SE8005040L - SPEED SWITCH FOR SMALL ELECTRIC SINGLE ENGINE - Google Patents

SPEED SWITCH FOR SMALL ELECTRIC SINGLE ENGINE

Info

Publication number
SE8005040L
SE8005040L SE8005040A SE8005040A SE8005040L SE 8005040 L SE8005040 L SE 8005040L SE 8005040 A SE8005040 A SE 8005040A SE 8005040 A SE8005040 A SE 8005040A SE 8005040 L SE8005040 L SE 8005040L
Authority
SE
Sweden
Prior art keywords
motor
voltage source
calculator
pulse
computes
Prior art date
Application number
SE8005040A
Other languages
Swedish (sv)
Other versions
SE450443B (en
Inventor
K Uddin
Original Assignee
Eluw Electronic Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eluw Electronic Ab filed Critical Eluw Electronic Ab
Priority to SE8005040A priority Critical patent/SE450443B/en
Publication of SE8005040L publication Critical patent/SE8005040L/en
Publication of SE450443B publication Critical patent/SE450443B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/093—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against increase beyond, or decrease below, a predetermined level of rotational speed

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

The appts. comprises a calculating and alarm circuit which is fitted between the motor voltage source and the motor itself. It has a first pulse calculator controlled by the voltage source frequency, which computes the number of periods in the voltage source. The pulse calculator controls a current adjuster in the motor's supply cable so that it interrupts feed on a regular basis and for short periods within a required time interval. A second such calculator computes the number of induced impulses on the motor feed cable based on the motor's rotation within the above time interval, and activates an alarm circuit when the pulse count exceeds a specific limit. (Provisional Basic advised week E08)
SE8005040A 1980-07-09 1980-07-09 Primary pulse calculator for AC motor rotation surveillance SE450443B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8005040A SE450443B (en) 1980-07-09 1980-07-09 Primary pulse calculator for AC motor rotation surveillance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8005040A SE450443B (en) 1980-07-09 1980-07-09 Primary pulse calculator for AC motor rotation surveillance

Publications (2)

Publication Number Publication Date
SE8005040L true SE8005040L (en) 1982-01-10
SE450443B SE450443B (en) 1987-06-22

Family

ID=20341402

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8005040A SE450443B (en) 1980-07-09 1980-07-09 Primary pulse calculator for AC motor rotation surveillance

Country Status (1)

Country Link
SE (1) SE450443B (en)

Also Published As

Publication number Publication date
SE450443B (en) 1987-06-22

Similar Documents

Publication Publication Date Title
FR2628906B1 (en) DEVICE FOR SHAPING AND EXPLOITING ARMATURE CURRENT Ripples GENERATED BY A DIRECT CURRENT MOTOR, PARTICULARLY FOR POSITIONING CONTROL
GB1123992A (en) Improvements in or relating to motor speed control systems
GB1213885A (en) Electric-motor speed control
JPS5717886A (en) Electronic timer
ES8703353A1 (en) Electronic control device for an assembly, consisting of a diesel engine driving a generator, which feeds an electric motor.
DE3276268D1 (en) Method of reducing the power consumption of a stepping motor, and device for carrying out this method
SE8005040L (en) SPEED SWITCH FOR SMALL ELECTRIC SINGLE ENGINE
JPS52147715A (en) Drive system in stepping motors
FR2441314A1 (en) Electric fence with voltage monitor - discontinues pulses when voltage exceeds given variable threshold
JPS5330720A (en) Positioning control system for pulse motor
GB1512073A (en) Protective systems for switches
JPS547374A (en) Step motor device for electronic watches
FR2298225A1 (en) CONTROL DEVICE FOR THE POWER SUPPLY OF A MOTOR BY CHOPPING A DIRECT CURRENT
JPS5411771A (en) Electronic watch
GB1214914A (en) Improvements in or relating to motor-driven miniature apparatus for connection to differing supply voltages
JPS56110462A (en) Small-sized dc motor having speed detecting signal take out device
FR2350170A1 (en) Numerical positioning of work-table on machine tool - uses pulses from motor counted off with reference to limit switch defining origin of coordinates
ES8505795A1 (en) Generator for vehicle with voltage regulator for a control device.
JPS5765298A (en) Excitation system at time of stoppage of stepping motor
JPS5742877A (en) Electromechanical device
GB1279838A (en) Improvements in or relating to control circuits for d.c. electric motors
SU864313A1 (en) Device for monitoring and registering equipment work
JPS566693A (en) Control lead angle regulation system for commutatorless motor
FR1356238A (en) Device for controlling the speed of an electric motor, in particular of a driving machine motor
JPS5728595A (en) Revolution number controlling system for direct current motor

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 8005040-4

Effective date: 19930204

Format of ref document f/p: F