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1. WO1980002487 - VOLTAGE-TO-FREQUENCY-CONVERTER

Publication Number WO/1980/002487
Publication Date 13.11.1980
International Application No. PCT/US1980/000484
International Filing Date 01.05.1980
IPC
H02P 7/29 2006.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
7Arrangements for regulating or controlling the speed or torque of electric DC motors
06for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
18by master control with auxiliary power
24using discharge tubes or semiconductor devices
28using semiconductor devices
285controlling armature supply only
29using pulse modulation
CPC
B60L 2200/26
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
2200Type of vehicles
26Rail vehicles
H02P 7/29
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
7Arrangements for regulating or controlling the speed or torque of electric DC motors
06for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
18by master control with auxiliary power
24using discharge tubes or semiconductor devices
28using semiconductor devices
285controlling armature supply only
29using pulse modulation
Y02T 10/64
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
10Road transport of goods or passengers
60Other road transportation technologies with climate change mitigation effect
64Electric machine technologies in electromobility
Applicants
Inventors
Priority Data
3535802.05.1979US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) VOLTAGE-TO-FREQUENCY-CONVERTER
(FR) CONVERTISSEUR TENSION-FREQUENCE
Abstract
(EN) Voltage-to-frequency-converter, in response to primary variable analog input signal (Vc), generates one or more trains (C; F) of output pulses. For each train, its frequency vs. primary input signal characteristic is in three ranges or modes, namely an initial range, in which the characteristic is substantially straight line with positive slope, a second range in which the frequency is constant, and a third range in which the characteristic is substantially straight line with negative slope. Derived from the primary input signal (Vc) are first-range (-i1) and third-range (-i3) input signals for an integrator (116) which in their respective ranges subtract from a constant input signal (k). The latter constant input signal (k) is effectively the sole integrator input signal in the second range. A "second" integrator input signal (-i2) is intermittently injected, subtractively, by the pulses of one output pulse train (C). In consequence, the integrator is saturated in second range, but de-saturated in first and second ranges. A bistable threshold detector (125) is continuously in second state in second range, but switches between first and second states in first and third ranges. Logic and latching circuitry generates the output pulses in response to the detector (125) and clock pulses.
(FR) Un convertisseur tension-frequence, en reponse a un premier signal d"entree analogique variable (Vc), produit un ou plusieurs trains (C; F) d"impulsions de sortie. Pour chaque train, sa frequence en fonction de la caracteristique du premier signal d"entree se trouve dans trois gammes ou modes, a savoir une gamme initiale, dans laquelle la caracteristique est sensiblement une ligne droite avec une pente positive, une seconde gamme dans laquelle la frequence est constante, et une troisieme gamme dans laquelle la caracteristique est sensiblement une ligne droite avec une pente negative. Derives du premier signal d"entree (Vc) des signaux d"entree de premiere gamme (-i1) et de troisieme gamme (-i3) pour un integrateur (116) se soustraient dans leurs gammes respectives d"un signal d"entree constant (k). Le dernier signal d"entree constant (k) est effectivement le seul signal d"entree integrateur dans la seconde gamme. Un "second" signal d"entree integrateur (-i2) est injecte de maniere intermittente suivant le mode de soustraction, par les impulsions d"un train d"impulsions de sortie (C). En consequence, l"integrateur est sature dans la seconde gamme, mais non sature dans les premiere et seconde gammes. Un detecteur de seuil bistable (125) se trouve continuellement dans le second etat de la seconde gamme, mais commute entre les premier et second etats dans les premiere et troisieme gammes. Un reseau de circuit logique et de verrouillage produit des impulsions de sortie en reponse au detecteur (125) et des impulsions d"horloge.
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