Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1999-07-09
2000-11-14
LaBalle, Clayton
Electrical generator or motor structure
Dynamoelectric
Linear
273148R, 341 20, H02K 4100, G06F 1700
Patent
active
061474223
ABSTRACT:
A new class of actuators and mechanisms use opposing repulsive magnetic forces. The repulsive forces are typically generated between a stationary magnet and a moving magnet, where the moving magnet is coupled to the mechanism output member. The mechanisms are generally configured such that the repulsive force from one electromagnet is opposed by a repulsive force from another electromagnet, where the opposing forces are simultaneously applied to the mechanism's output member. This configuration is similar in certain aspects to the way biological flexor and extensor muscles are configured in a musculoskeletal system. The opposing configuration allows for open loop control of position and stiffness. The actuator mechanism may have both rotary and linear motion output, and may have either a single degree of freedom or multiple degrees of freedom. Permanent magnets can be used to create a baseline repulsive force without electric power, and electromagnets can modulate the repulsive force magnitude. The actuator can provide high fidelity motion and force output, and is well suited for human interface devices, such as force feedback joysticks. Other applications include adjustable stiffness devices, and high bandwidth mechanisms.
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Delson Nathan J.
Houston John S
Coactive Drive Corporation
Jones Judson H.
LaBalle Clayton
Weissburg Steven J.
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