## 1 Introduction  
The mount module is widely used as an anti-vibration device, and several applications are possible with different mechanisms. A passive-type mount is typically a simple structure that is easily installed in mechanical systems and is cost- and maintenance-free [1; 2; 3; 4; 5; 6]. The mechanical properties related to the pass type are deterministic and impossible to revise under operational conditions. Therefore, the original selection of mechanical elements, such as springs and dampers, is critical for maximizing the anti-vibration capacity. An active-type mount module is advantageous for controlling the mechanical properties as much as possible for different operational conditions, or supporting payloads such that optimal vibration control can be achieved using an efficient control strategy [7; 8; 9; 10]. However, the primary concern for the active-type mount is the fail-safe solution or rigorous system identification, including the actuating mount itself [11; 12; 13; 14; 15; 16]. The increasing cost of installation or monitoring systems is another hurdle for popular applications. Recently, the concept of quasi-zero stiffness has been effectively implemented in vibration isolation practices. This approach has been thoroughly explained in a comprehensive review paper [17] that covers a wide range of isolator types, from passive to semi/active solutions. Furthermore, several innovative mount module concepts have been proposed to control the vibrations of supporting systems. Several novel vibration mount concepts have been proposed by numerous researchers. [PERSON] et al. proposed using a thick-walled ring spring for metro superstructures. Accordingly, they attained considerable dynamic response control over the vertical acceleration of three-dimensional structures from the numerical simulation results [18]. [PERSON] et al. examined the dynamic characteristics of a post-buckling silicone gel column in the low-frequency range and verified them experimentally [19]. [PERSON] et al. stated the dynamic characteristics of a post-buckling silicone gel column and then conducted a multi-parameter optimization technique for effective vibration isolation [20]. [PERSON] at el. analyzed a proposed adaptive magnetorheological elastomer-based vibration absorber designed for high-frequency excitations and verified this design with experimental results [21]. [PERSON] at el. proposed precision instrument vibration isolation platforms intended to manage horizontal road vibrations during vehicle operation and validated their accuracy using on-site measurement results [22]. The mechanical structure of a mount module can be formulated using the stiffness and viscous damping coefficients. A mass block can be integrated with a sub-mount in the mount module. A mass block beneath the supporting structure increases the total mass of the basement structure such that the first resonance frequency of the basement decreases to a low-frequency point. A coil spring or other mechanical components, such as a hydraulic or air suspension, can be used to represent the stiffness coefficient, and comparable mechanical devices can be used to produce viscous damping. Alternatively, the viscous damping coefficient can be derived from the high-damping material itself, such as rubber or engineering plastic. Therefore, the mount module can be formulated with several sub-mounts, both spring and damper, and the mass block can be integrated with sub-mounts [23]. This type of mount module is defined as a mass-block integrated mount module (MIMM). An electric power plant manufactured by the DAEHUNG Electric Machinery Company in South Korea was selected as an example for the modeling of a supported system. The electric power plant was set to generate 750 kW, using a V-type 12-cylinder combustion engine, and operate at a rated speed of 1800 rev/min [23]. The configuration of the overall electric power plant is illustrated in Figure 1.  
The primary components of the MIMM consist of three parts: six upper sub-mounts, one mass block, and a lower sub-mount.