside the slot but within the magnetic field of the rotor, whereby the Hall device is able to provide an effective control signal substantially interference free in response to the magnetic field of the rotor.
2.
A motor in accordance with claim 1 further comprising power leads to the motor being firmly connected to the control electronics from the end of the elongated substrate opposite the Hall device end, the connections being on the substrate within the slot and within the enclosure of the envelope.
3.
A motor in accordance with claim 1 further comprising a frame for containing the combination substrate, Hall device, electronic controls and envelope, and means physically connecting the frame to the substrate.
4.
A motor in accordance with claim 2 further comprising a frame for containing the combination substrate, Hall device, electronic controls, motor leads connections and envelope, and means physically connecting the frame to the substrate.
Description:
MOTOR CONTROL The present invention concerns a brushless dc motor provided with electronic controls influenced by a Hall generator
|
| Related patents |
|
|
Interconnecting ring and wire guide
An interconnecting ring and wire guide according to the present invention for an electric machine includes an annular radial ring having a radially inner edge and a ...
|
|
|
Electromotor
I claim: 1. An electromotor comprising a rotor part and a stator part, which parts are formed into a bearing system by means of oil-containing spiral groove bearings, ...
|
|
|
Pneumatic and magnetic bearing type motor
In view of the foregoing, an object of the present invention is to provide a pneumatic and magnetic bearing type motor simple in construction in which, during rotation, ...
|
|
|
Labyrinth seal system
A labyrinth seal system of the present invention significantly prevents lubricant escaping the motor. A motor incorporating the labyrinth seal system includes at least ...
|
|
|
Rotation shaft support structure of motor
The primary objective of the present invention is to provide a rotation shaft support structure of a motor, wherein the rotation shaft of a rotor of the motor has an end ...
|
|
|
Motor
The present invention has been made in view of the above-noted circumstances and an object thereof is to provide a motor which can be constructed super-compactly so that ...
|
|
|
Spaceblock deflector for increased electric generator endwinding cooling
The invention provides a structure and method for enhancing cooling of the generator rotor by directing coolant flow towards the center of the cavities defined by and ...
|
|
|
Pulse-width modulation speed controllable DC brushless cooling fan
The main object of the present invention is directed to provide a cooling fan of a circuit system which occupies the same size of space as that of the conventional fixed ...
|
|
|
Rotation detecting device with magnet brake
It is an object of the present invention to provide a rotation detecting device which can apply a stable and proper braking torque to the rotor and reduce an amount of ...
|
|
|
Drive system
The object according to the present invention is, therefore, to design a generic drive system in such a way that, when relative movements between the rotor arrangement ...
|
|
|
Generators or Motors 
