A Pulse Width Modulation Control Scheme for Three-Way Catalyst Systems

In this paper shows check the traditional, CPWM (computerized pulse width modulation) regulator combine for control of speed by the automatic group the Brushless dc (BLDC) motor, from these strategies, pursue from CPWM speed control system, the main distinction is in the regulator part. Unique drive framework comprises of a steady Proportional Integrator controller and different has an advanced controller. This paper remembers conversation for the execution of both the strategies and their exhibitions are thought about.

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A Novel Soft Switching Based Fuzzy Logic Control for Single Phase Inverter

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.573.143 ◽

2014 ◽

Vol 573 ◽

pp. 143-149

Author(s):

N. Ismayil Kani ◽

B.V. Manikandan ◽

Prabakar Perciyal

Keyword(s):

Fuzzy Logic ◽

Pulse Width ◽

Pulse Width Modulation ◽

Soft Switching ◽

Switching Frequency ◽

Pwm Inverter ◽

Zero Voltage Switching ◽

Control Scheme ◽

Zero Voltage ◽

Voltage Switching

—This The Pulse Width Modulation (PWM) DC-to-AC inverter has been widely used in many applications due to its circuit simplicity and rugged control scheme. It is however driven by a hard-switching pulse width modulation (PWM) inverter, which has low switching frequency, high switching loss, high electro-magnetic interference (EMI), high acoustic noise and low efficiency, etc. To solve these problems of the hard-switching inverter, many soft-switching inverters have been designed in the past. Unfortunately, high device voltage stress, large dc link voltage ripples, complex control scheme and so on are noticed in the existing soft-switching inverters. This proposed work overcomes the above problems with simple circuit topology and all switches work in zero-voltage switching condition. Comparative analysis between conventional open loop, PI and fuzzy logic based soft switching inverter is also presented and discussed. Keywords—Zero voltage switching, Inverter, Dc link, PI controller, Fuzzy logic system control ,Modulation strategy, Soft switching

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Easy-Riding Compact Electric Shopping Vehicle

Journal of Robotics and Mechatronics ◽

10.20965/jrm.2021.p1178 ◽

2021 ◽

Vol 33 (5) ◽

pp. 1178-1189

Author(s):

Takeharu Hayashi ◽

Yoshihiko Takahashi ◽

Satoru Yamaguchi ◽

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Keyword(s):

Electric Power ◽

Electric Vehicle ◽

Pulse Width ◽

Pulse Width Modulation ◽

Standing Position ◽

Power Source ◽

Sitting Position ◽

Speed Controller ◽

Experimental Vehicle ◽

Modulation Control

We are developing a small compact electric vehicle for shopping purposes. In this study, we fabricated an experimental vehicle, that uses only six small rechargeable AA batteries (7.2 V, approximately 2 A·h) as an electric power source. The vehicle user can select between two driving positions: standing and sitting. A compact transmission with a 90-W DC motor and a speed controller that uses pulse width modulation control was designed as an actuating system. Running experiments were conducted to observe the performance of the fabricated vehicle on a flat floor in a gymnasium. The fabricated vehicle was able to operate for 52 min at a speed of 2.73 km/h. The getting-on and getting-off processes in the vehicle were repeated many times during shopping. The human leg strain while getting on and off the vehicle was investigated by electromyogram measurement. During the getting-on and getting-off processes in the vehicle, the myoelectric potential of the quadriceps increased in the sitting position but did not increase in the standing position. The experimental results show that a user suffers more strain in the sitting position than in the standing position.

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