An elevator system includes an elevator car supported by an elevator rope wrapped around a sheave, such that a rotation of the sheave changes a length of the elevator rope between the sheave and the elevator car thereby controlling a movement of the elevator car within an elevator shaft of the elevator system. An elevator cable is connected to the elevator car and the elevator shaft to carry electrical signals to the elevator car. The operation of the elevator system is controlled in response to receiving a call for a movement of the elevator car requesting a change of the length of the elevator rope. A motion profile of the elevator car causing the requested change of the length of the elevator rope that minimizes the sway of the cable is determined according to a model of a cable relating a sway of the cable to a motion profile. Next, the motion of the elevator car is controlled according to the determined motion profile.

Methods and systems to control an elevator door of an elevator car that can be moved between floors of a building. At least one registered destination call is evaluated, which makes it possible to plan the number of boarding or exiting passengers for each stopping floor. For each stopping floor, a corresponding door dwell time for the elevator door is determined to make it possible for a registered passenger to board or exit on a stopping floor. The number of passengers that exit the elevator car on the stopping floor and the number of passengers that board the elevator car on the stopping floor is also determined. The elevator door is closed regardless of the set door dwell time if the number of passengers boarding and exiting on the stopping floor determined by the sensor system corresponds to the number of boarding or exiting passengers planned for the stopping floor.

According to an aspect, there is provided an elevator system comprising an elevator control apparatus configured to operate elevator cars in two parallel vertical trajectories, wherein the elevator cars are configured to move in a closed loop up along a first vertical trajectory and down along a second vertical trajectory, The first vertical trajectory and the second vertical trajectory are at least partly shared by a first group of elevator cars and a second group of elevators cars, wherein the first group and the second group at least partly are configured to operate at different maximum speeds.

Systems and Methods for controlling a movement of cars of an elevator system. A processor determines for each car an individual waiting time of each hall call. Determines for each pair of hall calls assigned for each car, a pairwise delay over the individual waiting time of each hall call in the pair caused by a joint assignment of the car to the pair of the hall calls. Approximate a cumulative waiting time of an assignment of the cars to the hall calls as a sum of individual waiting times for each hall call with the assigned car and a sum of all pairwise delays determined between all pairs of hall calls assigned to the same car. Determine the assignment of the cars using a greedy optimization algorithm that greedily assigns hall calls to the cars to minimize the approximated cumulative waiting time, and control the movement of the cars.

The invention relates to an elevator comprising an electric linear motor comprising at least one linear stator designed to be located in a fixed correlation to an environment, particularly building, and at least one mover designed for connection with an elevator car to be moved and co-acting with the stator to move the car, which motor comprises a stator beam supporting said at least one stator, which stator beam has at least one side face carrying ferromagnetic poles of said stator spaced apart by a pitch, and which mover comprises at least one counter-face facing said side face(s) of the stator beam, in which counter-face electro-magnetic components of the mover are arranged to co-act with the ferromagnetic poles mounted on the stator beam, which elevator comprises an elevator brake. According to the invention the side face of the stator beam facing the mover and/or the counter face of the mover facing the side face of the stator beam comprise(s) a brake surface which form(s) the brake interface of the elevator brake.

A control unit, an elevator-monitoring apparatus and a method are used to monitor a maintenance mode of an elevator installation. The control unit has a controller and a memory device, wherein the controller receives a first signal when a locking device of shaft door is locked and receives a second signal when the locking device is unlocked. The controller compares a chronological signal sequence of first signals and second signals with a reference sequence stored in the memory device for actuation of the locking device and, if the signal sequence of the first signals and second signals matches the reference sequence, ends the maintenance mode and releases a car of the elevator installation for a traveling operation.

The present invention relates to a method for controlling an operation of an elevator, which is capable of moving the elevator to a near floor by using an auxiliary power supply such as a battery in an emergency situation where a commercial power supply cannot be used, while minimizing power consumption through automatic control. The method includes: detecting the current operation zone of the elevator when an auxiliary power supply driving situation occurs; and operating the elevator by using the auxiliary power supply to correspond to the detected current operation zone. The detected current operation zone corresponds to one of an acceleration zone, a constant speed zone, a creep zone and a seating zone.

The invention relates to a method and arrangement for creating a safe working space in the upper part of an elevator shaft. The solution comprises a number of safety levels with pre-defined clearances and triggering limits for safety operations in order to create a safety space zone at the upper part of the elevator shaft by stopping the upwards movement of the elevator car, when the elevator is in the inspection or maintenance mode, with actions which are arranged to become more and more effective and definitive safety level by safety level.

An elevator automatic rescue and energy-saving control method, the method comprising: when the power grid supplies power normally, selecting a single current in a three-phase power grid (9) as an AC power supply for an elevator control system (10); controlling a DC-DC converter (2) to charge the super capacitor module (1) connected to the DC-DC converter to a specified standby electric energy level; and when the power grid is suddenly interrupted, selecting to use the electric energy stored in the super capacitor module (1) as a rescue electric energy for a traction motor (7) and the elevator control system (10). The described method uses a super capacitor module, so that a stable and reliable elevator rescue power supply is provided when the power grid is suddenly interrupted, and the regenerative electric energy dissipated during elevator braking operation is stored and utilized during elevator operation, thereby conserving energy.

An elevator drive system (40) includes a permanent magnet (PM) synchronous electric motor (34) including a plurality of phases and a plurality of motor drives (55, 58) electrically connected to the PM synchronous electric motor. Each of the plurality of motor drives is operatively connected to a corresponding one of the plurality of phases. The plurality of motor drives is configured and disposed to deliver a torque current divided equally between each of the plurality of phases and independently deliver flux current to the corresponding one of the plurality of phases.