Abstract:
The present invention is directed to an elevator system. The elevator system comprises a car, a counterweight, at least one belt connecting the car and counterweight, and at least one sheave having a surface that engages with the belt. At least part of the surface of the sheave that interfaces with the belt has a plurality of features for reducing unwanted noise created due to the interaction between the belt and the sheave surface.
Abstract:
An exemplary elevator machine frame includes a plurality of support surfaces configured to support at least one of a motor or a brake. A plurality of arms between the support surfaces maintain a desired alignment of support surfaces. At least one of the arms has a first cross section taken transverse to a longitudinal direction along a length of the arm at a first longitudinal location on the arm. That same arm has a second, different cross section at a second, different longitudinal location on the arm.
Abstract:
A guide assembly (60) for guiding movement of an elevator car (30) is provided including a first (66) and second (68) guide support coupled to the elevator car (30). The first guide support (66) and the second guide support (68) are separated from one another by a gap (G) wider than an adjacent primary portion (42) of a propulsion system (40) of the elevator car (30). A pair of first guides (70) is mounted to the first (66) and second (68) guide support, respectively. The first guides (70) are substantially parallel and are configured to guide movement of the elevator car (30) in a first direction to maintain a clearance between the primary (42) and secondary (44) portions of the propulsion system (40) of the elevator car (30). A second guide (72) is mounted to one of the first (66) and second (68) guide support. The second guide (72) is oriented substantially perpendicular to the first guides (70). The second guide (72) is configured to guide movement of the elevator car (30) in a second direction.
Abstract:
An integrated actuator for damping vibration in a structural member includes an enclosure; a sensor generating a sensor signal in response to vibration in the elevator structural member; a controller in the enclosure, the controller receiving the sensor signal and generating a control signal; and a force actuator in the enclosure, the force actuator generating a force in response to the control signal to reduce the vibration in the structural member.
Abstract:
A system for active control of noise and/or vibration includes an electric machine; at least one sensor for sensing at least one of noise and vibration in the machine and generating at least one of an audio signal representing noise and a vibration signal representing vibration; a controller obtaining at least one of the noise signal and the vibration signal, the controller generating control signals to reduce at least one of noise and vibration in the machine; and power electronics receiving the control signals and generating drive signals for the machine.
Abstract:
A linear propulsion assembly imparts a force upon an elevator car traveling in a hoistway, and includes primary and secondary portions, and an active damper system. The primary portion mounts to one of the car and the hoistway, and includes electric coils. The secondary portion mounts to the other of the car and the hoistway, and includes a rail and magnets engaged to the rail for moving the secondary portion with respect to the primary portion. The damper system contacts the rail for damping rail vibration, and includes a sensor, a controller, a force actuator, and an enclosure. The sensor sends a signal, in response to vibration in the rail, to the controller. The actuator generates a force in response to a control signal from the controller to reduce the vibration in the rail. The controller and the actuator are disposed in the enclosure which is embedded in the rail.
Abstract:
An elevator system may include a stationary support structure defining a hoistway; a car disposed in the hoistway; a linear propulsion assembly (36) for applying a force to the car, the linear propulsion assembly (36) including a first rail (50) engaged to one of the support structure and the car, a plurality of magnets (48) mounted to the first rail (50), a second rail (44) co-extending with and spaced laterally from the first rail (50) and engaged to the other of the support structure and the car, and a plurality of electric coils (42) mounted to the second rail (44); and an active damper system (80) engaged to at least one of the first (50) and second (44) rails for damping vibration. Figure 3
Abstract:
An elevator system may include a stationary support structure defining a hoistway; a car disposed in the hoistway; a linear propulsion assembly (36) for applying a force to the car, the linear propulsion assembly (36) including a first rail (50) engaged to one of the support structure and the car, a plurality of magnets (48) mounted to the first rail (50), a second rail (44) co-extending with and spaced laterally from the first rail (50) and engaged to the other of the support structure and the car, and a plurality of electric coils (42) mounted to the second rail (44); and a leaf damper engaged to at least one of the first (50) and second (44) rails for dissipating vibration. Figure 3
Abstract:
An elevator system may include a stationary support structure defining a hoistway; a car disposed in the hoistway; a linear propulsion assembly (36) for applying a force to the car, the linear propulsion assembly (36) including a first rail (50) engaged to one of the support structure and the car, a plurality of magnets (48) mounted to the first rail (50), a second rail (44) co-extending with and spaced laterally from the first rail (50) and engaged to the other of the support structure and the car, and a plurality of electric coils (42) mounted to the second rail (44); and a leaf damper engaged to at least one of the first (50) and second (44) rails for dissipating vibration. Figure 3
Abstract:
A system for active control of noise and/or vibration includes an electric machine; at least one sensor for sensing at least one of noise and vibration in the machine and generating at least one of an audio signal representing noise and a vibration signal representing vibration; a controller obtaining at least one of the noise signal and the vibration signal, the controller generating control signals to reduce at least one of noise and vibration in the machine; and power electronics receiving the control signals and generating drive signals for the machine.