Abstract An elevator speed control apparatus is disclosed comprising: an ideal velocity generator for generating a velocity ideal for the cage to travel the distance to a floor the cage is to land; a velocity detector for detecting the velocity of the cage in motion; a comparator for comparing the actual cage velocity data supplied from the velocity detector with the ideal velocity data supplied from the ideal velocity generator; an acceleration setting device for setting an acceleration for the cage; an acceleration modifying device operated by the output of the comparator, for modifying the acceleration data supplied from the acceleration modifying device; a command velocity pattern generator for integrating with time the acceleration data supplied from the acceleration modifying device and thus generating a command velocity pattern; and a motor driving device for controlling the cage hoist driving motor according to the command velocity pattern; wherein an ideal cage velocity is maintained by modifying the acceleration data according to the output of the comparator.
An elevator speed control apparatus comprising: an ideal velocity generator for generating a velocity ideal for the cage to travel the distance to a floor the cage is to land; a velocity detector for detecting the velocity of the cage in motion; a comparator for comparing the actual cage velocity data supplied from the velocity detector with the ideal velocity data supplied from the ideal velocity generator; an acceleration setting device for setting an acceleration for the cage; an acceleration modifying device operated by the output of the comparator, for modifying the acceleration data supplied from the acceleration setting device; a command velocity pattern generator for integrating with time the acceleration data supplied from the acceleration modifying device and thus generating a command velocity pattern; and a motor driving device for controlling the cage hoist driving motor according to the command velocity pattern; wherein an ideal cage velocity is maintained by modifying the acceleration data according to the output of the comparator.
Claim 2
Dependent Claim
162 words
An elevator speed control apparatus comprising: an ideal velocity generator for generating a velocity ideal for the cage to travel the distance to a floor the cage is to land; a velocity detector for detecting the velocity of the cage in motion; a comparator for comparing the actual cage velocity data supplied from the velocity detector with the ideal velocity data supplied from the ideal velocity generator; an acceleration setting device for setting an acceleration for the cage; an acceleration modifying device operated by the output of the comparator, for modifying the acceleration data supplied from the acceleration setting device; a command velocity pattern generator for integrating with time the acceleration data supplied from the acceleration modifying device and thus generating a command velocity pattern; and a motor driving device for controlling the cage hoist driving motor according to the command velocity pattern; wherein an ideal cage velocity is maintained by modifying the acceleration data according to the output of the comparator.
Claim 3
Dependent Claim
32 words
The elevator speed control apparatus according to claim 1 wherein said velocity detector detects an actual cage velocity according to the distance traveled by the cage for a given period of time.
Claim 4
Dependent Claim
43 words
The elevator speed control apparatus according to claim 1 wherein said acceleration setting device sets an acceleration for the cage according to an acceleration selection signal supplied from a position computer which selects an acceleration for the cage according to a call generated.
Claim 5
Dependent Claim
88 words
The elevator speed control apparatus according to claim 1 further comprising: a position-velocity converter for generating a velocity pattern corresponding to a position immediately before stopping of the cage; and an automatic gain adjusting device supplied with the output of the position-velocity converter; wherein said gain adjusting device is used whereby the output of the position-velocity converter is automatically caused to match with the level of a command velocity pattern at switching from the output of said command velocity pattern generator to the output of said position-velocity converter.