Information about Motor Controllers

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About Motor Controllers

Motor controllers receive supply voltages and provide signals to motor drives that are interfaced to motors. They include a power supply, amplifier, user interface, and position control circuitry. Motor controllers are used with several types of motors. Brushed motors commutate with physical contacts. Brushless motors do not. For example, induction motors induce current into the rotor windings without any physical connection to the stator windings. Synchronous motors, no-slip devices that operate at constant speed up to full load, include both reluctance motors and servomotors. Pole changing motors (PCM) use pole number control, a method for changing the number of poles on the primary winding. Vector drive motors provide independent control of both the voltage and frequency. In some designs, encoders or resolvers are used to provide feedback about position and speed. Linear motors generate force in only the direction of travel. Common technologies include moving coil and moving magnet designs. Many types of stepper motors use motor controllers. Examples include full-step motors, half-step motors, mini-motors, micro-motors, unipolar stepper motors, and bipolar stepper motors. Motor controllers are also used in pneumatic and hydraulic motion control systems.

Products & Services Related to Motor Controllers

AC Motor Drives

AC motor drives interface controllers to AC motors. They match the control signals (voltage and power levels) as well as the signal type (analog or digital). They also provide power conversion, amplification, and the sequencing of waveform signals.

DC Motor Drives

DC motor drives act as the interface and power supply between a motion controller and a DC motor.

Motion Control Systems

Motion control systems contain matched components such as controllers, motor drives, motors, encoders, user interfaces and software. Components in these systems are optimally matched by the manufacturer.

Motion Controllers

Motion controllers range from simple linear controllers to complex, user-programmable modules that act as controllers within complex integrated multi-axis motion systems.

Motor Speed Controllers

Motor speed controllers are electronic devices that control motor speed. They carry specifications for drive type, product classification, electrical ratings, and operating parameters.

Servo Drives

Servo drives provide electrical drive outputs to servo motors in closed-loop motion control systems where position feedback and corrective signals optimize position and speed accuracy.

Stepper Motor Drives

Stepper motor drives power unipolar and bipolar stepper motors in full step, half step, and microstep motion control applications.

Engineering Web: Motor Controllers - Machine Design

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Programmable Logic Controller (PLCS) - Servo Control -... reference information about programmable logic controllers ( PLCS), servo control units, motor controllers and many other types of controllers.
Modular motor controllers \| Machine Design Modular motor controllers June 1, 2000
Balance Sensor assembly \| Machine Design Each wheel motor connects to two motor drives and controllers for normal and backup operation.

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