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| Number | Title | Issue Date |
| 7228943 | Elevator apparatus with position correction for overspeed detection An elevator apparatus has a criterion (overspeed levels) that changes in accordance with an operational condition of a car. The elevator apparatus also has a position information correcting means that corrects an error in value that determines the criterion. In the ... | 06/12/2007 |
| 7152083 | Jerk limited time delay filter The invention includes a method of determining a control input. Such a control input may be used to dictate an input to a system, in order to bring the system from one state to another. In a method according to the invention, a set of values may be determined. The v... | 12/19/2006 |
| 7104363 | Power transmission system for elevator An elevator having a power feeding apparatus effective for reducing the installation space for the elevator is disclosed. The dimension of the power transmission part disposed at the hoist way and the dimension of the power receiving part mounted on the count... | 09/12/2006 |
| 7023153 | Motor control device It is an object of the invention to regulate a control gain without requiring a host controller. In the invention, a command pattern generating section (14) generates a basic operation pattern for operating a motor based on various parameters such as a... | 04/04/2006 |
| 7014014 | Safety device for monitoring a movable element A safety device for monitoring a movable element, in particular, for elevators, is provided. The safety device includes a speed determination unit for determining the speed of the movable element, a comparator device for comparing a predetermined speed with the dete... | 03/21/2006 |
| 7011184 | Increasing traffic handling performance of an elevator system based upon load A method and apparatus for utilizing unused power available in an elevator that is not fully loaded to improve the traffic handling capacity of an elevator system. The present invention can be used to provide an optimized velocity profile for the elevator based on t... | 03/14/2006 |
| 6966408 | Autobalance roping and drive arrangement An autobalancing roping and drive arrangement for elevators which continuously balances the weight of an elevator cab and the weight of a counterweight such that the force on the drive motor necessary to move the cab from floor to floor is minimized. A weighting dev... | 11/22/2005 |
| 6619434 | Method and apparatus for increasing the traffic handling performance of an elevator system A method and apparatus for utilizing unused power available in an elevator that is not fully loaded to improve the traffic handling capacity of an elevator system. The present invention can be used to provide an optimized velocity profile for the elevator... | 09/16/2003 |
| 6333865 | Power supplying device for plural car elevator A power supplying device for a single hoistway, multiple car elevator, preventing the cable of one car from making contact with another car, without the need to increase the size of the hoistway. This power supplying device includes a power supplying memb... | 12/25/2001 |
| 6199667 | Method and apparatus for operating an elevator drive in different performance modes An elevator system for controlling movement of an elevator car coupled to a drive to serve floors in a building in response to hall calls generated from a plurality of hall call devices located at floors served by the elevator car, includes a control for ... | 03/13/2001 |
| 5896950 | Position control method for elevator An improved position control method for an elevator by which the system does not receive any overload even when the speed pattern of the cage is changed while the cage is operated in accordance with the position error occurred. The method includes the ste... | 04/27/1999 |
| 5828014 | Elevator speed control circuit In an elevator speed control circuit that has a proportional and integral speed amp 3 responsive to the deviation between a speed command ω* and actual motor speed ωM, there is provided a car motion feedback circuit that amplifies the differe... | 10/27/1998 |
| 5804779 | Method for generating and scaling velocity profiles for elevator car doors A method for scaling a position versus time profile for elevator car doors includes a step for generating a time scaling factor and a distance scaling factor. The scaling factors allow a previously stored position versus time profile to be used for all su... | 09/08/1998 |
| 5751126 | Lifting appliance with traveling mechanism and low pendulum oscillation during braking An electric drive for the vehicle or traveling mechanism of a lifting appliance contains a control which controls the switching on of the mechanical brake and the switching of the motor current off and on again. In this case, there is provision, in the ev... | 05/12/1998 |
| 5682023 | Time-optimal control of an AC line-driven linear motor elevator door operator A linear motor for operating an elevator door is energized using a bang-bang control strategy (10) wherein three-phase AC utility mains (16) are connected (29) directly to the linear motor primary (14) by means of a motor control (12) in response to contr... | 10/28/1997 |
| 5612517 | Process and apparatus for controlling a hydraulic lift Process and apparatus for controlling a hydraulic lift wherein with this process, a direct approach to a floor can be achieved without requiring a creeping velocity drive, whereby the car is controlled in a position-dependent manner during the deceleratio... | 03/18/1997 |
| 5298695 | Elevator system with varying motion profiles and parameters based on crowd related predictions An elevator system (FIG. 1) employing a microprocessor-based group controller (FIG. 2) communicating with elevator cars (3, 4, . . . ) to affect the assignment of cars to hall calls at a plurality of floors in the building, using different, speedier car m... | 03/29/1994 |
| 5290976 | Automatic selection of different motion profile parameters based on average waiting time An elevator system (FIG. 1) employing a microprocessor-based group controller (FIG. 2) communicating with elevator cars (3,4, . . . ) to affect the assignment of cars to hall calls at a plurality of floors in the building, using different, speedier car mo... | 03/01/1994 |
| 5266757 | Elevator motion profile selection An elevator system including a variable speed motive means is disclosed wherein the motive means is controlled in response to a selected motion profile to effect desired operation of the elevator car. Multiple elevator car motion profiles are stored and a... | 11/30/1993 |
| 5266756 | Control apparatus for hydraulic elevators using fuzzy logic and speed control A control apparatus for hydraulic elevators, including: a flow control valve for controlling the amount of oil in a hydraulic jack; a sensor device for detecting at least one of oil temperature and load pressure and producing corresponding input data; a c... | 11/30/1993 |
| 5241141 | Elevator profile selection based on absence or presence of passengers An elevator system including variable speed motive means is disclosed wherein the motive means is controlled in response to a selected motion profile to effect desired operation of the elevator car. Multiple elevator car motion profiles are stored and dep... | 08/31/1993 |
| 5229558 | Control of an elevator hoisting motor during under voltage conditions in the main power source A method and an apparatus for the control of an elevator a.c. or d.c. hoisting motor driven by a frequency converter unit, or by a rectifier unit, supplied by a three phase power source is disclosed. The voltage of the mains power source is monitored usin... | 07/20/1993 |
| 5073748 | Method for limiting the rate-of-change of acceleration in numerical driving systems A numerically-controlled driving system has a rate-of-change limiter that is applicable to positioning- and continuous-path-control systems as used in robots, machine tools, elevators, etc. When control signals are input, sudden variations in acceleration... | 12/17/1991 |
| 5035301 | Elevator speed dictation system The present invention is directed to an elevator speed dictation system for use in controlling the acceleration and deceleration of an elevator. During the acceleration phase, the speed dictation system of the present invention calculates a dictated accel... | 07/30/1991 |
| 4887695 | Position control method and apparatus for an elevator drive A method and an apparatus for improving the command performance of distance controlled positioning drives, as well as the positioning performance in the region of the destination, responds to different interferences, such as changing load and friction con... | 12/19/1989 |
| 4776434 | Method and apparatus for smoothly stopping an elevator car at a target floor A method and apparatus for smoothly stopping an elevator car at a target floor in an elevator system which utilizes a speed pattern to control car speed via a speed feedback control loop. When the elevator car reaches a predetermined slowdown point relati... | 10/11/1988 |
| 4751984 | Dynamically generated adaptive elevator velocity profile Elevator velocity profile generation is based upon combining an open loop, least time profile for acceleration with a precision closed loop, phase plane control for deceleration. The deceleration phase-plane velocity profile is generated as a modified mir... | 06/21/1988 |
| 4515247 | Elevator system An elevator system which generates a landing speed pattern having the advantages of both digital and analog based patterns, without the disadvantages of either, by generating a landing speed pattern which is a digital, i.e., absolute position, and analog ... | 05/07/1985 |
| 4501344 | Speed pattern generator for an elevator car A method of generating a landing speed pattern which starts with the dynamics of the actual elevator system and the desired actual landing velocity profile curve, and generates a landing speed pattern which will produce the desired actual landing velocity... | 02/26/1985 |
| 4501345 | Elevator system An elevator system, and methods of providing certain functions thereof, wherein an up/down counter provides a count which is used to provide a landing and leveling speed pattern for the elevator car. The counter is preset to a predetermined count prior to... | 02/26/1985 |
| 4470482 | Speed pattern generator for an elevator car A speed pattern generator, and method of generating a speed pattern, for use by an elevator car during a run to a target floor. The speed pattern includes a time based portion and a distance-to-go based portion. Calculations during the time based portion ... | 09/11/1984 |
| 4446946 | Elevator speed instruction generating system An elevator speed instruction generating system using an electronic computer to generate speed instruction data comprises a pulse generator adapted to generate a pulse whenever the cage runs a predetermined distance, a counter for subjecting the pulse thu... | 05/08/1984 |
| 4432439 | Elevator system An elevator system having an elevator car and a drive system for operating the elevator car. The drive system is forced to adaptively appear to have a desired transfer function in response to a speed pattern signal. In one embodiment, the speed pattern si... | 02/21/1984 |
| 4354577 | Speed instruction generating device for elevator A method for controlling the movement of an elevator cage in which a difference between first and second speed instruction values is made constant irrespective of speed so that no shock force is applied to the cage at a time of switching between speed ins... | 10/19/1982 |
| 4331220 | Elevator system An elevator system including an elevator car, and control apparatus for controlling its speed, including a speed pattern generator. The speed pattern generator provides a running speed pattern, and a slowdown speed pattern, wherein the deceleration rate o... | 05/25/1982 |
| 4261439 | Elevator system An elevator system including an elevator car, and control apparatus for controlling the speed of the elevator car, including a speed pattern generator. The speed pattern generator provides a running speed pattern and a slowdown speed pattern, and it force... | 04/14/1981 |
| 4258829 | Elevator system An elevator system having an elevator car operable in the up and down travel directions in a selected one of first and second speed modes. The elevator system develops a bi-directional speed pattern signal from a selected one of first and second unidirect... | 03/31/1981 |
| 4220221 | Method and apparatus for producing a speed pattern for an elevator car or similar vehicle A system for producing a velocity pattern for a vehicle such as an elevator car which must be brought smoothly to a stop accurately aligned with a desired one of a number of stations. The distance between the vehicle and the station at which a stop is req... | 09/02/1980 |
| 4155426 | Digital speed pattern generator A digital speed pattern generator which may have acceleration, constant velocity, and deceleration phases, which is particularly advantageous for short runs in which the constant velocity phase is not reached, as well as for longer runs, such as required ... | 05/22/1979 |
| 4136758 | Speed control system of elevator In a speed control system of elevator, a first speed pattern being an integration of an acceleration pattern and a second speed pattern decreasing at a constant speed for the remaining distance till the stoppage point, are set up. The car is operated in a... | 01/30/1979 |
