more than 30 years. • The first ultrasonic motor was introduce by v.v lavrinko in 1965. • An Ultrasonic motor is a type of electric motor formed from the ultrasonic vibration of a component‚ the stator being placed against another‚ the rotor depending on the scheme of operation. • Conversion of electric energy into motion by inverse piezoelectric effect. • To obtain the levels of torque speed characteristics of USM using conventional motors we require to add a gear system to reduce
Premium Electric motor
Ward-Leonard Motor Generation System Introduction: A control system generally controls‚ regulates‚ and updates its output continuously based on present inputs‚ nature of the system‚ and the past outputs. In other words‚ there is a feedback mechanism that is inherent in the system‚ and is called a closed loop control system. For example‚ adding an emitter resistance to a common emitter amplifier‚ results in a negative feedback mechanism in the amplifier system – if the output current increases
Premium Control theory Electric motor Electrical engineering
AC Generators and Motors Course No: E03-008 Credit: 3 PDH A. Bhatia Continuing Education and Development‚ Inc. 9 Greyridge Farm Court Stony Point‚ NY 10980 P: (877) 322-5800 F: (877) 322-4774 info@cedengineering.com CHAPTER 3 ALTERNATING CURRENT GENERATORS LEARNING OBJECTIVES Upon completion of this chapter‚ you will be able to: 1. Describe the principle of magnetic induction as it applies to ac generators. 2. Describe the differences between the two basic types of ac generators. 3. List the
Premium Electric motor
Scientists 2009 Vol II IMECS 2009‚ March 18 - 20‚ 2009‚ Hong Kong Comparison between Direct-On-Line‚ Star-Delta and Auto-transformer Induction Motor Starting Method in terms of Power Quality H.H. Goh‚ M.S. Looi‚ and B.C. Kok Abstract—This paper presents a comparison between the Direct-On-Line (D.O.L.)‚ Star-Delta‚ and Auto-transformer induction motor starting method in terms of power quality. The purpose of this research is to find out the most reliable and practical starting method which has
Premium Electric motor Electrical engineering Transformer
Riordan Electric Fan Proposal Riordan Electric Fan Proposal Olla S. Bartlett‚ Darjae Johnson‚ Thomas Williams University of Phoenix OPS/571 22 March 2012 Mahesh Singh Riordan Electric Fan Proposal Riordan Manufacturing manufactures many different plastic items ranging the gambit from medical devices‚ to bottles to electric fans. In the last year the Hangzhou plant has averaged 93% in its on-time deliveries (Apollo Group Inc.‚ 2012). This proposal package will detail
Premium Electric motor Lean manufacturing
SERVO MOTOR SYSTEM YED TEPE UNIVERSITY DEPARTMENT OF MECHANICAL ENGINEERING YEDITEPE UNIVERSITY ENGINEERING FACULTY MECHANICAL ENGINEERING LABORATORY Servo Motor System 1. Objective: Introduce the students to control the speed of a servo motor system. To test the motor in the directions of rotation with the functions of the speed control. To conduct a reference move on a servo system. 2. Equipment: Festo Equipment Set TP 801: Basics of servo motor drive technology‚ including Roller
Premium Control theory Electric motor
Describe the main features of a DC electric motor and the role of each feature Part | Description | Role | Magnet(s) | Either permanent or electromagnetic. Induce a magnetic field and fit around the armature. | The magnets supply the magnetic field which interacts with the current in the armature to produce the motor effect. | Armature | The armature consists of a cylinder of laminated iron mounted on an axle. Often there are longitudinal grooves into which the coils are wound. | The armature
Premium Electric motor Magnetic field Electromagnetism
supply was dc‚ dc motors were used extensively to draw power direct from the dc source. The motor speed could be varied by adjusting field current by a rheostat. That was an open loop control. Most of the drives were constant speed and the characteristics could not be matched with a job requirement. A vast development in the dc drives system took place when the ward Leonard Control System was introduced in the 1980s. The system was motor-generator system to deliver power to the drive motor. The supply
Premium Electric motor
1. Introduction In the following report‚ the sales department will be analysed by me of the company ’Rotary Electro Motors B.V.’ with respect to what can be improved looking at their weaknesses. The company itself belongs to the biggest electronic motor producers in the Netherlands with a turnover of more than 132‚500‚000. Seeing this you would think that they could not have done too many mistakes. However‚ you should keep in mind that there are always certain risks a company will face over the
Premium Electric motor Invoice Audit
DOMINION MOTORS AND CONTROLS‚ LTD. Case Facts: Dominion Motors and Controls‚ Ltd. (DMC) was a company producing motors of varying horsepower (hp) and other accessories for motors like motor control and panel-board units DMC was facing a threat of loss of market share owing to some tests by Hamilton Oil Company – the largest Canadian oil company The results of these tests were not yet reported‚ but they were rumoured to make the complete motor market incorporate some serious changes in the design
Premium Electric motor Costs Variable cost