Modified Mechanical Structure Electric Bike Design Computation and Prototype Model Implementation

The aim of this paper is to investigate the design computation and prototype model implementation of a Modified Mechanical Structure (MMS) Electric Bike (E-Bike). It is the technology that allows the vehicle to operate with the assistance of electrical energy. All conventional cars will be converted to electric vehicles (EVs) in the future. EVs will be affordable to all types of people, allowing them to fly comfortably and safely. As a result, this paper proposes a design estimate and model implementation of the MMS E-Bike with the smallest number of parts, lowest expense, and lightest weight possible. The most important parts of the designed MMS E-Bike are the battery, MMS, BLDC motor, and electronic commutator with their controller. Because of its adapted mechanical frame nature, the designed E-Bike is low in cost and weight, and it can also go up to 25 kmph. Furthermore, the rider will be able to ride the built MMS E-Bike without any pain to their bodies and should be able to sit comfortably during their journey. In comparison to the Ampere Angel and DMW Electra 20 E-Bikes, the performance of the developed model is tested under various operating conditions, as well as their battery backup.

Simplified and Precise Design of Crossflow Turbine Power Transmission Components

Despite the merits of small hydropower (SHP), coupled with the perennial inadequate and unreliable electricity supply in SSA, the huge SHP potential in the region is hugely untapped. This is largely attributed to the lack of adequate technical components for the development of SHP turbines, which are: technical personnel, and production facilities in the region. The hydraulic power possessed by flowing water in SHP resources can be harnessed and transformed into usable electrical energy via the deployment of a hydro turbine plant. Commonly used hydro turbines include crossflow (CFT), Pelton, Turgo, and Francis turbines. Amongst these turbines, CFT is mostly applied in low head sites and has efficiency ranging from 70–85%. The CFT power transmission subsystem is considered vital to its performance; the shaft, which transmits the generated motion to drive the alternator, is the most critical part of the CFT transmission subsystem and it requires careful design and production processes. This study centres on the development of a simplified systematic design process for power transmission shaft, pulley, and belt, to facilitate CFT power generation efficiency. .Further, the study is geared towards boosting CFT technology capacity domestically for the benefit of local production. The hydrological properties of the Ayiba SHP site in Osun state, Nigeria, were adopted for this work as a case study. The head and power for this resource are 11.8 m and 122.4 kW, respectively, and are served as the fundamental parameters for the design of the power transmission subsystem. The design computation shows that a shaft of diameter 65 mm and a D-type of V-belt with a corresponding pulley will be required to transmit the generated turbine power to the alternator. A 3-D model was created based on the design values and this was used to validate the integrity of the shaft by static stimulation. The simulation result, which is based on von Mises was satisfactory as the highest stress obtained in the shaft was 205 N/mm2; resulting in a 2.6 factor of safety.

Real design practice, real design computation

The business model of architecture has been accused of being technologically deficient. Through case studies, this paper investigates alternatives to the status quo of computation in architecture, with a focus on design-oriented service providers. It first examines the discourse on computation within the field, then describes the experiments of a relevant design firm before discussing implications for the wider industry. In the process, the paper articulates the gap between theoretical computing applications and the realities of the architecture business. It addresses difficult technological adaptations within the industry with concrete use cases of integrated computing expertise, highlighting opportunities, benefits, and, more importantly, the need for a computational workforce.

Approximate Reverse Carry Propagate Adder for Energy-Efficiency

The hypothesis of estimated measure is to design computation quality for computation efforts. The Approximate full adders (AFA’s) are the lead objective to reduce the length of carry propagation which is put through to the slightest error rate. Approximate adder comes up with important enhancement in delay, area and power. The developing attribute is carry doesn't propagate in it. So in this we mainly use the hybrid adders where it utilizes the RCPFA. The approximate adder generates the input carry from higher bit to lower bit to produce carry output, , the weight of the carry reduces when it generates. In Reverse Carry Propagate Adder there are accomplishments to be completed those are the power, delay and energy. So, compared to the conventional ones the Approximate Mirror Adders (AMA's) has less transistors compared to it. This is to establish on the internal structure of the mirror adder which consumes less area and power consumption as well as higher speed. The representation performed by the RCPFA and hybrid adders is observed and compared using Mentor Graphics. As a result, it consists of higher accuracies and specifies that, by working on the RCPFA in the hybrid adders can consists of improved consumption of area by 14%, consumption of power by 19.2%, consumption of delay by 27%