MOTION CONTROL

BRUSH AND BRUSHLESS MOTORS

Direct Drive DC Brushless and Brush-type Motors

HIGH PERFORMANCE MOTOR COMPONENTS

General Dynamics offers a comprehensive line of DC brushless and brush-type motors designed to meet a wide range of requirements for aerospace and defense platforms such as radar, missile seekers and electro stabilized systems.

Brush Type DC Motors

General Dynamics Ordnance and Tactical Systems’ brush type DC torque motors are engineered for high performance, low-cost, and quick delivery. These motors are tooled and designed for ease of production. High energy product Samarium Cobalt (SmCo) magnets combined with optimum motor windings provide the maximum torque and performance available in a broad range of frame sizes (1.125” – 5.125” OD). In addition to our standard products, we have decades of experience ready to satisfy the most demanding specification with thousands of models from our proven design data base.

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Our experienced team is ready to build a high-quality system solution for your specific application.

Brushless DC Motors

General Dynamics Ordnance and Tactical Systems’ Brushless DC motors have the same electrical performance operating (transfer function) characteristics as brush-commutated DC motors, and can be used in the same applications. They provide high starting torque, variable bi-directional speed operation, and precision position and velocity servo loop capabilities. They can also replace AC motors in spindle and rotary table drives where the higher torque DC motor can drive the spindle directly, eliminating the need for a belt and pulley.

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DC Torque Motor Characteristics

One of the most useful rotating components available to the control system design engineer is the direct-drive DC torque motor. This versatile control element is a permanent-magnet, armature-excited, continuous rotation motor with the following features especially suited to servo system drive and actuation applications:

Characteristics	Benefits
No gear train Direct mounting on the driven shaft High torque at low speeds High torque-to-inertia ratio High torque-to-power Linear torque speed characteristics Low electrical time constant Convenient for factors Simple, rugged construction	High coupling stiffness Fast response Precise positioning High tracking accuracy Excellent stability Low input power Smooth and quiet operation Compact assembly Improved system reliability

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General Dynamics Ordnance and Tactical Systems is a global aerospace and defense company. We are committed to providing the U.S. military and its allies with an extensive range of overarching products that provide a cutting-edge advantage to our war fighters. A General Dynamics Company.