What are the factors to be considered while selecting a motor?

What are the factors to be considered while selecting a motor?

10 things to consider when choosing an electric motor

1. Vehicle characteristics.
2. Driving cycles.
3. Vehicle configuration (electric, hybrid)
4. Maximal speed.
5. Maximal torque.
6. Maximal power.
7. Battery Capacity.
8. Battery Voltage.

What is the problem faced with stepper motor in robotics?

Stepper motors are not a panacea for robot propulsion. They are heavier, use more power, and have far less torque than traditional DC motors. In addition, they cannot be operated at great rotational speeds and the faster they run, the less torque they have. One needs to be careful in selecting a stepping motor.

What is the main reason to use a stepper motor?

By energizing each phase in sequence, the motor will rotate, one step at a time. With a computer controlled stepping you can achieve very precise positioning and/or speed control. For this reason, stepper motors are the motor of choice for many precision motion control applications.

How do you select a motor for a particular application?

There are several characteristics that you need pay attention to when selecting a motor but voltage, current, torque, and velocity (RPM) are most important. Current is what powers the motor and too much current will damage the motor. For DC motors, operating and stall current are important.

Which motor is best for electric Car?

Brushless DC Motors BLDC motors have traction characteristics like high starting torque, high efficiency around 95-98%, etc. BLDC motors are suitable for high power density design approach. The BLDC motors are the most preferred motors for the electric vehicle application due to its traction characteristics.

What is the main disadvantage of permanent magnet stepper motors?

Some of the top Stepper Motor disadvantages are in that the motors provide a low efficiency. The Stepper Motor draws substantial power (remembering holding torque) regardless of load. When compared to Servo Motors, Stepper Motor are considered to have low accuracy.

Which is more accurate servo or stepper?

To summarize, stepper motors are good solutions for applications with low speed, low acceleration, and low accuracy requirements. Servo motors are a better choice for systems requiring high speed, high acceleration, and high accuracy. The trade-off is a higher cost and complexity.

What are some applications of stepper motor?

Applications of Stepper Motors

• 3D printing equipment.
• Textile machines.
• Printing presses.
• Gaming machines.
• Medical imaging machinery.
• Small robotics.
• CNC milling machines.
• Welding equipment.

How do steppers work?

The stepper motor converts a pulsing electrical current, controlled by a stepper motor driver, into precise one-step movements of this gear-like toothed component around a central shaft. Each of these stepper motor pulses moves the rotor through one precise and fixed increment of a full turn.

Which is the best type of stepper motor?

The two most commonly used types of stepper motors are the permanent magnet and the hybrid types. Generally speaking, the hybrid stepper motor may be the better choice along with reducing cost, as it offers better performance with respect to step resolution, torque and speed. II.

How is the resolution of a stepper motor affected?

The resolution and positioning accuracy of a stepper motor system is affected by several factors－the stepper angle (the stepper motor full-step length), the selected drive mode (full-step, half-step or microstepping), and the gear rate. This means that there are several different combinations which can be used to get the desired resolution.

What is the step angle for a HB stepper motor?

Typical step angle for the HB stepper motor ranges from 3.6° to 0.9° (100 – 400 steps per revolution). The hybrid stepper motor combines the best features of both the PM and VR type stepper motors. The rotor is multi-toothed like the VR motor and contains an axially magnetised concentric magnet around its shaft.

What does static torque mean on a stepper motor?

Static torque is the holding torque when the rated current passed the motor two-phase coil and the rotor does not turn. It also reflects the ability of the stepping motor, which is similar to the “power” of the traditional motor.

What are the important factors to be present in order for a DC motor work?

When selecting a DC motor for a given application, two factors must be taken into consideration: 1) The allowed variation in speed for a given change in load. 2) The allowed variation in torque for a given change in load.

What should be included in the motor selection process?

The motor selection process begins with evaluating the application and ensuring the motor chosen will properly match the needs of the application. Though often overlooked by design engineers, the items on the Application Considerations Checklist (Figure 2) are critical to OEM motor design and a successful overall system solution.

What are the voltage ratios for motor selection?

Motor Selection Procedures – Part One. Both voltages are standard for the particular rating as listed in the above image. The two voltages are in a ratio of either 1:2 or 1:Ã3 (e.g. 230/460, 60 Hz; 2300/4000, 60 Hz; or 220/380, 50 Hz). Single-phase voltage ratios are 1:2 only.

When do you need a 50 Hz motor?

Motors that require 50 and 60 Hz operation of the same motor are non-NEMA defined motors and will be nameplated as such. When this is a motor requirement, it must be specified with the order. All motors are designed to operate successfully with limited voltage and frequency variations.

What is the current relation of a motor?

— Torque, Speed and Current Relation of a motor. The speed at which an induction motor operates is dependent upon the input power frequency and the number of electrical magnetic poles for which the motor is wound. The higher the frequency, the faster the motor runs. The more poles the motor has, the slower it runs.